Cutaneous B-cell lymphoma mimicking a keloid: Dermoscopy-assisted diagnosis

Abstract

Primary cutaneous lymphomas are lymphoproliferative disorders having multiple heterogenous subtypes with a primary cutaneous manifestation in the absence of systemic involvement of the lymph nodes, bone marrow, or visceral organs at the time of diagnosis. Herein, we report the case of a 75-year-old male who presented with a single plaque on the back mimicking a keloid. Clinical and dermoscopic examinations led to the suspicion of a cutaneous malignancy, while histopathology and IHC confirmed a primary cutaneous B-cell non-Hodgkin’s lymphoma. The lesion responded well to a R-CHOP chemotherapy regimen.