title: Spontaneous regression of subungual keratoacanthoma with reossification of underlying distal lytic phalynx.
abstract: A 45-year-old man presented with a rapidly enlarging keratotic lesion of the distal subungual right middle finger. An X-ray of the digit revealed a well-defined cup-shaped lytic lesion of the phalynx underlying the subungual nodule. The lesion resolved spontaneously with reossification of the underlying bony defect. The clinical history and X-ray is consistent with a diagnosis of spontaneously resolving subungual keratoacanthoma.
authors.affiliation: Department of Dermatology, Sunderland Royal Hospitals, Kayll Road, Sunderland, SR4 7TP, UK. aparnalane@ntlworld.com
authors.forename: A
authors.initials: A
authors.lastname: Sinha
authors.forename: R
authors.initials: R
authors.lastname: Marsh
authors.forename: J
authors.initials: J
authors.lastname: Langtry
mesh_terms: D005385:Fingers / Q000000981:diagnostic imaging* / Q000502:physiology; D006801:Humans; D007636:Keratoacanthoma / Q000000981:diagnostic imaging* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009260:Nail Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology; D010012:Osteogenesis; D011859:Radiography; D012075:Remission, Spontaneous