MMIH Syndrome

**Semantic type:** Disease or Syndrome

**Definition:** A rare syndrome characterized by the presence of an enlarged and weak bladder (megacystis), a very small large intestine (microcolon), and weak small intestine that does not function properly (hypoperistalsis). It is caused by a disorder of the smooth muscles of the abdomen and gastrointestinal tract.

**Synonyms:** - Megacystis, Microcolon, Hypoperistalsis Syndrome - Megacystis, Microcolon, Intestinal Hypoperistalsis Syndrome - Megacystis, Microcolon, Intestinal Hypoperistalsis Syndrome