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Listeria monocytogenes is Gram-positive facultative intracellular pathogen often foodborne and found elsewhere. It is an uncommon cause of illness in the general population. However, it is an important cause of severe infection in neonates, pregnant women, elderly and immunosuppressed patients. Listeriosis has unique preference for pregnant women. Maternal listeriosis is a diagnostic challenge, and intrauterine infection can lead to severe complications such as amnionitis, preterm labor, spontaneous abortion, stillbirth and neonatal sepsis. From 2001 to 2005, 16 patients with L. monocytogenes were identified in this hospital; four (25%) were pregnant women. Clinical and laboratory findings are described. There were 3 preterm deliveries and 1 spontaneous second trimester abortion. Three women with listeriosis had no predisposing factors other than pregnancy. One patient was on immunosupressive drugs for ulcerative colitis. Fever was the most common symptom. Infected neonates were most commonly diagnosed with early-onset listeriosis (two cases) or fetal demise (one case). Pregnancy can be the only risk factor for listeriosis. Listeriosis should be considered during the evaluation of febrile syndrome in pregnancy as this condition can be the only risk factor. Blood and amniotic fluid cultures are useful diagnostic tests. Perinatal complications remains high.

Las coagulopatías hereditarias que afectan a mujeres jóvenes, representan un problema durante el embarazo, debido a que conllevan un aumento significativo en el riesgo de hemorragia durante el embarazo, parto y puerperio. Las alteraciones más frecuentes corresponden a la enfermedad de von Willebrand (1 a 2% de la población) y la hemofilia A (1/10.000 personas). Presentamos el caso clínico de una embarazada con antecedentes familiares de hemofilia A que controló su embarazo en nuestro centro; además entregamos una revisión sobre el tema coagulopatías hereditarias y embarazo Patients with hereditary coagulopathies are at increased risk of bleeding during pregnancy, labor and puerperium. The most frequent are the von Willebrand disease (1-2% of population) and type A hemophilia (1/10.000 people). Here is presented a clinical case of pregnancy and type A hemophilia, with a review about pregnancy and hereditary coagulopathies

Se analiza retrospectivamente la experiencia de los últimos 13 años en el manejo de la patología anexial quirúrgica en niñas y adolescentes menores de 19 años. Se revisa la forma de presentación clínica y los hallazgos anatopatológicos de 106 pacientes. Del total de lesiones anexiales, un 62% correspondieron a lesiones neoplásicas benignas y malignas, la mayoría de ellas originadas en el ovario. El riesgo de malignidad para las lesiones neoplásicas fue de un 26,7%. La neoplasia ovárica benigna más frecuente fue el teratoma maduro (31,1%). Las neoplasias malignas más frecuentes fueron las originadas en el estroma gonadal específico y en el tejido germinal (en conjunto 37,5% del total de neoplasias malignas). La forma de presentación clínica más frecuente fue el dolor abdominal habitualmente como manifestación de complicación de una neoplasia benigna. La vía de abordaje más frecuente fue por laparotomía y se privilegió la cirugía conservadora para preservar el potencial reproductivo A retrospective analysis of a thirteen years experience in the surgical management of adnexal mass in girls and teenagers younger than 19 years old was done. We reviewed the clinical course and pathological findings of 106 patients. A 62% of adnexal masses were due to neoplasic formation, the majority of them originated in the ovary. Among the neoplasic lesions, the risk of malignacy was 26.7%. The most frequent benign ovarian neoplasia was the mature teratoma (31.1%). The two more frequent malignant neoplasias were those originated at the specific gonadal stroma and at germinal tissues (together representing 37.5% of malignant tumors). The most frequent symptom of clinical presentation was abdominal pain, as manifestation of a complicated benign neoplasic lesion. The most frequently used surgical approach was laparotomy. The main goal was privileging conservative management to preserve the reproductive potential

Background: The World Health Organization recently defined the criteria for constructing birth weight curves using population based data. Aim: To construct a national curve of weight, size and ponderal index at birth for Chile, following the criteria suggested by the World Health Organization (WHO) expert committee report from 1995. Material and methods: A national database from the Chilean Institute for Statistics was used. All alive singleton deliveries during the period from 1993 to 2000 were included. A birth weight curve for the total population as well as for size and ponderal index at birth was construted, including percentile distribution, mean and standard deviation of values for gestational age. Stratification by sex was performed. Results: A total of 2,049,446 singleton deliveries were analyzed. The 10 percentiles (raw data) for birth weight throughout gestation from 22 to 42 weeks were: 470, 520, 560, 630, 660, 749, 810, 926, 1,031, 1,160, 1,320, 1,480, 1,680, 1,920, 2,190, 2,500, 2,750, 2,910, 3,010, 3,080 and 3,090 g, respectively. Conclusions: A national birth weight for Chilean population (a predominant Hispanic population) was constructed. There are not differences between this curve and the standard proposed by WHO (population from California, USA) suggesting that under comparable perinatal indices, ethnicity is not a relevant factor determining birth weight (Rev Med Chile 2004; 132: 1155-65)

Se presenta la distribución de los hallazgos anátomo-patológicos anexiales en pacientes operadas por patología ginecológica durante el período comprendido entre los años 1991 y 2002. Se analiza su frecuencia según edad, localización anatómica y malignidad. El riesgo de cáncer en pacientes operadas con diagnóstico de tumor anexial es 9,5%. El hallazgo incidental de cáncer en pacientes operadas por patología ginecológica benigna es aproximadamente 1 en 3000 casos (0,3%) Distribution of anatomo-pathological findings in the adnexa is shown for patients operated of a gynecological pathology during the period between years 1991 and 2002. Its frequency is analyzed according to age, anatomic location and malignancy. Cancer risk in patients operated of adnexal mass is 9.5%. Incidental finding of cancer in patients operated of benign gynecological pathology is approximately 1 in 3000 cases (0.3%)