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Dermatol Online J. 2016 Oct 15;22(10). pii: 13030/qt66f7b8wt.

Giant subungual glomus tumor: clinical, dermoscopy, imagiologic and surgery details.

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Centro Dermatologia Epidermis, Instituto CUF, Porto, Portugal.


Glomus tumor is a rare benign vascular hamartoma derived from the modified smooth muscle cells of the glomus body. Paroxysmal pain is the leading symptom. A 78-year-old woman presented at our clinic with a 50-year history of a slow growing painful purple blue tender nodule under the right fourth finger nail. Dermoscopy and magnetic ressonance confirmed the presence of a large subungual tumor and total surgical excision was performed after partial nail plate avulsion. Histologic examination confirmed a glomus tumor. After 1 year of follow-up, the nail grew with normal shape and neither complications nor recurrence were observed.

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