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  • Title: Undifferentiated pleomorphic sarcoma: indolent, tail-like recurrence of a high-grade tumor.
    Author: Alpert JS, Boland P, Hameed M, Panicek DM.
    Journal: Skeletal Radiol; 2018 Jan; 47(1):141-144. PubMed ID: 28932893.
    Abstract:
    Recurrence of a soft tissue sarcoma typically manifests as a round or oval mass at imaging, and recurrent high-grade soft tissue sarcomas generally enlarge relatively rapidly. We present a case of high-grade undifferentiated pleomorphic sarcoma in the calf of a 48-year-old male that recurred as a thin, curvilinear "tail" of enhancing tissue at magnetic resonance imaging (MRI), with extremely indolent growth over a 7-year period. The unusual imaging finding of a slowly enlarging "tail" should not be dismissed as postoperative changes, even for a high-grade soft tissue sarcoma.
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