title: Mohs' micrographic surgery of a proliferating trichilemmal tumor in a young black man.
abstract: BACKGROUND
  Proliferating trichilemmal tumor is an uncommon tumor of the follicular isthmus of the hair follicle. It usually presents as a solitary nodule on the scalp of older white women. Although these lesions typically behave in a benign fashion, recurrences and metastasis after local excision have been reported. Mohs' micrographic surgery has been effectively used to treat adnexal neoplasms.
  
  
  OBJECTIVE
  To report a case of a proliferating trichilemmal tumor in a young black man, which was excised using Mohs' micrographic surgery.
  
  
  METHODS
  Case report and review of the literature.
  
  
  RESULTS
  Mohs' micrographic surgery demonstrated an irregular extension of the tumor beyond a 1 cm surgical margin.
  
  
  CONCLUSIONS
  Proliferating trichilemmal tumors should be considered in the differential diagnosis of cutaneous neoplasms on the scalp in persons of any age (with the possible exception of infants and children), sex, or race. Mohs' micrographic surgery may be considered an optimal treatment option for proliferating trichilemmal tumors because these lesions may have an infiltrative component that may not be clinically apparent.
authors.affiliation: Division of Dermatology, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.
authors.forename: Emily
authors.initials: E
authors.lastname: Tierney
authors.forename: Maria-Teresa
authors.initials: MT
authors.lastname: Ochoa
authors.forename: George
authors.initials: G
authors.lastname: Rudkin
authors.forename: Teresa T
authors.initials: TT
authors.lastname: Soriano
mesh_terms: D000328:Adult; D006201:Hair Diseases / Q000473:pathology / Q000601:surgery*; D018859:Hair Follicle; D006258:Head and Neck Neoplasms / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008297:Male; D015580:Mohs Surgery; D012878:Skin Neoplasms / Q000473:pathology / Q000601:surgery*