Correlation Between Preoperative Magnetic Resonance Imaging and Surgical Margins with Modified Mohs for Dermatofibrosarcoma Protuberans

BACKGROUND
Dermatofibrosarcoma protuberans (DFSP) is characterized by asymmetrical and poorly defined growth. Magnetic resonance imaging (MRI) has been proposed for the delimitation of this tumor.


OBJECTIVES
To study the utility of MRI in evaluating the depth of infiltration in DFSP and to compare the efficiency of clinical palpation with that of MRI in delimiting the invasiveness of DFSP.


METHODS
Observational, prospective study of DFSP cases. The MRI scans for all cases were compared with the exact histological infiltration plane obtained using modified Mohs micrographic surgery (MMS).


RESULTS
Forty-three DFSPs were included: 22 primary, ...

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