Rare diseases · Sign or symptom

Medial degeneration

HP:0032079

What it means

Medial degeneration of the aorta is to be used as an overarching term for any aortic surgical specimens that demonstrate one or more of the specific histopathologies mucoid extracellular matrix accumulation, elastic fiber fragmentation and/or loss, elastic fiber thinning, elastic fiber disorganization, smooth muscle cell nuclei loss, laminar medial collapse, smooth muscle cell disorganization, medial fibrosis. Grading of medial degeneration is based on the average overall severity of specific histopathologies as described, considering the worst area(s) sampled from multiple slides and aorta sections.

Part of the broader category

Medial degeneration

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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.