Subungual schwannoma: a rare location.
BACKGROUND
Schwannoma is a benign tumor of neural tissue and usually develops in deeper soft tissue. Cutaneous involvement is uncommon, and a subungual location is extremely rare. In fact, it has not been previously reported.


OBJECTIVE
To present a case of subungual schwannoma.


METHODS
A 49-year-old man had a subungual tumor on his right thumb of 8 years duration. The lesion caused a mild stinging sensation in winter and grew slowly. The tumor was excised using a transungual approach. After closure, the wound was dressed with a trimmed original nail plate.


RESULTS
The nail plate grew normally, and there was no recurrence 1 year postoperatively.


CONCLUSIONS
We describe a case of schwannoma that developed in the subungual area of a thumb. Although schwannoma rarely develops in this area, it should be considered in the differential diagnosis of subungual tumor.
Moon
Sang Eun
SE
Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea. semoon@snu.ac.kr
Cho
Young Joon
YJ
Kwon
Oh Sang
OS
D001859:Bone Neoplasms / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D009264:Nails, Malformed / Q000209:etiology* / Q000473:pathology; D009442:Neurilemmoma / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D011859:Radiography