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  • Title: Hemorrhage simulating tumor growth in malignant fibrous histiocytoma at MR imaging.
    Author: Panicek DM, Casper ES, Brennan MF, Hajdu SI, Heelan RT.
    Journal: Radiology; 1991 Nov; 181(2):398-400. PubMed ID: 1656483.
    Abstract:
    During the course of preoperative chemotherapy for treatment of malignant fibrous histiocytoma of the lower extremity, the mass in three patients was found to be enlarged at physical examination. Magnetic resonance (MR) imaging demonstrated, and subsequent pathologic examination of resected specimens proved, that the enlargement was caused by extensive hemorrhage within the masses, rather than by tumor growth. MR imaging can demonstrate this phenomenon well, particularly on T1-weighted images.
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