DERMATOFIBROSARCOMA PROTUBERANS - CT FINDINGS WITH PATHOLOGICAL CORRELATION IN 6 CASES

Purpose: To characterize the CT findings of dermatofibrosarcoma protub erans. Material and Methods. CT and pathologic specimens of 6 patients with dermatofibrosarcoma protuberans (5 in the trunk and 1 in the leg ) were retrospectively reviewed. Results. CT clearly defined the tumor s in the dermis and subcutaneous tissue with a characteristic, if not pathognomonic, protrusion. On postcontrast CT, 3 tumors showed margina l enhancement and central low density, while the others showed homogen eous enhancement. Pathologically, the marginal enhancement on CT corre sponded to fibrosarcomatous changes, and the central low density to ne crosis. The tumors with homogeneous enhancement had no sarcomatous cha nges. Conclusion: CT allows detection and precise anatomic localizatio n of dermatofibrosarcoma protuberans. Marginal enhancement with centra l low density on CT may suggest a relatively poor prognosis.