Hirschsprung's disease and imperforate anus in a new born: unusual assocation.

The association of congenital aganglionic megacolon and imperforate anus is rare. Our patient was a male neonate who initially presented with intestinal obstruction due to imperforate anus without fistula. Intraoperative findings and colonic biopsy revealed the presence of concurrent Hirschsprung's disease (HD). A suspicision that these two disorders may coexist is mandatory for early correct diagnosis.