An unusual presentation of primary cutaneous follicle center lymphoma.

Primary cutaneous follicle center lymphoma (PCFCL) is a rare low-grade cutaneous B-cell lymphoma. Clinically, PCFCL is usually an erythematous subcutaneous nodule or an infiltrated plaque. The dermoscopy is non-specific and it is characterized by polymorphous vascular pattern, arborizing vessels over a salmon-colored background and white areas. We reported a case of a 36-year-old woman presented with a rapidly growing, flashed-color, exophytic, soft consistency nodule on her scalp. Dermoscopy showed a diffuse structureless, skin-color area associated with a rare arborizing vascular pattern and brown circles. We reported a peculiar clinical and dermoscopic variant. This clinical presentation of PCFCL is unusual and represents a pitfall in the early clinical diagnosis. Histopathology is mandatory for a correct diagnosis.