In this section we have Logan's cases since June 2010, now over 4000! You can review the archived cases and read the suggested diagnoses by users and the final comment by the contributors.

Hidroacanthoma simplex (epidermal variant of poroma)

By Operations Pathhub

August 30

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Case 67 Sept 2010 (P. McKee) – good Borst-Jadassohn phenomenon

Case 356 Oct 2011 (P. McKee) F 36 plaque lower leg

Nice Borst-Jadassohn phenomenon. I thought clonal seb wart, but others thought the cells looked “poroid”, rather than the clear nests in clonal seborrhoeic wart. Also ducts were seen elsewhere in the specimen.

DD: clonal Bowen’s – shows atypia. Check with p16 and p53.

Case 868 16.10.13 (H. Diwan) M 40 thigh lesion

Discussion on variants of poroma: epidermal – hidroacanthoma simplex; poroma – dermo-epidermal; dermal duct tumour (Winkelmann-McLeod) dermal variant.