Infant digital fibroma or inclusion body fibromatosis is a rare disorder consisting in a benign proliferative process of myofibroblast cells that in histopathology show cytoplasm inclusion bodies. Nodules develop mainly in fingers and toes of infants. There is high recurrence but spontaneous regression without treatment has also been reported. We present the case of a 4 month-old boy showing a 1.5 x 1.3 x 0.6 cm nodule in the third finger of the right hand. Histological examination revealed spindled tumor cells containing characteristic intracytoplasmic inclusion bodies that stained with vimentin, muscle specific actin and desmin.

OBJECTIVES: To determine the main characteristics of rectal polyps in children in our hospital. MATERIAL AND METHODS: We studied the main clinical and anatomopathological features of 58 cases of rectal polyps in children at Hospital San Bartolomd, from 1984 to 1996. RESULTS: All polyps were histologically of Juvenile type. Mean age was 5,5 - years - old; males were 43 cases (74%), females were 15 cases (26%). The commonest symptoms were rectal bleeding in 54 cases (93%) and tumors in 24 cases (41%). 13 of them sized less than 1 cm (22%), 29 between I to 1,9 cms.(50%), 11 (19%) between 2 to 2,9 cms and 5 sized 3 cms. Length of disease was between I to 6 months in 59% (34 cases), one patient had sudden onset and the longest term was 3 years. We found 57 cases (98%) of single polyps and in only one case was multiple and familiar. CONCLUSIONS: Rectal polyps were tumoral lesions frequent in c...

Introduction. Acute appendicitis is a rare disease in newborns with a high mortality because of unspecific clinical features. We report a case of non-perforated acute appendicitis in a newborn at the San Bartolome Hospital in Lima. Case report. A female newborn weighing 3 170 g in the first day repelled maternal lactation; at the third day, she presented 39°C fever, and later, abdominal distention, constipation, and abundant vomiting. The X-ray films showed a distended gastric camera and paralytic ileum; other auxiliary exams were inconclusive. She was operated with the diagnosis of intestinal obstruction; we found the ceccal appendix with multiple lax adhesions to the ileum. The pathologic study showed an acute not perforated gangrenous appendicitis. Appendicitis must be considered in the differential diagnosis of a neonatal surgical emergency.

Placental mesenchymal dysplasia is a rare entity, confused with ultrasound and macroscopy with partial mole due to vesicular lesions and the presence of a fetus. Microscopy reveals hydropic trunk villi with great mesenchymal hyperplasia and prominent vascular lesions but without hyperplasia of the trophoblastic epithelium. The fetus, usually female, may be normal or present malformations, tumors or chromosomopathies. We present the study of four cases of placental mesenchymal dysplasia; three first-pregnancies, aged 39 and 20, and a second-pregnancy, aged 26. The oldest in the third trimester presented with preeclampsia and a female stillbirth with pulmonary and splenic anomalies, the other two presented vaginal bleeding and pelvic pain and one case was a finding in prenatal control at 8 weeks of gestation. In three cases, fetus and embryo were observed, two of them had a necropsy.

Amniotic band syndrome is a congenital fetal abnormality characterized by fibrous bands and multiple disruptive anomalies that vary in presentation and complexity, some of which are incompatible with life. We present 18 cases of this syndrome and the associated pathology. Five newborns and 13 fetuses were examined following the standard pathological examination protocol. Nine were males and nine, females, with body weight varying from less than 100 g to 3 680 g. Cases of amniotic bands affected fingers (13 cases), limbs (5 cases), lips (6 cases), face (6 cases), head (6 cases), abdominal wall (2 cases) and umbilical cord (8 cases). Eight cases included associated malformations in heart, lungs, kidneys, gastrointestinal tract, and umbilical cord (single artery, velamentous insertion, short umbilical cord, nuchal cord). Maternal age was 17 to 41 years; 26 years in average. There were 11 pr...

Introduction: Primary extrauterine choriocarcinoma is a rare entity and it usually involves the uterine cervix. Primary choriocarcinoma of the Fallopian tube is even rarer. Its clinical presentation resembles an ectopic pregnancy. The diagnosis is made by microscopic examination. Objective: We present two cases of primary tubal choriocarcinoma. Cases presentation: The first case presents a 27-yearold nulligravida who complained of pelvic pain for 30 hours and vaginal bleeding lasting 20 days. The second case is a 34-year-old women gravida 3, para 3, who was admitted because of increasing pelvic pain for the last 3 days and sparse vaginal bleeding for 2 weeks. On examination, both patients looked pale. The hemoglobin and hematocrit levels were 7.4 g and 28 mm, respectively. In both cases, the βhCG test was positive. Ultrasound examination in both cases showed an echogenic mass in the rig...