title: Metastatic microcystic adnexal carcinoma in an immunocompromised patient.
abstract: BACKGROUND
  Microcystic adnexal carcinoma is an uncommon, locally aggressive cutaneous neoplasm. To date, there are only two reports of histologically proven lymph node involvement with this tumor. We describe a case of a patient with microcystic adnexal carcinoma who developed multiple local metastasis in transit with histologically proven lymph node involvement and was diagnosed with chronic lymphocytic leukemia.
  
  
  OBJECTIVE
  To describe the details of our case and to review what is currently known about this tumor.
  
  
  METHODS
  Mohs micrographic surgery was utilized for tumor removal.
  
  
  RESULTS
  This patient developed multiple tumors of the scalp over the period of a 1 year which were histologically proven to be microcystic adnexal carcinoma. All tumors were noncontiguous and presented on the scalp. During the histologic analysis of the last tumor removed by Mohs micrographic surgery a lymph node was resected which revealed infiltrative microcystic adnexal carcinoma.
  
  
  CONCLUSIONS
  We present the case of an immunocompromised patient treated for microcystic adnexal carcinoma with Mohs micrographic surgery who proceeded to develop local metastasis in transit.
authors.affiliation: Department of Internal Medicine, University of Kansas Medical Center, Lawrence, Kansas, USA.
authors.forename: P
authors.initials: P
authors.lastname: Carroll
authors.forename: G D
authors.initials: GD
authors.lastname: Goldstein
authors.forename: C W
authors.initials: CW
authors.lastname: Brown
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D018280:Carcinoma, Skin Appendage / Q000473:pathology / Q000556:secondary* / Q000601:surgery; D006801:Humans; D016867:Immunocompromised Host; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000276:immunology; D008207:Lymphatic Metastasis; D008297:Male; D015580:Mohs Surgery; D012535:Scalp; D012871:Skin Diseases / Q000473:pathology* / Q000601:surgery; D012878:Skin Neoplasms / Q000473:pathology* / Q000601:surgery