title: Neglected microcystic adnexal carcinoma: the second reported case in a black patient.
abstract: BACKGROUND
  Microcystic adnexal carcinoma (MAC) is a histologically aggressive appendageal neoplasm that often pursues a beguilingly indolent clinical course. MAC has previously been reported only once in a black patient.
  
  
  OBJECTIVE
  To present the second MAC ever recorded in a black patient.
  
  
  METHODS
  We describe a MAC of substantial dimension occurring in a black patient. The literature was subsequently examined for MAC occurring in ethnic patients.
  
  
  RESULTS
  This MAC is remarkable not only for its occurrence in a black patient, but also because it is one of the largest MACs ever recorded (8 cm), it occurs in a relatively less common site (scalp), and its latency period before diagnosis is the longest ever definitively documented (31 years).
  
  
  CONCLUSIONS
  MAC is rare among non-Caucasians. Its relatively indolent clinical growth, especially in sites that are poorly accessible to patient observation, may lead to significant delay in diagnosis and treatment.
authors.affiliation: DermSurgery Associates, P.A., Houston, Texas 77030, USA.
authors.forename: E S
authors.initials: ES
authors.lastname: Gardner
authors.forename: L H
authors.initials: LH
authors.lastname: Goldberg
mesh_terms: D018280:Carcinoma, Skin Appendage / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D012535:Scalp; D012871:Skin Diseases / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*