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We evaluated the outcome of children with ovarian mass operated on at our Center over an 8-year period. Thirty-four girls aged 1 day to 17 years were included in the study. Mean duration of follow-up was 39.5 months. Eighteen had a nonneoplastic mass and 16 a neoplastic mass, eight of which were malignant. Patients with a malignant tumor underwent adnexectomy of the affected side and appendectomy, without removal of the uterus or the other ovary and without partial omentectomy; only the one girl with bilateral malignant disease had bilateral adnexectomy. Five of the eight patients with malignant disease received chemotherapy. All patients are alive with no evidence of disease. Pediatric ovarian masses are rare but have a relatively high rate of malignancy. They differ from adult malignant tumors in many aspects. Conservative surgery should be applied to preserve fertility and combined, if necessary, with aggressive chemotherapy. A good prognosis may be expected in most cases, even with progressive disease.

Congenital defect of the muscular layer of the small intestine is a rare cause of spontaneous bowel perforation in premature infants. During the last 12 years we have observed four similar cases. We describe the most recent one, a premature infant who developed two abdominal events. On her 2nd day of life, spontaneous perforation of the distal ileum due to focal absence of the muscular layer occurred. Several weeks later she developed the typical clinical and histological picture of necrotizing enterocolitis. The clinical and histological characteristics of the two different conditions are compared, and the 24 cases reported in the literature are discussed. We conclude that focal absence of intestinal musculature may be not such a rare entity as is commonly believed.