Thibault Kervarrec, Daniel Pissaloux, Sandrine Paindavoine, Franck Tirode, Amélie Osio, Samia Mourah, Fanélie Jouenne, Pierre Sohier, Eduardo Calonje, Agnes Pekar, Evelyn Vanesa Erazo Luna, Keisuke Goto, Flore Delalande, Eric Frouin, Nicolas Macagno, Françoise Drouot, Monique Faisan, Bernard Cribier, Maxime Battistella, Arnaud de la Fouchardière
AIMS: Poroma is a benign adnexal neoplasm with differentiation towards the upper portion of the sweat gland apparatus. In 2019, Sekine et al. demonstrated recurrent YAP1::MAML2 and YAP1::NUTM1 fusion in poroma and porocarcinoma. Follicular, sebaceous and/or apocrine differentiation has been reported in rare cases of poroma and whether these tumours constitute a variant of poroma or represent a distinctive tumour is a matter to debate. Herein we describe the clinical, immunophenotypic, and molecular features of 13 cases of poroma with folliculo-sebaceous differentiation...
May 18, 2023: Histopathology