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Squamous cell carcinoma is a rare, but well documented complication of chronic osteomyelitis. Many authors have recommended amputation as the treatment of choice for locally invasive disease. Presented is a patient with squamous cell carcinoma arising in the draining sinus tract of chronic osteomyelitis of the lower extremity that was treated successfully with Mohs micrographic surgery (MMS). After ten year follow-up he remains tumor free and continues to enjoy use of his leg. We propose MMS as a therapeutic option to amputation for control of locally invasive disease.

Syringoid eccrine carcinomas (SECs) are rare adnexal neoplasms that may display aggressive local recurrence and occasional metastases. This report describes three cases of SEC treated by Mohs micrographic surgery.