Abstract：
UNASSIGNED: Renal oncocytosis is a very rare oncologically indolent form of renal neoplasia characterized by diffuse involvement of renal parenchyma by numerous oncocytic nodules. We describe contrast-enhanced CT and 99m Tc-MIBI SPECT/CT findings in a patient with renal oncocytosis presenting with metachronous bilateral renal tumors. Contrast-enhanced CT showed numerous tumors ranging from several millimeters up to 3.9 cm in the left kidney. The tumors showed hypervascularity in the corticomedullary phase and washout in the excretory phase mimicking renal cell carcinoma. The larger tumors showed higher 99m Tc-MIBI uptake than the adjacent renal parenchyma, suggesting renal oncocytoma confirmed by biopsy.
摘要：
■肾嗜酸细胞病是一种非常罕见的肿瘤惰性形式的肾肿瘤，其特征是许多嗜酸细胞结节弥漫性累及肾实质。我们描述了表现为异时双侧肾脏肿瘤的肾癌细胞增多症患者的对比增强CT和99mTc-MIBISPECT/CT表现。对比增强CT显示，左肾中有许多肿瘤，范围从几毫米到3.9厘米。肿瘤在皮质髓质期表现出血管过多，在排泄期表现出模仿肾细胞癌的冲洗。较大的肿瘤显示99mTc-MIBI摄取高于邻近的肾实质，提示肾嗜酸细胞瘤活检证实。
