title: Photo quiz. Painful perianal lesions.
authors: Madigan Army Medical Center, Department of Family Medicine, Tacoma, Washington, USA. susan.opar@us.army.mil
authors: Susan P
authors: SP
authors: Opar
mesh_terms: D000328:Adult; D001003:Anal Canal / Q000473:pathology; D001004:Anus Diseases / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D003424:Crohn Disease / Q000150:complications* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D010146:Pain / Q000209:etiology*