Sorafenib-induced erythema multiforme in metastatic renal cell carcinoma.

Sorafenib is a new therapeutic agent being used in metastatic renal cell carcinoma, hepatocellular carcinoma, and malignant melanoma. The most frequently seen cutaneous side effects due to sorafenib are erythema, exfoliative dermatitis, acne vulgaris, and flushing. Folliculitis, eczema, and erythema multiforme are other, rare side effects of sorafenib. A 59-year-old man underwent left radical nephrectomy due to renal cell carcinoma 8 months ago, and after the operation he received immunochemotherapy and then sorafenib. On the third day of sorafenib therapy his lesions occurred. His dermatologic examination revealed multiple erythematous papules on his neck, arms, and legs and bullae and iris lesions on his palms and soles. He was diagnosed as having erythema multiforme. In the literature we found only 1 other erythema multiforme case due to sorafenib. We present this interesting case to show and discuss cutaneous side effects of sorafenib, especially erythema multiforme as a very rare cutaneous side effect.