Multiple eruptive dermatofibromas masquerading as cutaneous lymphoma

Abstract

A 34-year-old male came with complaints of multiple firms to hard nontender, nonitchy nodules, measuring 2 cm × 2 cm to 1 cm × 1.5 cm, present predominantly over the lower limbs. This condition started 5 years back as a single nodule over the thigh but gradually increased in number and size with time to involve both lower limbs. A differential diagnosis of cutaneous lymphoma and dermatofibroma was considered. He underwent a biopsy and immunohistochemistry for the same which were consistent with hemosiderotic histiocytoma and positive for vimentin. The patient was advised surgical excision for the same. The occurrence of multiple dermatofibromas although rare has been reported in a few case reports; however, the occurrence of multiple dermatofibromas of the hemosiderotic variant has not been documented yet.

Keywords

• Hemosiderotic dermatofibroma
• histiocytoma
• vimentin