title: Non-Healing Perianal Ulcers in a Healthy Elderly Male: An Unusual Case of Perforating Dermatosis.
abstract: BACKGROUND
  Perforating dermatoses are a rare group of dermatologic conditions characterized by transepidermal elimination of dermal material that can be primary or acquired secondary to systemic disease.
  
  
  OBJECTIVE
  We present an atypical case of perforating dermatosis resembling elastosis perforans serpiginosa (EPS) presenting with perianal ulcers in an elderly male with no systemic disease or medications and outline his successful treatment course.
  
  
  CONCLUSIONS
  Perianal ulcers in an otherwise healthy individual is an unusual presentation for perforating disorders but should be considered in cases not responding to traditional treatment options.
authors.affiliation: 1 Dalhousie University, Halifax, Nova Scotia, Canada.
authors.forename: Alia
authors.initials: A
authors.lastname: Cloutier-Bosworth
authors.affiliation: 2 University of Calgary, Calgary, Alberta, Canada.
authors.forename: Karen
authors.initials: K
authors.lastname: Naert
authors.affiliation: 3 University of Ottawa, Ontario, Canada.
authors.forename: Carly
authors.initials: C
authors.lastname: Kirshen
mesh_terms: D000368:Aged; D002081:Buttocks / Q000473:pathology*; D006801:Humans; D015474:Isotretinoin / Q000627:therapeutic use*; D008297:Male; D012871:Skin Diseases / Q000175:diagnosis / Q000188:drug therapy / Q000473:pathology; D014456:Ulcer / Q000175:diagnosis / Q000188:drug therapy / Q000473:pathology
chemical_list: D015474:Isotretinoin
keywords: acquired perforating dermatosis; case report; isotretinoin; perforating elastosis; perianal ulcers