Mycosis fungoides with pseudocarcinomatous hyperplasia masquerading as verrucous carcinoma

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.