1. Department of Medical Imaging Center, the Affiliated Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; 2. Sun Yat-sen University Cancer Center, Guangzhou 510060, China
Abstract：Objective: To discuss the MRI features of dermatofibrosarcoma protuberans(DFSP). Methods: MRI features in 6 pathologically confirmed DFSP were analyzed. The 6 patients included 1 female and 5 males, age ranged from 21 to 76 years, with a mean age of 56 years. MR imaging was performed in all the 6 patients, with gadolinium-enhanced scan in four patients. Results: All of the 6 lesions located in subcutaneous region. Three of them located in trunk and 3 in extremities. Four of the 6 tumors demonstrated as round or oval soft tissues with clearly defined margin. One of the 6 tumors appeared as a lobulated mass, and the other one presented as an irregular mass with relatively unclear margin. On T1WI, three tumors were isointense to skeletal muscle, and the other three showed slightly hyperintense to skeletal muscle. On fat-saturation T2WI（T2WI fs）, all of the tumors were slightly heterogenous hyperintense signal, with some strip-like or patchy areas of hypointensity in the masses. After intravenous injection of Gd-DTPA, all the masses enhanced remarkably, 4 cases showed various weakly enhanced regions. Conclusion: DFSP had some specific MRI features. MRI plays an important role in the accurate preoperative assessment and detection of tumor recurrence.
2012, Vol. 23 
