患者男,56岁,外院CT平扫检查提示左肾占位性病变,考虑为肾结核。CT增强示:左肾盂及内侧可见大小约为2.5 cm×3.8 cm的低密度无强化影,其内侧肾皮质明显变薄,其边缘可见2枚点状钙化影(图1~3)。肉眼观:肿瘤剖面呈灰白色到灰红色。镜下:大部分细胞质丰富,呈半透明淡红色,常有核周 Male patient, 56 years old, outside the hospital CT scan examination prompted left renal space-occupying lesions, considered as renal tuberculosis. CT enhancement shows: the left renal pelvis and medial can see the size of about 2.5 cm × 3.8 cm low-density non-enhanced shadow, the medial renal cortex was significantly thinned, the edge of the visible 2 punctate calcification (Figure 1-3). Macroscopic view: the tumor profile is gray to gray-red. Microscope: most of the cytoplasm is rich, translucent pink, often perinuclear weeks