title: Clinical characteristics of acquired ungual fibrokeratoma.
abstract: BACKGROUND
  Acquired ungual fibrokeratomas are uncommon fibrous tissue tumors located in the ungual area. Though there are many reports of this entity, only some reports have reviewed the clinical features of the tumor.
  
  
  OBJECTIVE
  The aim of this study was to clarify the clinical characteristics of acquired ungual fibrokeratomas.
  
  
  METHODS
  We reviewed twenty patients who were treated surgically at our clinic from 2003 to 2014 for acquired ungual fibrokeratomas confirmed on histopathological examination. Our study was conducted by retrospective analysis of charts, clinical pictures and patient records. Cases of tuberous sclerosis were not included.
  
  
  RESULTS
  Acquired ungual fibrokeratomas occurred on toenails in 16 (80%) patients and on fingernails in 4 (20%) patients. Periungual lesions were noted in 15 (75%) patients followed by intraungual lesions in 4 (20%) patients and subungual lesions in 1 (5%) patient. A longitudinal groove was observed in 80% of patients. Surgical resection was performed in all cases for both medical and cosmetic reasons. After excision, recurrence occurred in three cases.
  
  
  CONCLUSIONS
  This was a retrospective study of a limited number of patients.
  
  
  CONCLUSIONS
  Acquired ungual fibrokeratomas occurred more commonly on toenails than on fingernails and were located in the periungual area in most patients. A longitudinal groove in the nail plate was a frequent finding. Surgical resection led to medical and cosmetic improvement with a recurrence in 3 (15%) patients.
authors.affiliation: Department of Dermatology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
authors.forename: Sewon
authors.initials: S
authors.lastname: Hwang
authors.affiliation: Department of Dermatology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
authors.forename: Miri
authors.initials: M
authors.lastname: Kim
authors.affiliation: Department of Dermatology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
authors.forename: Baik Kee
authors.initials: BK
authors.lastname: Cho
authors.affiliation: Department of Dermatology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
authors.forename: Hyun Jeong
authors.initials: HJ
authors.lastname: Park
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007642:Keratosis / Q000175:diagnosis* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009260:Nail Diseases / Q000175:diagnosis* / Q000601:surgery*; D012189:Retrospective Studies; D055815:Young Adult