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Chronic hepatitis B virus (HBV) infection is a major risk factor for hepatocellular carcinoma (HCC), and surveillance is recommended for patients without cirrhosis when risk exceeds an incidence rate (IR) of 0.2%. Populations in Asia and sub-Saharan Africa have been associated with HCC at younger ages, but the risk after immigration to Western countries should be investigated. The aim of this study was to study HCC by age and country of origin in people with chronic HBV infection in Sweden. Through national registers, residents with chronic HBV diagnosis (1990-2015) were identified with information on country of origin, immigration/emigration, death, coinfections, antiviral therapy, and HCC. Observation time started at HBV diagnosis, and IR and hazard ratios for HCC were calculated by sex, age, and region of origin. Among 16,410 individuals (47% women), the origin and observation time (person years) were as follows: Western Europe, 2316 (25,415); Eastern Europe, 2349 (26,237); Middle East/North Africa, 4402 (47,320); sub-Saharan Africa, 3677 (30,565); Asia, 3537 (35,358); and other, 129 (1277). There were 232 individuals with HCC (82% in men). The IR increased with age and exceeded 0.2% for Asian men from age group 40-49 years (IR, 0.63; 95% confidence interval, 0.39-1.00), for men of other origins from age group 50-59 years, and for women aged ≥60 years originating from Eastern Europe, Asia, and Middle East/North Africa. After exclusion of patients with cirrhosis or HBV treatment, the IR still exceeded 0.2% in Asian men aged 40-49 years. This study demonstrates that HBV-infected men of Asian origin should be recommended HCC surveillance at younger ages, but there is a need for further studies of HCC incidence in African-born men without cirrhosis living in the Western world.

OBJECTIVES: It is well known that oral health status is associated with oral health-related quality of life (OHRQoL) in the general population. The aim of this study was to describe and analyse OHRQoL among older people in short-term care and its associated factors. MATERIALS AND METHODS: This cross-sectional study included 391 older people in 36 short-term care units. Data were collected via clinical oral assessments, questions about self-perceived oral and general health, Katz Index of Activities of Daily Living (Katz-ADL) and the Revised Oral Assessment Guide (ROAG). OHRQoL was measured using the Oral Health Impact Profile (OHIP-14). Multivariate logistic regression models were applied in the analysis. RESULTS: Poor OHRQoL was reported by 34% of the older people. Associated factors were swallowing problems according to ROAG; quite poor/poor self-perceived physical, psychological and oral health; and being a woman. CONCLUSIONS: There is an association between OHRQoL and older people's self-perceived health according to the OHIP-14. This indicates the importance of early detection of oral health problems in frail older people and to assess both oral health and swallowing problems among older people in short-term care.

Background: Prostate cancer (PCa) is one of the most frequently diagnosed cancers in the world. Emerging evidence suggests that inflammatory cells such as M2 macrophages and regulatory T cells (Tregs) can contribute to cancer progression by suppressing the anti‐tumor immune response. This study investigated the number of CD163‐positive M2 macrophages in PCa tissue. It also investigated the correlation and interaction of M2 macrophages and Tregs. Methods: This nested case‐control study included subjects from a cohort of men diagnosed with PCa as an incidental finding during transurethral resection of the prostate. The cases were 225 men who died from PCa, and the controls were 367 men who survived more than 10 years after PCa diagnosis without disease progression. Infiltrating CD163‐positive M2 macrophages and FOXP3/CD4‐positive Tregs in PCa tissue were identified using immunohistochemistry. The correlation and interaction of M2 macrophages and Tregs were assessed using Spearman's rank‐order correlation and a likelihood test, respectively. Logistic regression was used to estimate odds ratios (ORs) for lethal PCa and macrophage counts. Results: The number of M2 macrophages and Tregs showed a significant correlation (P < 0.001) but no interactions. The OR for lethal PCa was 1.93 (95%CI: 1.23‐3.03) for men with high numbers of M2 macrophages. Also for cases with uncertain outcome (GS categories 3 + 4 and 4 + 3) high numbers of M2 macrophages does predict a poorer prognosis. Conclusions: Our data showed that men with high numbers of M2 macrophages in the prostate tumor environment had increased odds of dying of PCa. It is possible that M2 macrophages, together with other suppressor cells such as Tregs, promote an immunosuppressive environment.

While overweight among adults has been linked with renal cell carcinoma (RCC) risk, little is known about the potential influence of overweight and obesity during adolescence. To ascertain if adolescent body mass index is associated with subsequent risk of RCC, we identified a cohort of 238,788 Swedish men who underwent mandatory military conscription assessment between 1969 and 1976 at a mean age of 18.5 years. At the time of conscription assessment, physical and psychological tests were performed including measurements of height and weight. Participants were followed through linkage to the Swedish Cancer Registry to identify incident diagnoses of RCC. The association between body mass index (BMI, kg/m(2)) at conscription assessment and subsequent RCC was evaluated using multivariable Cox regression. During a follow-up of up to 37 years, 266 men were diagnosed with RCC. We observed a trend for higher RCC risk with increasing BMI during adolescence, where one-unit increase in BMI conferred a 6% increased risk of RCC (95% CI 1.01-1.10). compared to normal weight men (BMI 18.5- < 25), men with overweight (BMI 25- < 30) or obesity (BMI >= 30) had hazard ratios for RCC of 1.76 (95% CI 1.16-2.67) and 2.87 (95% CI 1.26-6.25), respectively. The link between overweight/obesity and RCC appear to be already established during late adolescence. Prevention of unhealthy weight gain during childhood and adolescence may thus be a target in efforts to decrease the burden of RCC in the adult population., Funding Agency:UK Economic and Social Research Council ES/JO19119/1 RES-596-28-0001

Objective: The present study aims to gain knowledge about the dentist's use and choice of digital intraoral imaging methods. Materials and methods: A questionnaire sent to 2481 dentists within the Swedish Dental Society contained questions about the type of X-ray technique used, problems experienced with digital radiography, and reasons for choosing digital technology, and about indications, clinic size and type of service. Response rate was 53%. Results: Ninety-eight percent of the dentists had made the transition to digital radiography; only 2% used film technique, and solid-state detector (SSD) was the most used digital technique. More years in service decreases the likelihood of applying individual indications for performing a full mouth examination. More retakes were done with SSDs compared to storage phosphor plates. Reasons for choosing digital techniques were that work was easier and communication with the patients improved. However, dentists also experienced problems with digital techniques, such as exposure and projection errors and inadequate image quality. The Swedish Radiation Safety Authority states that all radiological examinations should be justified, something not always followed. Conclusions: This study showed that 98% of the respondents, Swedish dentists within the Swedish Dental Society, used digital techniques, and the most used was the solid-state technique., Funding Agency:Dental Research Department, Postgraduate Dental Education Center, Region Örebro County, Sweden 2016-06-07

OBJECTIVE: The present study aims to gain knowledge about the dentist's use and choice of digital extraoral imaging methods, panoramic radiography and cone beam computed tomography (CBCT). MATERIALS AND METHODS: A questionnaire sent to 2481 dentists within the Swedish Dental Society contained questions about the panoramic technique and CBCT technique used, education, clinic size and type of service. The response rate was 53%. RESULTS: The study showed that 61% of the Swedish dentists had access to panoramic techniques and that 84% used a direct digital sensor, while 6% used storage phosphor plate techniques. Around 8% of the Swedish dentists had access to CBCT. It was also observed that group practices had two times higher odds of having panoramic equipment compared with solo practices. Approximately 40% of the dentists had undergone postgraduate education in oral radiology during the last 5 years. Dental nurses and dental hygienists exposed 92% of the panoramic radiographs and 75% of the CBCTs. Thirty per cent of those clinics with access to a panoramic unit exposed >30 panoramic radiographs per month and 56% of the clinics having access to CBCT did more than 75 examinations per year. CONCLUSIONS: Today 61% of Swedish dentists have access to panoramic radiography and 8% have access to CBCT. There is a greater likelihood of having access if the dentist works in the public dental health service or in a group practice and if the dentist has undergone any postgraduate course in oral radiology., Funding Agency:Dental Research Department, Postgraduate Dental Education Center, Region Örebro County, Sweden 2016-06-07

Introduction: The incidence of renal cell carcinoma (RCC), accounting for more than 90% of all renal malignances, has increased globally during recent decades. Obesity is a well-established risk factor for RCC, but earlier research has largely focused on adult exposure to risk. Little is known about the role of overweight and obesity during late adolescence. Objectives: Our objective was to test whether body mass index (BMI) during late adolescence is associated with subsequent risk of RCC. Methods: We used data from a cohort of 238 788 Swedish men who underwent mandatory military conscription assessment between 1969 and 1976 (at a mean age of 18.5 years). At the conscription assessment, physical and psychological tests were performed, including measurements of height and weight. Participants were followed for a diagnosis of RCC until 1 January 2010 through record linkage with the Swedish Cancer Registry. The association between BMI at conscription and subsequent RCC was evaluated using multivariate Cox regression analysis to estimate adjusted hazard ratios and corresponding 95% confidence intervals. Results: During follow-up over a mean of 35.4 years, 266 diagnoses of RCC were identified. We observed a higher RCC risk with increasing BMI in adolescence, where a one unit increase in BMI was associated with a 5% increased risk in RCC (95% CI 1.00–1.10,p<0.049). Compared with normal weight men (BMI 18.5 to<25 kg/m2), men with overweight (BMI 25 to<30 kg/m2) and obesity (BMI 30 kg/m2) had a 1.69 (95% CI 1.12–2.57) and 2.74 (95% CI 1.26–5.96) time higher risk of RCC, respectively. Conclusion: Data from this large population-based cohort study of men show an association between higher BMI in adolescence and a subsequently increased RCC risk, suggesting that overweight and obesity may already begin playing a role in RCC pathogenesis during adolescence. Prevention of childhood and adolescent obesity may thus be a target in efforts to decrease the burden of RCC in