Cutaneous Extramedullary Plasmacytoma
Chii-Shyan Lai, Kao-Chia Yang
Dermatol Sinica 17: 225-230. 1999

Extramedullary plasmacytoma (EMP) is found in about 70% of multiple myeloma patients, but cutaneous extramedullary plasmacytoma (CEMP) is quite rare. The appearance of CEMP is considered a bad prognostic sign with poor rate of survival. We describe a case of 65-year-old woman with multiple myeloma diagnosed in November 1996. She received chemotherapy and palliative radiotherapy. Unfortunately, 21 months later, scattered firm, violaceous-red, variably sized nodules with 1 to 3 cm in diameter were noted over her scalp, trunk, and extremities. Skin biopsy was performed and histopathology was consistent with CEMP. We report this rare case and review the literature.