Hidden Malignancy: Predominantly InSitu Porocarcinoma Arising in a Poroma.

Am J DermatopatholAug 20, 2026 (epub)
Case ReportDermatologyOncology (Medical)Open access

Fabio Del Carro, Giovanni Evalli, Giovanni Fellegara

✦ AI-curated · Sources linked

Case in brief

A 79-year-old woman presented with a well-circumscribed exophytic mass on her right calcaneal region, which had been enlarging over two years. Initial biopsy suggested an eccrine poroma, but further histopathological analysis revealed atypical cells indicating a predominantly in situ, focally invasive porocarcinoma. Following electrocautery and negative pelvic node examination, the patient remained free of recurrence at six months.

Diagnostic / clinical pearl

This case highlights that benign-appearing eccrine poromas can contain foci of malignant transformation, necessitating thorough histopathological evaluation.

Source

PubMed · PMID 42658040Free full text on PubMed Central

Published in Am J Dermatopathol. This summary was written by xxcode from the publication's abstract and metadata. It is not peer reviewed and is not a substitute for the original article. For clinical decisions, review the original publication.

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