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Testicular volume (TV) is considered a good clinical marker of hormonal and spermatogenic function. Accurate reference values for TV measures in infertile and fertile men are lacking. We aimed to assess references values for TV in white-European infertile men and fertile controls. We analyzed clinical and laboratory data from 1940 (95.0%) infertile men and 102 (5.0%) fertile controls. Groups were matched by age using propensity score weighting. TV was assessed using a Prader orchidometer (PO). Circulating hormones and semen parameters were investigated in every male. Descriptive statistics, Spearman's correlation, and logistic regression models tested potential associations between PO-estimated TV values and clinical variables. Receiver operating characteristic (ROC) curves were used to find TV value cutoffs for oligoasthenoteratozoospermia (OAT) and nonobstructive azoospermia (NOA) status in infertile men. The median testicular volume was smaller in infertile than that of fertile men (15.0 ml vs 22.5 ml; P < 0.001). TV positively correlated with total testosterone, sperm concentration, and progressive sperm motility (all P ≤ 0.001) in infertile men. At multivariable logistic regression analysis, infertile status (P < 0.001) and the presence of left varicocele (P < 0.001) were associated with TV < 15 ml. Testicular volume thresholds of 15 ml and 12 ml had a good predictive ability for detecting OAT and NOA status, respectively. In conclusion, infertile men have smaller testicular volume than fertile controls. TV positively correlated with total testosterone, sperm concentration, and progressive motility in infertile men, which was not the case in the age-matched fertile counterparts.

Background: Scrotal color Doppler ultrasound (CDUS) still suffers from lack of standardization. Hence, the European Academy of Andrology (EAA) has promoted a multicenter study to assess the CDUS characteristics of healthy fertile men (HFM) to obtain normative parameters. Objectives: To report and discuss the scrotal organs CDUS reference ranges and characteristics in HFM and their associations with clinical, seminal, and biochemical parameters. Methods: A cohort of 248 HFM (35.3 +/- 5.9years) was studied, evaluating, on the same day, clinical, biochemical, seminal, and scrotal CDUS following Standard Operating Procedures. Results: The CDUS reference range and characteristics of the scrotal organs of HFM are reported here. CDUS showed a higher accuracy than physical examination in detecting scrotal abnormalities. Prader orchidometer (PO)- and US-measured testicular volume (TV) were closely related. The US-assessed TV with the ellipsoid formula showed the best correlation with the PO-TV. The mean TV of HFM was similar to 17 ml. The lowest reference limit for right and left testis was 12 and 11 ml, thresholds defining testicular hypotrophy. The highest reference limit for epididymal head, tail, and vas deferens was 12, 6, and 4.5 mm, respectively. Mean TV was associated positively with sperm concentration and total count and negatively with gonadotropins levels and pulse pressure. Subjects with testicular inhomogeneity or calcifications showed lower sperm vitality and concentration, respectively, than the rest of the sample. Sperm normal morphology and progressive motility were positively associated with epididymal head size/vascularization and vas deferens size, respectively. Increased epididymis and vas deferens sizes were associated with MAR test positivity. Decreased epididymal tail homogeneity/vascularization were positively associated with waistline, which was negatively associated with intratesticular vascularization. CDUS varicocele was detected in 37.2% of men and was not associated with seminal or hormonal parameters. Scrotal CDUS parameters were not associated with time to pregnancy, number of children, history of miscarriage. Conclusions: The present findings will help in better understanding male infertility pathophysiology, improving its management.

Objectives To investigate the prevalence of testicular microlithiasis and the relationship between testicular microlithiasis, semen parameters and endocrinological profiles in healthy newlywed men trying for first-time pregnancy. Methods Men visiting Juntendo University Urayasu Hospital, Urayasu, Chiba, Japan, or D Clinic Tokyo, Chiyoda-ku, Tokyo, Japan, for a first-time examination of fertility underwent scrotal examination, semen analysis and blood tests. Testicular volume measured by orchidometer, semen parameters measured by the Makler counting chamber and endocrinological profiles were compared between men with testicular microlithiasis and without testicular microlithiasis. The correlation between sperm concentration and the number of calcifications, and sperm motility and the number of calcifications, were investigated. Results Of 739 men, 60 (8.1%) were diagnosed as having testicular microlithiasis. Among them, testicular volume, semen volume and motility were lower than those in the men without testicular microlithiasis. Luteinizing hormone and follicle-stimulating hormone levels were higher in those with than those without testicular microlithiasis. The sperm concentration correlated negatively with the number of calcifications. There was no significant correlation between sperm motility and the number of calcifications. Conclusion Herein, we report the prevalence of testicular microlithiasis in healthy newlywed men. Furthermore, our findings suggest that semen parameters in men with severe testicular microlithiasis tend to be worse.

BackgroundPuberty is the period of human growth and development. To determine the onset of puberty with regards to the effect of higher adiposity, together with growth parameters of the participants at various stages of sexual maturity for both sexes.MethodsThe study was conducted on 1944 children (8–16) years; 1022 girls (52.6%) and 922 boys (47.4%) were taken at random. Pubertal assessment was done using Tanner staging that assigned breast development in females and pubic and axillary hair in males and females. Testicular volume was recorded using a Prader orchidometer. Height, weight, body mass index (BMI), body mass (BM) fat, body fat percentage, through applying a body impedance analyzer, and others were recorded.ResultsThe mean ages at the onset of puberty for females and males in our study were 10.29 ± 1.1 and 11.34 ± 1.02 years, respectively. Pubic hair (stage PH2) was attained at mean age of 10.72 ± 0.84 and 11.98 ± 1.03 years for females and males, respectively. For axillary hair (stage AH2), the mean age was 12.47 ± 0.68 years for females and 13.8 ± 0.58 years for males. The mean age at menarche was 12.41 ± 0.65 years. In concordance to BM fat and percentage, all pubertal stages started earlier in females with BMI ≥85th percentile comparable to females within average BMI. As for males, no significant relation was noted between mean pubertal ages and BMI values.ConclusionsA significant association of mean ages of Tanner stages to excess weight especially in females warranted the increasing awareness about health care, nutritional aspects, and living circumstances.

The aim of this study was to determine whether testicular volume is correlated with clinical and biochemical markers of hypothalamic–pituitary–testicular (HPT) axis function. This was a cross-sectional substudy of a larger randomized controlled trial including obese men, body mass index (BMI) ≥30 kg m−2, with a total testosterone level

Context Pubertal timing in boys is associated with body mass index (BMI). Studies consistently report an inverse correlation of BMI and pubertal timing within the normal BMI range. However, observations in obese boys are conflicting with different studies reporting either early or delayed pubertal onset in obese boys. Objective We aimed to assess the association of male pubertal timing with age-specific BMI (zBMI) in obese boys. Design, Setting, and Participants A total of 218 obese boys (zBMI > +2SD, with a median age at baseline of 10.8 years (range 4.2–17.0), were recruited as part of a prospective outpatient childhood obesity intervention program at Nordsjællands Hospital, Hillerød, Denmark, between 2009 and 2017. Serving as controls, we included 660 healthy boys participating in the population-based COPENHAGEN Puberty Study (-2SD < zBMI ≤ +2SD, 2006–2014). Subanalyses were performed on overweight controls (+1SD < zBMI ≤ +2SD). The clinical assessment of pubertal development by Tanner staging, including testis volume using a Prader’s orchidometer, was performed by trained physicians. The timing of pubertal milestones was estimated by probit analyses. Main Outcome Measures Timing of testicular volume ≥ 4 mL, genital stage ≥ 2, and pubarche. Results The mean (95% confidence interval [CI]) age of onset of pubertal event in obese boys was as follows: testicular volume ≥ 4 mL, 11.3 years (11.0–11.6); genital stage ≥ 2, 11.6 yrs (11.3–11.9); and pubarche, 11.9 years (11.5–12.3). Testicular volume ≥ 4 mL occurred significantly earlier in obese boys compared to controls (-2SD < zBMI ≤ +2SD) (P = 0.01). We did not observe significant differences for either the timing of pubarche nor the genital stage ≥ 2 (P = 0.06 and P = 0.94, respectively) Conclusions We demonstrate that testicular enlargement in obese boys occurs significantly earlier compared to a population-based normal-weight reference cohort.

Background: The most important changes during puberty are secondary sexual characters. Objective: The objective of this study was to find out the mean testicular volume (MTV) by Prader orchidometer at different stages of pubertal development. Materials and Methods: Children between 10 and 18 years of age (sample size 525) from schools of Udaipur city were included in the study. Children, who underwent major surgery or having any systemic disorders, were excluded from the study. TV assessment was done by Prader’s orchidometer with Tanner staging and correlation was statistically analyzed. Results: The maximum boys belonged to 15–16 years of age group (14.7%), and 9.3% of boys were in 10–11 years of age group. The secondary sexual characters were observed to increase with the increase in MTV. The MTV for P1 was 4.46 ml, for P5 was 22.68 ml, and for G1 and G5, it was 4.69 ml and 23.27 ml, respectively (p

Objectives Measuring testicular volume (TV) by orchidometer is routine in the clinic when staging male puberty. We have developed a simulation model for TV estimation and investigated whether training medical students, using a workshop with simulation models, could improve the accuracy and reliability of TV estimation. Methods All participating medical students watched a video representing standard undergraduate training in male pubertal assessment. Volunteers were then randomised directly to assessment or to attend a workshop consisting of a further video and four stations contextualising and practising the skills required for TV estimation, prior to assessment. Three child mannequins displaying testes of 3 mL, 4 mL (twice), 5, 10 and 20 mL were used for assessment. Participants were asked to return a fortnight later for repeat assessment to assess intra-observer reliability, the effect of repeated examinations on accuracy and time on skill retention. Results Ninety students participated (55F), 46 attended the workshop and were considered “trained”. There was no difference between the groups in numbers of correct estimations (29% trained, 27% untrained, p=0.593). However, the trained group’s estimations were closer to the true volume, with more from the trained group one bead away (p=0.002) and fewer more than three beads away from the true volume (p Conclusions Overall TV estimation accuracy was poor. Workshop-style training improved accuracy, reliability and retention of skill acquisition and could be considered as a useful learning tool.

The Prader orchidometer is the standard method used to measure testicular volume (TV) in children and adolescents.To assess the concordance in the estimation of TV and puberty onset with the Prader, Chipkevitch, and Sotos orchidometric techniques.Cross-sectional descriptive study conducted among male children and adolescents aged 9-20 years. For each adolescent, TV was measured with the methods by Prader (gold standard), Chipkevitch (graphic model), and Sotos (measurement of testicular width with a plastic ruler and use of a formula equivalent to the ellipsoid equation). Male children and adolescents with urogenital conditions and disorders affecting testicular growth were excluded. Kappa statistics was used to determine concordance among methods for puberty onset, and intraclass correlation coefficient (ICC) and Bland-Altman (BA) plots for TV.In total, 377 healthy males were included. Regarding the concordance for TV (mL), the Prader-Chipkevitch comparison obtained an ICC of 0.994 and a p0.001; while the Prader- Soto comparison obtained an ICC of 0.312 and a p0.001. With the BA plots, mean differences were close to 0 mL in the Prader-Chipkevitch comparison and close to 8 mL in the Prader- Sotos comparison. Concordance for puberty onset obtained a kappa value of 0.93 and 0.75 in the Prader-Chipkevitch and Prader-Sotos comparisons, respectively.The Prader and Chipkevitch orchidometers show an excellent concordance in estimating TV and puberty onset; therefore, both methods could be used interchangeably in the daily care of male adolescents. The Sotos method showed a high concordance in estimating pubertal onset, but low in measuring TV.Introducción. El orquidómetro de Prader es el método estándar para medir el volumen testicular (VT) en niños y adolescentes. Objetivo. Evaluar la concordancia en la estimación del VT y del inicio puberal con las técnicas de orquidometría de Prader, Chipkevitch y Sotos. Métodos. Diseño descriptivo transversal realizado en varones de entre 9 y 20 años. Se midió el VT (ml) en cada adolescente con las técnicas de Prader (método de referencia), Chipkevitch (modelo gráfico) y Sotos (medición de ancho testicular con regla plástica y fórmula equivalente a ecuación elipsoide). Se excluyeron varones con patología urogenital y enfermedades que afectan el crecimiento testicular. Para la concordancia entre métodos, se utilizó kappa para el inicio puberal, y coeficiente de correlación intraclase (CCI) y gráficos de Bland-Altman (GBA) para el VT. Resultados. Se incluyeron 377 varones sanos. Para la concordancia en VT (ml), la comparación Prader-Chipkevitch obtuvo CCI: 0,994 y p0,001; y de CCI; 0,312 y p0,001 para la de Prader-Sotos. En los GBA se halló una media de las diferencias cercana a 0 ml en la comparación Prader-Chipkevitch y cercana a 8 ml en la de Prader-Sotos. El acuerdo en el inicio puberal obtuvo un valor de kappa 0,93 en la comparación Prader-Chipkevitch y de 0,75 en la de Prader- Sotos. Conclusión. Los orquidómetros de Prader y Chipkevitch tienen una excelente concordancia en la estimación del VT y el inicio puberal; por lo tanto, podrían intercambiarse en la atención diaria de varones adolescentes. El método de Sotos mostró una concordancia buena en la estimación del inicio puberal, pero baja en la medición del VT.

Purpose: To determine references for penile circumference according to age in prepubertal children and whether this measurement can be used as a basic penile parameter along with stretched penile length in prepubertal children. Materials and Methods: A total of 750 children (mean age, 4.2±3.4 years) aged under 14 years without penile problems were enrolled in this study. Children with penile or testicular abnormalities were excluded. All data were gathered at the outpatient clinic by a single pediatric urologist from July 2017 to April 2020. Penile parameters (baseline and stretched penile length, penile circumference) and testicular volumes were measured by using an elastic ruler and a Prader orchidometer, respectively. Results: Mean baseline and stretched penile lengths were 3.0±1.0 cm and 4.2±1.0 cm, respectively. The mean penile circumference was 4.2±0.9 cm. The stretched penile length was similar to penile circumference (p=0.425). This similarity was found for each age group except for the 0–1-year-old and 3–4-year-old age groups (p=0.001 and p=0.034, respectively). As children grow into adolescence, stretched penile length increases significantly compared to penile circumference. Conclusions: Penile circumference increased with age like stretched penile length and testicular volume in prepubertal children. Stretched penile length and penile circumference were found to be similar. This study can be used as a basic reference for penile circumference values in prepubertal children.

Background Testicular size assessment is an important and initial technique for the evaluation of gonadal function. Our study aims to determine the correlation between paediatric testicular volumes measured with the orchidometer, high-resolution ultrasonography (US) and intra-operative measurements using calipers. Results This is a prospective observational study of 127 boys presenting to our institution with non-emergent scrotal conditions between January 2007 and October 2008. Volume estimates of both testes were measured using the Prader orchidometer. The patient was then sent to a radiologist who measured the testicular volumes using US, being blinded to the orchidometer estimates. At surgery, the testicular dimensions on the side of the pathology were obtained with a vernier caliper. The testicular volumes by US and caliper were calculated using the formula 0.71 × Length × Width × Height. The relationship between the measured volumes was determined using Pearson’s correlation statistic and Student’s t test. The level of significance for all analysis was set at p r = 0.544; 0.537, p r = 0.537; 0.638, p r = 0.382; 0.829, p Conclusion Prader orchidometer testicular volume estimates correlate significantly with US estimates in children. In resource-constrained settings, it could be used for an accurate and quick testicular volume assessment.

AIM: To estimate references for testicular volume measured with ultrasound and Tanner stages of pubic hair in Norwegian boys, and to compare the timing of puberty with data from similar populations. METHODS: Testicular volume was derived from ultrasound measurements of testicular volume in a cross-sectional study of 514 healthy boys. A continuous testicular volume for age reference curve was estimated with the LMS method. Tanner stages for pubic hair were clinically assessed in 452 boys. Age references for pubertal milestones were estimated with probit regression. RESULTS: Puberty onset, defined by an ultrasound testicular volume of 2.7 mL, equivalent to an orchidometer volume of 4 mL, occurred at a mean (SD) age of 11.7 (1.1) years. The reference range was 9.7 (3rd) to 13.7 years (97th percentile). Pubic hair (Tanner stage 2) appeared on average at 11.8 (1.2) years with a corresponding reference range of 9.5-14.1 years. CONCLUSION: The references for testicular volume measured with ultrasound are continuous in age and allow for the quantification of pubertal development. The age distribution of reaching pubertal milestones was comparable with data from other Northern European countries. ispartof: ACTA PAEDIATRICA vol:109 issue:8 pages:1612-1619 ispartof: location:Norway status: published

Background: Hypogonadism in male patients with diabetes mellitus is associated with older age, obesity and poor glycaemic control. The patterns of sperm count, testicular volume, sperm motility and morphology have also been reported to be abnormal in these patients, though reports are conflicting. The objectives of this study were to assess gonadal function and sperm parameters in Nigerian males with diabetes mellitus. Methods: A study sample of 150 males consisting of 108 patients and 56 age-matched controls were recruited. The ADAM questionnaire was used to obtain a clinical score for hypogonadism. Laboratory parameters measured were fasting plasma glucose, serum LH, FSH, free testosterone, total cholesterol, LDL, HDL and triglyceride. Testicular volume was measured with a Prader orchidometer. Total sperm count, sperm morphology and motility were assessed. Results: Hypogonadism was present in 38.9% of males with diabetes compared to 3.6% in controls. The patients with diabetes had significantly lower sperm count, reduced sperm motility and increased abnormal forms than the controls (p

Introduction Hypogonadism refers to a syndrome that results from failure of gonads to function properly. The main concern is considerable rise in morbidity, as shown by increased cardiovascular risk, infertility, osteoporosis and above all, the psychological impact on the life of the patients with hypogonadism. Judicious steroid replacement and culturally-sensitive psychological support before and during steroid therapy remains the key tool in the management of this condition. The present study aimed at filling the knowledge gap on hypogonadism in Cameroon. Methods We conducted a cross-sectional study over a period of 12 months, in 3 reference hospitals of Cameroon. We included males and females diagnosed with hypogonadism, aged 16 to 50 years and 16 to 45 years respectively. After a complete clinical examination, patients were invited to fill the modified middlesex hospital questionnaire for psychoneurotic evaluation. Results We recruited 59 patients with a sex ratio of 1:1. The mean age of the females and males were 27.7 ± 9.1years and 30.8 ± 11.7 years respectively. Normosmic Idiopathic Hypogonadotropic Hypogonadism (NIHH) was the most common presentation. Compulsive obsessive traits, phobic anxiety and hysterical trait, were most pronounced in these patients. Testosterone titers significantly correlated positively with testicular size and negatively with body mass index (BMI). A significant positive correlation was found between the testicular volumes measured with ultrasound (US) and with the orchidometer. Conclusion Normosmic idiopathic hypogonadotropic hypogonadism is the most common presentation of hypogonadism in the study population. There is a significant psychosocial impact requiring further investigation and attention.

Summary Introduction Testicular volume (TV) can be obtained by either scrotal ultrasound (SU) or orchidometer. Scrotal ultrasound allows for a more objective measurement; however, the interobserver and intra-observer variability of TV measurements has not been rigorously studied. Objective The authors measured intra-observer and interobserver variability of SU TV measurements in pediatric patients to assess the reliability and reproducibility of SU. Special attention was paid to how often a 20% discrepancy in TV was noted as this has previously been utilized as an indication for varicocelectomy. Design Patients with an indication for SU or undergoing an ultrasound for another reason were prospectively recruited. Two different urologic specific ultrasound technicians (A and B) performed SU to assess interobserver variability. A second measurement was taken by technician A within 90 days to assess intra-observer variability (A vs A1). The technicians were blinded to other ultrasound results. Results Fourteen patients (28 testes, 56 volume measurements) were included in the intra-observer group and 17 patients (34 testes, 68 volume measurements) in the interobserver group. The mean time to repeat intra-observer ultrasound measurements (range) was 46 days (23–84). Mean age (range) in the intra-observer group was 14.3 years (11–19) and 14.1 years (11–19) in the interobserver group. Indication for ultrasound was varicocele (n = 6), scrotal pain (4), hydronephrosis (3), hydrocele (2), epididymal cyst (2), posterior urethral valves (1), and testis asymmetry (1). Utilizing Bland–Altman analysis and plots, variability was seen in both intra-observer and interobserver measurements. The mean values for testicular sizes for technician A and technician B were 13.0 ± 9.7 cm3 vs 13.8 ± 9.9 cm3, respectively. The mean values for TV measurement for technician A's first and second measurements (A, A1) were 14.3 ± 9.7 cm3 and 14.8 ± 8.9 cm3, respectively. An errant 20% difference in TV measurements for the same testis was seen in 25% (7 of 28) of intra-observer measurements and 35% (12 of 34) of interobserver measurements. These 20% differences were more common with a lower body mass index (odds ratio, OR = 0.74, p = 0.01) in the interobserver group, and lower TV was a predictor in the intra-observer group (OR: 0.82, p = 0.009). Conclusions Variability exists in both interobserver and intra-observer measurements of TV by dedicated urologic ultrasonographers, and greater than 20% of differences in measured TV in same testicles occurred in over 25% of cases. Caution should be exercised in basing operative decisions and scientific studies on limited measurements of TV. Download : Download high-res image (128KB) Download : Download full-size image

Background During pubertal development in healthy boys, increased levels of different sex steroids occur which are responsible for sexual maturation and physical changes. However, relationships between various sex hormones and pubertal development stages have not been sufficiently studied. Methods The investigation included 165 normal boys (mean age 12.7±2.8 years, mean body mass index [BMI] 19.6±4.2 kg/m2). Pubic hair (PH) stages were stratified by Tanner and testicular volume (TV) by means of the Prader orchidometer and assigned to the prepubertal, pubertal and postpubertal development phase. Four different sex steroids (testosterone [TE], dehydroepiandrosterone [DHEA]/dehydroepiandrosterone-sulfate [DHEAS], androstenedione (AE), 17-hydroxyprogesterone [17-OHP]) were measured in saliva by enzyme-linked immunosorbent assay (ELISA) and as serum total steroids by different assays (radioimmunoassay [RIA], chemiluminescence immunoassay [CLIA], electrochemiluminescence immunoassay [ECLIA]). Validation of saliva-based ELISA tests included data related to inter- and intra-assay coefficients of variation (CVs), recovery and linearity. Results Using Spearman rank correlation, salivary steroids significantly correlated (p Conclusions Salivary TE permits a good non-invasive characterization of pubertal maturation stages. The consideration of further salivary sex steroids did not improve diagnostic accuracy.

Context\ud Measuring testicular volume (TV) by orchidometer is the standard method of male pubertal staging. A paucity of evidence exists as to its inter‐ and intra‐observer reliability and the impact of clinicians’ gender, training and experience on accuracy.\ud \ud Objective\ud Prosthetic testicular models were engineered to investigate accuracy and reliability of TV estimation.\ud \ud Design\ud Simulation study.\ud \ud Setting\ud Conducted over three‐day 2015 British Society for Paediatric Endocrinology and Diabetes (BSPED) meeting.\ud \ud Participants\ud 215 meeting delegates (161F, 54M): 50% consultants, 30% trainees, 9% clinical nurse specialists, 11% other professionals.\ud \ud Intervention\ud Three child‐sized mannequins displayed latex scrotum containing prosthetic testicles of 3ml, 4ml, 5ml, 10ml and 20ml. Demographic data, paediatric endocrinology experience, TV examination training, examination technique and TV estimations were collected. Delegates were asked to repeat their measurements later during the meeting. Scrotum order was changed daily.\ud \ud Main outcome measure\ud Accuracy by variance from the simulated TV. Inter‐ and intra‐observer variability.\ud \ud Results\ud 1284 individual estimations were obtained. Eighty‐five participants repeated measurements. Delegates measured TV accurately on 33.4% (±2.6) of occasions: overestimations 37.7% (±2.3), underestimations 28.7% (±1.8) (Fleiss Kappa score 0.04). The accuracy of assessing a 4 ml testis was 36‐39%. Observers underestimated the volume when paired with a 3ml testes and overestimated when paired with a 5 ml testis demonstrating a tendency impose biological symmetry. Intra‐observer reliability was lacking; individuals giving different estimations for the same size testicle on 61% (±4.2) of occasions, 20% (±3.5) of estimations were more than 1 size outside the previous measurement. On only 39% (±4.2) of occasions did individuals agree with their previous estimation (irrespective of whether or not it was initially accurate). Training did not impact on results but experience did improve accuracy.\ud \ud Conclusions\ud Overall TV estimation accuracy was poor. Considerable variation exists between and within subjects. Seniority slightly improved measurement estimation.

Background: The standard five-stage clinical systems of Tanner and Marshall for assessing pubertal development are limited by observer variations. The measurement of testicular volume, in addition, will make assessments objective. It is important to determine the mean testicular volumes (MTVs) for a given population as reference standards. Aim: To determine the MTVs in children between 8 and 17 years and to compare the MTV with Tanners staging. Methods: A cross-sectional study was conducted on 750 healthy school boys from 2 schools in Chennai between 8 and 17 years of age by a single observer to reduce the observer variation. Tanner’s staging and testicular volume measurement were done using a Prader’s orchidometer. Results: Of the 750 boys studied, the MTV of both the right and left testes was found to increase from 2.47±0.70 cc at 8 years of age, to 3.84±1.91 cc at 12 years, to 15.93±6.65 cc at 17 years of age (p=0.0001). The mean age was found to be increased from 12.69 years at sexual maturity rating (SMR) Stage-2, to 15.66 years at SMR Stage-5. We found a significant positive correlation between SMR and height (p=0.0001), weight (p=0.0001) and body mass index (p=0.0001). The average size of both the right and left testes was found to be increased from 2.86±1.12 cc at SMR Stage-1 to 12.51±4.67 cc at SMR Stage-3 to 18.90±4.64 cc at SMR Stage-5. In our study, 0.5% (n=4) had an MTV of 4 cc at the age of 8, 0.4% (n=3) had an MTV of

To measure Penile length (PL) and Testicular volume (TV) in newborn boys for assessing genital abnormalities.In a tertiary care setting, measurements of PL and TV were recorded from 480 babies born on alternate days except the weekend, at 24 to 72 h of life by one investigator with the same set of instruments. The penis was stretched to the point of increased resistance and the distance from the tip of the glans penis to the pubic ramus was measured as the stretched PL. Testicular volume was measured by a Prader orchidometer. Improvised beads made of plasticine were used for recording volumes1 ml.In the study cohort, 365 (76.04 %) were term babies. The mean PL was 34 ± 4.7 mm for the whole cohort while the corresponding value for mean TV was 0.6 ± 0.2 ml. The gestation age-wise percentile charts of PL and TV have been generated. There was modest positive correlation between PL and TV. Positive correlation was also observed between PL and TV and birth weight, body length, and head, chest and arm circumference. Both PL and TV showed statistically significant increase with gestational age. By the index data, the cut-off for suspecting abnormal penile length should be24.5 or45.5 mm for term babies.The normative values generated can serve as reference standard in the diagnosis of penile length abnormalities in Indian babies and in clarifying issues of ambiguous genitalia and maldevelopment of male external genitalia.

Context (Background): While the semen analysis appears to be the cornerstone in the evaluation of male fertility, the testicular size is a cheap, easy, and convenient to measure yet an ignored parameter for predicting the same. There is insufficient literature for identifying the testicular size cutoff among the Indian men. Aims: The study is aimed to correlate between the testicular volume and length with exocrine testicular function and to set a cutoff size for infertility in Indian men. Settings and Design: The study examined 354 cases over a period of 2 years. The cases comprised 258 men presenting with infertility as well as 96 fertile men as control. Materials and Methods: All the patients had their testes examined using Seager's calipers and Prader's orchidometer, infertile men had their semen analysis. Statistical Analysis: SPSS software and Chi-square test were applied, keeping P < 0.05 statistically significant. Results: The mean testicular volume and length in azoospermic patients were 10.3 ml and 2.4 cm, respectively, whereas in oligoasthenospermic patients they were 13.2 ml and 3.2 cm, respectively. The mean testicular volume, length among cases, and controls were 12.6 ml, 3.2 cm, 18.3 ml and 3.81 cm, respectively. Conclusion: Testicular size correlates significantly with severity of exocrine and endocrine functions. The testicular volume and length average for predicting infertility among Indian men should be 18 ml and 3.8 cm, respectively, unlike the international standards of 20 ml and 4.6 cm.

A varicocele is an abnormal dilation of the pampiniform plexus of veins in the scrotum which begins at puberty in approximately 15% of males. Although common in the general population and often asymptomatic, varicoceles are associated with gonadal dysfunction including testicular atrophy, infertility, and hypogonadism in a subset of men diagnosed later in life. Because of the high prevalence and uncertain pathogenesis, definitive management guidelines for varicoceles diagnosed in the pediatric and adolescent population remain poorly defined. The varicocele is the most common etiology of male factor infertility, and treatment in the pediatric and adolescent population may improve semen quality and improve fecundity in adulthood. Evaluation of the pediatric and adolescent varicocele should include history, physical exam, and measurement of testicular volume with orchidometer or ultrasound. Testicular volume differentials and peak retrograde flow on Doppler ultrasonography are important factors in risk stratification of the pediatric varicocele population. Semen analysis and reproductive endocrine assessment should also be considered as part of the workup for adolescent patients. A variety of treatment approaches exist for varicocele, and while the microsurgical subinguinal approach is the gold standard for the adult population, it has yet to be confirmed as superior for the adolescent population. Referral to an andrologist for the adolescent patient with varicocele should be considered in equivocal cases. While active treatment of varicocele in the pediatric and adolescent population is controversial, it is clear that some untreated patients will suffer symptoms later in life, while overtreatment remains a concern for this large, vulnerable population. Therefore, surveillance strategies and improved accuracy in diagnosis of clinically important pediatric varicoceles prompting treatment are needed in the future.

Introduction Recent publications report a decrease in the age of onset of pubertal changes in the United States and Europe. The PROSPEL study (PRemier Observatoire des Stades Pubertaire en Liberal) will provide the first French data on the age at which pubertal signs appear. Before considering this work at the national level, we wanted to assess its feasibility. Materials and methods Private pediatricians and general practitioners were recruited in Bordeaux and Toulouse. Before participating in the study, they had been trained in pubertal assessment and then evaluated. Each physician completed 1–4 weeks of inclusion during which children aged 5–18 years seen in consultation were included, except children who were adopted or had a chronic condition. Pubertal stages were assessed according to Tanner's classification and using an orchidometer for testicular volume. The causes of non-realization were documented where appropriate. Inter-individual reproducibility was analyzed by a double examination for a number of children who had previously given their consent. Results In total, 63 physicians participated in the study (35 pediatricians and 28 general practitioners). All were certified at the end of the training session. A total of 2646 children were included (1318 girls, 1328 boys) with a homogeneous age distribution. The study was carried out in 83.5% of cases. The main reason for non-realization was that physicians did not propose the study to patients who met the criteria (10.1%). Lack of time was the main reason. Inter-individual reproducibility was excellent. Discussion and conclusion Our results attest to the good feasibility of the PROSPEL study. They allowed us to validate our methodology, the training and certification of the participating physicians, and to consider extending the study to the national level.

Prader orchidometry has been the standard method for evaluating testicular size. As this technique is subjective and tends to overestimate the testicular volume, ultrasound (US) has been proposed as more reliable. To evaluate the intra- and interobserver agreement of US measurements of testicular volume and to compare US with the Prader orchidometer. Dimensions of the right testicle were measured using US in 57 boys ages 6.5 to 16.4 years (mean: 12.0 years). The measurements were performed twice by one main observer and once by a second observer. A third observer estimated testicular volume using a Prader orchidometer. Agreement was investigated with Bland-Altman plots, summarized as the mean and standard deviation (SD) of differences, 95% limits of agreement and technical error of measurement. Mean intra-observer difference of testicular volume was 2.2%, SD=9.2% (limits of agreement: -20.3 to 15.9%) and technical error of measurement 6.5%. The mean interobserver difference was 4.8%, SD=20.7% (limits of agreement: -35.7 to 45.3%) and technical error of measurement 14.6%. Comparing US and orchidometer volumes required conversion that was nonlinear and volume dependent, estimated as VolOM = 1.96×VolUS0.71. The mean difference after transformation was 0.7% with an SD of 18.0% (limits of agreement: -34.5 to 35.9%). Our results showed a small mean intra- and interobserver difference that indicates the potential of US for measurement of testicular volume at group level. The intra-observer error was limited, which justifies its use in longitudinal follow-up of testicular development in an individual child, but the larger interobserver variability indicates the need for good standardization of methods. Agreement between the two methods requires a power transformation.

Introduction Puberty is an essential physiologic process that is characterized by the appearance of secondary sexual features. Secular changes in puberty occur from one generation to another and need to be documented. The assessment of pubertal stages in a child is only useful if recent and reliable reference data from the same population is available for comparison. The study aimed to profile clinical normative sexual maturity characteristics for children in Calabar, South-South Nigeria. Methods A cross-section of primary and secondary school pupils aged 6-18 years in the city of Calabar, Nigeria were randomly selected for the study. Sexual maturating rating was assessed using the pubertal staging for breast development and pubic hair as described by Marshall and Tanner (Tanner staging). Testicular volume in boys was measured using the Prader orchidometer. Menarche and "voice break" were established by recall of the event by the girls and boys respectively. Results A total of 2,830 children were seen, 1542 (54.5%) boys and 1288 (45.5%) girls. The mean age of onset of pubic hair was 11 years in both boys and girls. Pubertal testicular volume of 4 mls was seen in boys at a mean age of 11 years. Breast development in girls occurred at mean age of 11 years and menarche at 13 years. Conclusion in this study, the onset of puberty is occurring at an earlier age than previously reported in Nigeria with a secular trend of a decreasing age at onset of puberty. These sexual characteristics are rather occurring at similar ages reported from western countries.

Studies examining the association of anogenital distance (AGD), a biomarker of prenatal androgen exposure, with sexual development in children are lacking. To assess the association between AGD measures and reproductive outcomes, including puberty onset, testicular volume, reproductive hormone levels, and urogenital malformations in boys aged 9-11 years. A cross-sectional study was conducted among children belonging to the Spanish Environment and Childhood (INMA) Project, a population-based birth cohort study. The present sample included 279 boys for whom data were available on AGD, pubertal stage, testicular volume, and relevant covariates. Out of the boys with AGD data, 187 provided a blood sample for hormone analysis. AGD was measured from the center of the anus to the base of the scrotum. Pubertal development was assessed according to Tanner stage of genital development (G1-G5), and testicular volume was measured with an orchidometer. After adjusting for potential confounders, logistic regression analysis showed that AGD was positively associated with testicular volume but not with Tanner stage (>G1 vs. G1), serum hormone levels, or undescended testis. Regardless of their age, body mass index, and Tanner stage (G1 or >G1), boys with longer AGD showed increased odds of a testicular volume >3 mL (OR = 1.06, 95%CI = 1.00-1.19 per 10% increment in AGD; and OR = 3.14, 95%CI = 0.99-9.94 for AGD >42 mm vs. G1 vs. G1), serum hormone levels, or undescended testis. Regardless of their age, body mass index, and Tanner stage (G1 or >G1), boys with longer AGD showed increased odds of a testicular volume >3 mL (OR = 1.06, 95%CI = 1.00-1.19 per 10% increment in AGD; and OR = 3.14, 95%CI = 0.99-9.94 for AGD >42 mm vs. G1), boys with longer AGD showed increased odds of a testicular volume >3 mL (OR = 1.06, 95%CI = 1.00-1.19 per 10% increment in AGD; and OR = 3.14, 95%CI = 0.99-9.94 for AGD >42 mm vs. 3 mL (OR = 1.06, 95%CI = 1.00-1.19 per 10% increment in AGD; and OR = 3.14, 95%CI = 0.99-9.94 for AGD >42 mm vs. 42 mm vs. Longer AGD was associated with testicular growth, an indicator of gonadarche, but not with other reproductive outcomes. Although AGD was positively associated with testicular volume, it remains unclear whether AGD predicts testis size at puberty or is related to puberty onset.

Background There is variation of the age of onset of puberty in a population. The secular trends in the timing of pubertal development have decreased in some parts of the world. Objective To determine the age of pubertal development in healthy Thai boys in Khon Kaen, Thailand and compare it with that in previous studies of Thai boys. Methods A descriptive, cross-sectional study was performed in 316 school boys aged 5–16 years between May and July 2011. Development of the genitals and pubic hair was determined by Tanner staging, and testicular volume was assessed using a Prader orchidometer. All boys were examined by a male pediatrician. Results Genital stage of puberty in boys occurred at a median age of 11.3 years and a mean ± SD age of 11.3 ± 1.3 (mean ± SD, range 8.0–14.9) years, and pubarche occurred at a median age of 12.8 years and a mean ± SD of 12.5 ± 1.2 years (range 9.1–14.9) years. Conclusions No secular trend towards earlier age at pubertal onset for gonadarche in Khon Kaen boys, but pubarche seems to be later than found in previous studies in Thai boys.

OBJECTIVE: To know the correlation between the BMI and SMR among adolescent boys and to determine the average age of different SMR staging among study groups.DESIGN: Prospective study.SETTING: Tertiary centre, Pediatrics department, KRH, GRMC, Gwalior.METHODOLOGY: The study subjects included indoor and outdoor patients as well as students from govt. and private school with age groups from 10 to 16 years group. The anthropometric measurement was done with appropriate privacy and public hair, and testicular staging done with orchidometer as per Tanner's staging. Appropriate statistical test applied to observe the values for the test of significance.RESULTS:15.9%subjects were overweight, 5% subjects were obese and 16.36% were underweight. The mean age in years for genital staging were 12.66 year, 13.79 year, 14.63 year, 16 year for G2, G3, G4 and G5 showing increasing in age with genital maturity. The mean age for public hair staging was 13.08 year. 13.87 year, 14.48 year, 14.75 year for P2, P3, P4 and P5 showing increasing staging with age of adolescent. The study has shown that 34% of adolescent boys with BMI of 85th to 95th percentile (overweight) were found to be having late maturity whereas 27% of adolescent boys with BMI more 95th percent (obese) were found to have late genital maturity. In study the genital stage was showing linear correlation with the mean waist circumference.CONCLUSION: It's concluded that as the age increases the genital and pubic hair of SMR increases. The mean height showed linear correlation with genital staging. Also genital staging was showing linear correlation with waist circumference. 34% of adolescents boys with BMI of 85th to 95th percentile (overweight) were found to be having late maturity whereas 27% of adolescent boys with BMI more 95th percentile (obese) were 85th to 95th percentile and 6.5% of boys with 5th to 95th percentile had early genital maturity.

Context: There are orchidometer-based testicular volume nomograms for Indian children; however, accurate and reliable values measured by ultrasound are lacking. Aims: The aim of this study was to (1) measure the testicular volumes of boys from birth to 8 years and generate reference values and (2) to identify factors if any that may influence variation in testicular volumes. Settings and Design: This was a prospective observational study conducted on 320 children in the Department of Pediatric Surgery, Christian Medical College, Vellore, India. Subjects and Methods: A total of 320 boys without any genital abnormalities were studied. The testes were scanned using a linear transducer, and the length, width, and depth of each testis were recorded. Testicular volume was calculated using Lambert's equation – length × width × depth × 0.71. Statistical Analysis Used: Mean testicular volumes and standard deviation for every year of age were calculated. The centile values for testicular volume were computed using R software. Results: Age-specific nomogram of each testis was created separately. Interobserver variability of the measurement was shown to be up to 0.3 ml. No difference was demonstrated in the testicular volumes between the right and left testis. No correlation was found between body weight and body mass index with testicular volume. From the data on differences in size between the two sides, a volume differential index of 27% corresponds to the 95th centile. Conclusions: Reference values have been created for testicular volumes in prepubertal Indian children that could be used to assess the effects of disease and surgical interventions in this age group.

Genital development is affected by pubertal process to a great extent, and puberty is a complex phenomenon that is influenced by multiple factors resulting in individual differences. We studied penile length and its relationship to pubertal stage in boys 13 to 15 years old.Healthy boys who were candidates for military high school were evaluated between June and July 2011. Age, residence and body mass index were recorded. Stretched penile length was measured. Pubic hair was assessed according to Tanner and Marshall staging. Genital puberty stage was defined by measurement of testicular volume with Prader orchidometer. Relationship of penile length to age, residence, pubertal stages and body mass index was evaluated statistically.A total of 1,539 boys were included in the study. Mean ages and number of patients according to genital stage were as follows. Mean age was 14 years for genital stage 1 (5 patients), 13.9 years (range 13 to 15) for stage 2 (194), 14.07 years (13 to 15) for stage 3 (965) and 14.11 years (13 to 15) for stage 4 (375). Linear regression analysis revealed a significant effect of body mass index, genital stage and pubic hair stage on penile length (p0.001) but no significant effect of age or residence. Mean penile length was significantly different among different age groups and among pubertal stages. However, mean penile lengths of different age groups within the same pubertal stage were similar.Penile length during puberty should be evaluated individually according to the current pubertal stage. Our study offers a reliable reference table of penile length for pubertal age group.

Background Evidence suggests that obesity may be related to early onset of puberty in girls. However, few studies have found a link between body mass index (BMI) and puberty onset in boys. More study is needed to assess the relationship of BMI to penile length and testicular volume. Objective To investigate the relationship ofBMI to penile length and testicular volume in adolescent boys. Methods A cross􀀿sectional study was carried out on adolescent boys aged 9 to 14 years in Secanggang District, Langkat Regency, North Sumatera Province in August 2009. Subjects' BMIs were calculated by dividing body weight (BW) in kilograms by body height (BH) in meters squared. Penile length (em) was measured with a spatula. We took the average of three measurements from the symphysis pubis to the tip of the glans penis. Testicular volume (mL) was estimated by palpation using an orchidometer. Pearson's correlation test (r) was used to assess the relationship of BMI to penile length and BMI to testicular volume. Resu lts There were 108 participants, consisting of 64 primary school students and 44 junior high school students. Subjects' mean age was 11.7 (SO 1.62) years; mean BW was 35.2 (SO 8.48) kg; mean BH was 1.4 (SO 0.11) m; mean BMI was 17.5 (SO 2.34) kg/m'; mean penile length was 4.5 (SO 1.25) cm; and mean testicular volume was 3.6 (SD 1.20) mL. We found no significant association between BMI and penile length (r􀀻-0.25, P􀀻0.06), nor between BMI and testicular volume (r􀀻-O.21; P􀀻O.09). Conclusion T here was no significant relationship ofBMI to penile length nor BMI to testicular volume in adolescent boys. [Paediatr lndanes. 2012;52:267-71].

STUDY QUESTION What diagnoses underlie delayed puberty (DP) and predict its outcome? SUMMARY ANSWER A multitude of different diagnoses underlie DP, and in boys a history of cryptorchidism, small testicular size and slow growth velocity (GV) predict its clinical course. WHAT IS KNOWN ALREADY DP is caused by a variety of underlying etiologies. Hormonal markers can be used in the differential diagnosis of DP but none of them have shown complete diagnostic accuracy. STUDY DESIGN, SIZE, DURATION Medical records of 589 patients evaluated for DP in a single tertiary care center between 2004 and 2014 were retrospectively reviewed. PARTICIPANTS/MATERIALS, SETTING, METHODS Clinical and biochemical data of 174 boys and 70 girls who fulfilled the criteria of DP were included in the analyses. We characterized the frequencies of underlying conditions and evaluated the predictive efficacy of selected clinical and hormonal markers. MAIN RESULTS AND THE ROLE OF CHANCE Thirty etiologies that underlie DP were identified. No markers of clinical value could be identified in the girls, whereas a history of cryptorchidism in the boys was associated with an increase in the risk of permanent hypogonadism (odds ratio 17.2 (95% CI; 3.4-85.4, P < 0.001)). The conditions that cause functional hypogonadotropic hypogonadism were more frequent in boys with a GV below 3 cm/yr than in those growing faster (19% vs 4%, P < 0.05). In this series, the most effective markers to discriminate the prepubertal boys with constitutional delay of growth and puberty (CDGP) from those with congenital hypogonadotropic hypogonadism (CHH) were testicular volume (cut-off 1.1 ml with a sensitivity of 100% and a specificity of 91%), GnRH-induced maximal LH (cut-off 4.3 IU/L; 100%, 75%) and basal inhibin B (INHB) level (cut-off 61 ng/L; 90%, 83%). LIMITATIONS, REASONS FOR CAUTION The main limitation of the study is the retrospective design. WIDER IMPLICATIONS OF THE FINDINGS Prior cryptorchidism and slow GV are two important clinical cues that may help clinicians to predict the clinical course of DP in boys, whereas markers of similar value could not be identified in girls. In prepubertal boys, testicular size appeared as effective as INHB and GnRH-induced LH levels in the differential diagnosis between CHH and CDGP. STUDY FUNDING/COMPETING INTERESTS This study was supported by the Academy of Finland (268356), Foundation for Pediatric Research (7495), Sigrid Juselius Foundation (2613) and the Finnish Medical Foundation (011115). The authors have no competing interests to report. TRIAL REGISTRATION NUMBER Not applicable.

The pattern of testicular growth during puberty may provide important information about early testicular damage and reproductive potential in adulthood.To evaluate pubertal testicular growth in boys with congenital cryptorchidism and controls.Longitudinal case-control study.Andrological Research Center, University of Turku.Altogether, 119 boys participated: 51 cases with a history of congenital cryptorchidism and 65 controls fulfilled the inclusion criteria.None.Testicular volume by an orchidometer (mL) and ultrasound (mL), testicular length by a ruler (mm), and onset of pubertal testicular growth (y). Longitudinal testicular growth was analyzed with a nonlinear mixed-effect model.The mean age of the onset of pubertal testicular growth (age at the attainment of3 mL by orchidometer) was 11.7 and 11.8 years in cryptorchid cases and controls, respectively. The difference between cases and controls was not significant. Modeled postpubertal testicular size was smaller among bilaterally and unilaterally undescended testis than in controls. There was a high level of agreement between testicular sizes of 3 mL by orchidometer and 25 mm by ruler as cut-offs in definition of the onset of puberty. An orchidometer size of 3 mL and ruler length of 25 mm corresponded to 1.6 and 1.7 mL by ultrasound (with Lambert's formula), respectively.Testicular growth in puberty was impaired in congenitally cryptorchid boys. This suggests a poor perinatal development of the cryptorchid testis. The timing of the onset of pubertal testicular growth, however, did not differ which suggests an intact hypothalamic-pituitary axis.

Context: Epidemiological evidence on maternal and paternal heritability of the wide normal variation within pubertal timing is sparse. Objective: We aimed to estimate the impact of parental pubertal timing on the onset of puberty in boys and girls. Design: Annual pubertal examinations of healthy children in a longitudinal cohort study. Information on parental timing of puberty (earlier, comparable to, or later compared to peers) and menarche age was retrieved from questionnaires. Participants: A total of 672 girls and 846 boys. Main Outcome Measures: Age at onset of pubic hair (PH2+), breasts (B2+), and menarche in girls; and PH2+, genital stage (G2+), and testis >3 mL with orchidometer (Tvol3+) in boys. Results: In boys, pubertal onset was significantly associated with pubertal timing of both parents. PH2+ and Tvol3+ were earlier: −11.8 months (95% confidence interval, −16.8, −6.8)/−8.9 (−12.8, −4.9), and −9.5 (−13.9, −5.1)/−7.1 (−10.4, −3.7) if the father/mother, respectively, had early pubertal development compared to late. In girls, menarche was significantly associated with both parents' pubertal timing: −10.5 months (−15.9, −5.1)/−10.1 (−14.3, −6.0) if father/mother had early pubertal development compared to late. For the onset of PH2+ and B2+ in girls, estimates were −7.0 months (−12.6, −1.4) and −4.1 (−10.6, +2.4)/−6.7 (−11.0, −2.5), and −6.7 (−11.0, −2.0) for fathers/mothers, respectively. Maternal age of menarche was significantly associated with the onset of all pubertal milestones except PH2+ in girls. Conclusions: Maternal as well as paternal pubertal timing was a strong determinant of age at pubertal onset in both girls and boys. Age at breast and pubic hair development in girls, which has declined most during recent years, seemed to be least dependent on heritability.