Mixed tumor of skin (chondroid syringoma) is a rare skin tumor.
We report on the rare occasion of an atypical mixed tumor of skin (chondroid syringoma) in a 71-year old Caucasian male patient.
The tumor presented as a firm subcutaneous nodule on his flank. Histopathologic investigations revealed a focally increased proliferative activity and satellites in the adipose tissue. This is in accordance with the diagnosis of an atypical chondroid syringoma. The differential diagnosis to malignant chondroid syringoma is discussed. The tumor was removed by delayed Mohs surgery.
Atypical chondroid syringoma is a very rare subtype of mixed tumor of skin. It is an important differential diagnosis to malignant chondroid syringoma of skin.