Catalog

Subungual exostosis

No MMS code

Link to WHO Definition

Subungual exostosis – http://id.who.int/icd/entity/1059149239

Subungual exostosis presents as an acquired isolated, slow growing, benign osteochondral neoplasm arising from the distal phalanx, most commonly of the great toe, and frequently lifts the overlying nail plate. It has been linked to gene rearrangements affecting the collagen genes COL12A1 and COL4A5. It may present as a symptomless nodule but associated pain is common.