Neonate with Congenital Duodenal Obstruction and Ectopic Hepatic Parenchyma.

The presence of hepatic parenchyma at ectopic locations is infrequently reported in neonatal age. A male neonate presented with clinical signs and symptoms of duodenal obstruction. At exploration, an annular pancreas was found as the causative factor and he underwent a Kimura's duodeno-duodenostomy. A pedicled cyst was attached to the stomach's greater curvature, was excised, and histologically was a mesothelial-lined cyst with ectopic liver, complete with bile ducts, in the cyst wall. Ectopic liver tissue may be clinically silent and found within the wall of a mesothelial cyst. Long-term complications of this ectopic tissue are not known.