Mycosis fungoides with pseudocarcinomatous hyperplasia masquerading as verrucous carcinoma

Y Saeki(Chiba University), Hideaki Miyachi(Chiba University), Keiko Miura(Tokyo Medical and Dental University Hospital), Daijiro Okazaki(Asahi General Hospital), Makoto Yamamoto(Chiba University), Yumika Yuki(Asahi General Hospital), Michiyo Nakano(Asahi General Hospital)
JAAD Case Reports
July 19, 2023
Cited by 1Open Access
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Abstract

Mycosis fungoides (MF), the most common type of cutaneous T-cell lymphoma (CTCL), presents with various clinical and histopathological manifestations. When associated with pseudocarcinomatous hyperplasia (PCH), marked keratinization and verrucous lesions that mimic verrucous carcinoma (VC) can appear. Reports of PCH associated with MF are scarce and misdiagnosis as VC or squamous cell carcinoma (SCC) can occur.1 We present a case of MF with PCH that required a reevaluation of the initial diagnosis.


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