title: A keratoacanthoma with venous invasion.
abstract: Keratoacanthomas are variously regarded as a self-limiting variant of squamous cell carcinoma or as a distinct benign lesion and they very seldom show attributes normally associated with malignant behaviour, such as perineural invasion. Herein we report the case of a keratoacanthoma with venous invasion proven by immunoperoxidase and elastic tissue stains.
authors.affiliation: Department of Dermatology, Medical University of Vienna, Austria.
authors.forename: Philipp
authors.initials: P
authors.lastname: Tschandl
authors.forename: Cliff
authors.initials: C
authors.lastname: Rosendahl
authors.forename: Richard
authors.initials: R
authors.lastname: Williamson
authors.forename: David
authors.initials: D
authors.lastname: Weedon
keywords: dermatoscopy; dermoscopy dermatopathology; keratoacanthoma; squamous cell carcinoma; venous invasion