Eccrine Porocarcinoma in a patient with Schöpf–Schulz–Passarge syndrome

Abstract

Histological analysis of the lesion proved to be challenging. An initial punch biopsy showed an ulcerated tumour comprised of islands of monomorphic cells with duct formation pushed deep into the dermis, and a lace‐like pattern of infiltration. At this point a diagnosis of eccrine porocarcinoma was favoured over poroma due to the presence of desmoplastic response and focal infiltrative growth pattern.

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