title: Ulceration of the lip associated with a 'calibre-persistent artery'.
abstract: A case of ulceration of the lower lip, associated with a 'calibre-persistent artery', is presented. The lesion was diagnosed clinically as squamous cell carcinoma and excised accordingly. 'Calibre-persistent artery' is not a widely known entity, has not been described previously in the dermatological literature and should be sought in any lip ulcer of obscure aetiology.
mesh_terms: D000368:Aged; D001158:Arteries / Q000002:abnormalities; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008046:Lip / Q000098:blood supply*; D008047:Lip Diseases / Q000175:diagnosis / Q000209:etiology*; D008048:Lip Neoplasms / Q000175:diagnosis; D012883:Skin Ulcer / Q000175:diagnosis / Q000209:etiology*