Meconium peritonitis is defined as aseptic chemical inflammation caused by intrauterine bowel perforation. The underlying causes of bowel perforation include intestinal atresia, midgut volvulus, intussusception, congenital bands, and meconium ileus. Siblings with prenatally diagnosed meconium peritonitis of different etiologies were found. The elder sister was born at 36 + 6 weeks gestation with a birth weight of 3110 g. She was diagnosed with meconium peritonitis caused by ileal atresia. Two years later, the younger brother was born at 34 + 3 weeks gestation with a birth weight of 2850 g. He was diagnosed with meconium peritonitis caused by midgut volvulus. Among the previously reported cases of meconium peritonitis, familial occurance of meconium peritonitis is extremely rare. We present a case of prenatally diagnosed meconium peritonitis in siblings to promote further understanding of its etiology and clinical course.

中文翻译：

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兄弟姐妹病因不同致胎粪腹膜炎：一例报告

胎粪腹膜炎定义为由子宫内肠穿孔引起的无菌化学炎症。肠穿孔的潜在原因包括肠道闭锁，肠中肠扭转，肠套叠，先天性带和胎粪肠梗阻。发现具有不同病因的产前诊断胎粪腹膜炎的兄弟姐妹。姐姐在妊娠36 + 6周时出生，出生体重3110 g。她被诊断为回肠闭锁引起的胎粪腹膜炎。两年后，弟弟在妊娠34 + 3周时出生，体重为2850 g。他被诊断患有肠中肠扭转而致胎粪性腹膜炎。在先前报道的胎粪腹膜炎病例中，极少发生家族性胎粪腹膜炎。