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  • Title: Undifferentiated embryonal sarcoma of the liver treated with chemotherapy: CT imaging in four patients.
    Author: Moon WK, Kim WS, Choi BI, Kim IO, Yeon KM, Han MC.
    Journal: Abdom Imaging; 1995; 20(2):133-7. PubMed ID: 7787716.
    Abstract:
    BACKGROUND: The purpose of this study was to describe the computed tomography (CT) findings of undifferentiated embryonal sarcoma after chemotherapy and to correlate the CT imaging findings with pathologic findings. METHODS: Ten CT images obtained before and after chemotherapy in four patients with hepatic undifferentiated embryonal sarcoma were retrospectively reviewed and correlated with pathologic findings. RESULTS: After chemotherapy, tumor volume decreased by 50-90% and initially nonresectable tumor or gross residual tumor was successfully excised in three patients. In all patients, enhancing peripheral solid portions and septations changed to low-attenuation areas, and in three patients increased or de novo calcifications were found at the periphery of the tumor. Resected pathologic specimen after chemotherapy showed well-encapsulated masses with central necrosis, fibrosis, and dystrophic calcifications. CONCLUSIONS: These CT findings will be useful in monitoring the treatment response of hepatic undifferentiated embryonal sarcoma during chemotherapy.
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