title: Subungual schwannoma: a rare location.
abstract: 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.
authors.affiliation: Department of Dermatology, Seoul National University College of Medicine, Seoul, Korea. semoon@snu.ac.kr
authors.forename: Sang Eun
authors.initials: SE
authors.lastname: Moon
authors.forename: Young Joon
authors.initials: YJ
authors.lastname: Cho
authors.forename: Oh Sang
authors.initials: OS
authors.lastname: Kwon
mesh_terms: 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