Sacrococcygeal teratoma and jejunoileal atresia: A case report

Sacrococcygeal teratomas (SCTs) and jejunoileal atresias are both rare (1 in 35,000–40,000 births and 1 in 5000 births, respectively). We present a case of a concomitant diagnosis of a cystic sacrococcygeal teratoma and a jejunoileal atresia. A twenty-week screening ultrasound identified a cystic pelvic mass (5.5 x 2.8 × 2.2 cm), dilated bowel, and mild polyhydramnios in an otherwise healthy G1P0 woman. Fetal magnetic resonance image showed a multiseptated presacral cystic mass suspicious for an internal sacrococcygeal teratoma and dilated bowel, thought to represent dilated ascending and transverse colon. Scheduled delivery at 39 weeks of gestation was uncomplicated. Postnatal ultrasound and MRI were consistent with prenatal findings. Given the rarity of both congenital anomalies and no known association between SCTs and jejunoileal atresia, the prenatal bowel dilation was thought to be due to partial obstruction secondary to the SCT. The baby thus underwent SCT resection on day-of-life 2. Ongoing obstruction after resection prompted a contrast enema which demonstrated a microcolon with reflux into the terminal ileum but no reflux into more dilated proximal loops concerning for intestinal atresia. On day-of-life 5, the baby underwent exploratory laparotomy which identified a type-2 ileal atresia, and a primary anastomosis was performed. The patient had an uneventful recovery and was discharged home on day-of-life 22. Prenatal findings of dilated bowel should prompt providers to have a high index of suspicion for jejunoileal atresia, even if other diagnoses exist.