title: Metastatic basal cell carcinoma presenting as unilateral axillary lymphadenopathy: report of a case and review of the literature.
abstract: BACKGROUND
  Although basal cell carcinoma (BCC) is one of the most common forms of cancer worldwide, the incidence of metastatic basal cell carcinoma (MBCC) is exceedingly low. Of reported cases, it is estimated that up to 85% arise in the head and neck region.
  
  
  OBJECTIVE
  Case presentation of a BCC measuring 1.1 cm arising in a nonfacial site that presented with unilateral axillary lymphadenopathy.
  
  
  METHODS
  Case presentation with literature review.
  
  
  RESULTS
  Risk factors which should lead to a higher index of suspicion among clinicians for identifying these patients include large tumor size, previous irradiation, local invasion, and recurrence. The lymph nodes, lungs, bones, and skin are among the most common sites in which metastases arise.
  
  
  CONCLUSIONS
  We report an unusual case of MBCC arising from a small, nonfacial primary BCC that presented with unilateral axillary lymphadenopathy.
authors.affiliation: Department of Dermatology, Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA.
authors.forename: Joshua M
authors.initials: JM
authors.lastname: Berlin
authors.forename: Michael R
authors.initials: MR
authors.lastname: Warner
authors.forename: Philip L
authors.initials: PL
authors.lastname: Bailin
mesh_terms: D001365:Axilla; D002280:Basal Cell Carcinoma / Q000145:classification / Q000556:secondary* / Q000601:surgery; D005260:Female; D006801:Humans; D008206:Lymphatic Diseases / Q000209:etiology; D008207:Lymphatic Metastasis; D008875:Middle Aged; D015580:Mohs Surgery; D009378:Neoplasms, Multiple Primary / Q000473:pathology / Q000601:surgery; D012307:Risk Factors; D012878:Skin Neoplasms / Q000145:classification / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome