Pink verrucous plaque in a man with systemic mastocytosis

Jessica R. Terrell, Jennifer R. Urban, Maxwell A. Fung, Danielle M. Tartar, Maija Kiuru

Research output: Contribution to journalArticlepeer-review


Porokeratosis ptychotropica is a rare and commonly misdiagnosed subtype of porokeratosis involving the body folds. We present a 53-year-old man with systemic mastocytosis who presented with a pruritic, verrucous plaque in the gluteal fold that showed multiple cornoid lamellae on histopathologic evaluation, diagnostic of porokeratosis ptychotropica. Various treatments have been reported, including topical corticosteroids, retinoids, vitamin D analogs, calcineurin inhibitors, imiquimod, phototherapy, cryotherapy, or ablative laser therapy, but recurrences are common.

Original languageEnglish (US)
JournalDermatology online journal
Issue number10
StatePublished - Oct 15 2019

ASJC Scopus subject areas

  • Dermatology


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