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Determination of effectiveness of chemotherapy confirmed by contrast-enhanced CT findings. (A) The first medical examination (yellow arrows: primary tumor and tumor thrombus tip). (B) After completion of the second course of pembrolizumab (yellow arrows: primary tumor and tumor thrombus tip). (C) After completion of the third course of pembrolizumab (yellow arrows: primary tumor and tumor thrombus tip). CT, computed tomography.
