[Cysts in retroauricular infundibulopapillary plaques].

Two female patients, with similar clinical characteristics, having as only dermatological manifestation large retroauricular plaques, on their surface could be seen many keratinic follicular cysts with an unspecific lichenoid inflammatory reaction. This entity is studied according to the revised bibliography, reaching the conclusion that they are real infundibulo-pilous cysts in plaques, with a very peculiar localisation, which are not red lichen planus. The authors think that this affection should be considered as an autonomous anatomo-clinical entity.