hereditary disease obsolete megacystis-microcolon-intestinal hypoperistalsis syndrome familial visceral myopathy https://www.malacards.org/card/actg2_visceral_myopathy icd11.foundation:1838806574 A rare hereditary myopathic degeneration of both gastrointestinal and urinary tracts that causes chronic intestinal pseudo-obstruction. It usually presents after the first decade of life with megaduodenum, megacystis and symptoms such as abdominal distension and/or pain, vomiting, constipation, diarrhea, dysphagia, and/or urinary tract infections.n. Orphanet:2604 familial hollow visceral myopathy SCTID:63684002 MONDO:0016829 visceral myopathy familial GARD:0003443 UMLS:C0266833 ICD9:359.89 pseudoobstruction idiopathic intestinal MEDGEN:120590 megaduodenum and/or megacystis OMIMPS:155310 hereditary hollow visceral myopathy intestinal motility disease