Abstract
The patient was a 2,910 g boy who was born at 36 weeks of gestation. After birth, anal atresia was observed and he was transferred to our hospital the following morning. There was no fistula on his perineum, and his urine was not contaminated with meconium. Abdominal X-ray showed a dilated colon at the center to the left side of the abdomen and an invertogram showed a high anal atresia; thus, we performed transverse colostomy at 1 day of age. Three months later, gastrografin was administered via the colostomy. An oral-side study showed the cecum located at the right epigastric region. An anal-side study showed a normal colon of 6 cm length and its end was blind and dilated like a pouch. When the patient was 7 months old, we performed laparoscopy-assisted abdomino-perineal anorectoplasty. On this patient, the end part of the colon stayed at a high position in the abdominal cavity, and the puborectal muscles showed hypoplasia.
