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

Tracking symptoms like this for someone? Eleplan keeps symptoms, diagnoses, medications and every specialist in one plan.

Start free with Eleplan

This 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.