🧬 SyndromeScope
Syndrome reference sheet
Generated 12 Oct 2026
Urology · Urology / Pediatric urology Megacystis-microcolon-intestinal hypoperistalsis syndrome
Also known as: MMIHS
Congenital bladder distension with intestinal dysmotility.
- Medical specialty
- Urology
- Subspecialty
- Urology / Pediatric urology
- Sex & age distribution
- Male: affected; Female: affected, female predominance; Children: yes, neonatal
- Gene(s) involved
- ACTG2, LMOD1, MYH11, MYLK
Etiology & mechanism
Visceral smooth muscle failure.
Gene(s) involved (4)
ACTG2LMOD1MYH11MYLK
Symptoms & signs (5)
hydronephrosisintestinal hypoperistalsismegacystismicrocolonvomiting