A 69-year-old man living with HIV presented with a tiny, glistening pink papule on the shoulder with nonspecific dermoscopy, but histology revealed a poroid hidradenoma, the rarest poroid neoplasm. This image highlights the subtle clinical and dermoscopic clues to this adnexal tumour and underscores the need for histological assessment and complete excision of changing papules in patients who are immunocompromised.
Shanshal et al. (Tue,) studied this question.