title: [Perineural invasion in keratoacanthoma (author's transl)].
abstract: Perineural tumoral invasion, usually considered as an histological sign of malignancy, may be seen in clinically and histological typical keratoacanthoma in every phase of evolution. The authors present 8 cases, among a collection of almost 300 keratoacanthomas, localized on the face, 3 in the proliferative phase, 3 at a state of maturation and 2 in plain regression. Sometimes perineural invasion is associated with other cellular anomalies and infiltration of the muscular layers. All the lesions were chirurgically excised without recurrence after a 4 months to 3 years follow-up. Perineural tumoral invasion may be considered as an image of pseudo-malignancy.
mesh_terms: D000328:Adult; D000368:Aged; D005145:Face / Q000294:innervation / Q000473:pathology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007636:Keratoacanthoma / Q000473:pathology* / Q000601:surgery; D008297:Male; D008875:Middle Aged
vernacular_title: L'invasion périnerveuse dans le kérato-acanthome.