Subungual exostosis

Subungual exostosis

Subungual exostoses are bony projections which arise from the dorsal surface of the distal phalanx, most commonly of the hallux.

Presentation

They tend to be painful due to the pressure applied to the nail bed and plate. They can involve destruction of the nail bed.cite journal |author=Suga H, Mukouda M |title=Subungual exostosis: a review of 16 cases focusing on postoperative deformity of the nail |journal=Annals of plastic surgery |volume=55 |issue=3 |pages=272–5 |year=2005 |pmid=16106166 |doi=] They are commonly osteochondromas which have identical radiographical and pathological features and never metastasize.

Subungal malignant melanomas can also occur in canines.

They are distinct from subungual osteochondroma.cite journal |author=Lee SK, Jung MS, Lee YH, Gong HS, Kim JK, Baek GH |title=Two distinctive subungual pathologies: subungual exostosis and subungual osteochondroma |journal=Foot & ankle international / American Orthopaedic Foot and Ankle Society [and] Swiss Foot and Ankle Society |volume=28 |issue=5 |pages=595–601 |year=2007 |pmid=17559767 |doi=10.3113/FAI.2007.0595]

Treatment

Surgical excision is common and is a very effective mode of treatment.

References

ee also

* exostosis


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