Rare diseases · Sign or symptom
Megacolon
HP:6000852
What it means
Persistent and substantial increase in diameter diameter and length of the colon.
In addition to Hirschspring disease, acute colonic pseudoobstruction, idiopathic megacolon, severe chronic constipation, hypothyroidism, intestinal motility disorders, and toxic Megacolon may present with this feature.
Part of the broader category
Megacolon
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.