Dermatofibrosarcoma protuberans with fibrosarcomatous transformation: our experience, molecular evaluation of selected cases, and short literature review.

Dermatofibrosarcoma protuberans with fibrosarcomatous transformation (DFSP-FS) is a higher grade tumor arising from dermatofibrosarcoma protuberans (DFSP). Recent literature highlights its impact on recurrence rates, metastatic rates, and survival. In this article, we aim to describe our experience with 13 cases of DFSP-FS in terms of pathologic findings, molecular alterations, clinical outcomes, management, and also perform a short recent literature review.