MICROCOLON-INTESTINAL HYPOPERISTALSIS WITHOUT MEGACYSTIS - UNCOMMON FORM OF NEONATAL INTESTINAL PSEUDOOBSTRUCTION

Two cases of microcolon-intestinal hypoperistalsis without megacystis are reported. They had dilated proximal small bowel and narrowed dista l small bowel and malrotated microcolon. No organic obstructive intest inal lesion was found and double-barrel ileostomy was performed. The b iopsy specimens showed ganglion cells to be normal in number and appea rance in the entire intestinal wall. The ileostomy did not function po stoperatively and drugs stimulating bowel movement failed to induce pe ristalsis. We have suggested that microcolon-intestinal hypoperistalsi s without megacystis may be the cause of functional intestinal obstruc tion in neonates and it is a variant of megacystis-microcolon-hypoperi stalsis syndrome.