title: Mohs micrographic surgery for the treatment of hidradenocarcinoma: the Mayo Clinic experience from 1993 to 2013.
abstract: BACKGROUND
  Hidradenocarcinoma (HAC) is a rare malignant adnexal neoplasm with reported metastatic potential and undefined optimal treatment.
  
  
  OBJECTIVE
  To review clinical characteristics and outcomes of patients with HAC treated with Mohs micrographic surgery (MMS).
  
  
  METHODS
  The authors performed a retrospective chart review of patients with HAC treated by MMS at Mayo Clinic from 1993 to 2013, recording patient demographics, tumor characteristics, MMS stages to clearance, follow-up, recurrence, metastasis, and mortality.
  
  
  RESULTS
  Ten patients underwent MMS for HAC more than 20 years. The average age was 62.8 years, with 6 females and 4 males. Occipital scalp was the most common location (40%), followed by extremities (30%) and face (20%). In 5 of 7 cases (71%), "cyst" was the working clinical diagnosis. The average preoperative lesion area was 3.18 cm, with an average of 1.5 MMS stages required for clearance. Mean postoperative follow-up was 7 years (range, 5-205 months). No tumors treated with MMS recurred, metastasized, or led to disease-related mortality.
  
  
  CONCLUSIONS
  Mohs micrographic surgery seems to be a useful treatment modality for HAC. This is the largest reported series of HAC treated with MMS with long-term follow-up.
authors: *Department of Dermatology, Mayo Clinic, Rochester, Minnesota; †Division of Dermatologic Surgery, Department of Dermatology, Mayo Clinic, Rochester, Minnesota; ‡Division of Laboratory Medicine and Pathology, Department of Dermatology, Mayo Clinic, Rochester, Minnesota.
authors: Stanislav N
authors: SN
authors: Tolkachjov
authors: Thomas L
authors: TL
authors: Hocker
authors: Phillip C
authors: PC
authors: Hochwalt
authors: Michael J
authors: MJ
authors: Camilleri
authors: Christopher J
authors: CJ
authors: Arpey
authors: Jerry D
authors: JD
authors: Brewer
authors: Clark C
authors: CC
authors: Otley
authors: Randall K
authors: RK
authors: Roenigk
authors: Christian L
authors: CL
authors: Baum
mesh_terms: D018250:Acrospiroma / Q000473:pathology / Q000601:surgery*; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D015580:Mohs Surgery; D012189:Retrospective Studies; D013544:Sweat Gland Neoplasms / Q000473:pathology / Q000601:surgery*; D016896:Treatment Outcome