Sporotrichosis presenting as pyoderma gangrenosum.

A 56-year-old female with an eight-year history of corticosteroid therapy for rheumatoid arthritis presented with large, deep, painful ulcers on the left buttock and thigh. The lesions appeared typical of pyoderma gangrenosum. Nine separate cultures of the exudate grew Sporothrix schenckii. During the course of iodide therapy, the patient expired due to Escherichia coli pneumonia. This is the third case report of sporotrichosis presenting as pyoderma gangrenosum and the first report from China. Sporotrichosis presenting as pyoderma gangrenosum is a special form of this disease. It develops quickly and must be treated promptly. Only two cases have been reported in the world literature. This is the first case reported from China.