Congenital pancreatic pseudocyst: report of two cases.

Pancreatic pseudocysts have not been reported to occur in the fetus or newborn. The authors report two cases of histologically proven pancreatic pseudocysts in neonates, which were detected using prenatal ultrasonography. Surgical management included external marsupialization followed by internal drainage in one case, and excision in the other. Both patients ultimately did well. The etiology of these lesions remains unclear.