Heterotopic brain tissue in the sacrococcygeal region.

Computerised tomography (CT) of pelvis and buttocks revealed a large mass with an irregular outline, measuring 7 cm × 4.3 cm. The lesion contained a few areas of calcification and nonenhancing cystic areas. A lower sacral spina bifida was also noted. There was a soft tissue component within the spinal canal of the lower sacral segment. The bladder was compressed upwards by the lesion (Figure 1). Serum alpha fetoprotein level of the baby was 31,037.0 IU/ml or 37,393.98 ng/ml (reference value for term neonates 34,600.21 IU/ml or 41,687 ng/ml). Heterotopic brain tissue in the sacrococcygeal region