Makis William, Ciarallo Anthony, Novales-Diaz Javier-A, Lisbona Robert
Department of Nuclear Medicine, Brandon Regional Health Centre, 150 McTavish Ave E, Brandon, MB R7A 2B3 Canada.
Department of Nuclear Medicine, Royal Victoria Hospital, McGill University Health Centre, 687 Pine Ave West, Floor M2, Montreal, Quebec H3A 1A1 Canada.
Nucl Med Mol Imaging. 2011 Dec;45(4):308-13. doi: 10.1007/s13139-011-0090-z. Epub 2011 Jul 13.
Bilateral renal masses are uncommon but can raise a strong suspicion of primary or secondary malignancy, especially during the initial work-up of an oncology patient. Renal oncocytomas are benign renal tumors that are commonly discovered incidentally on diagnostic imaging with a small percentage occurring bilaterally. Although (18)F-FDG uptake in renal oncocytomas has been described, a case of a bilateral (18)F-FDG-avid renal oncocytoma has not been previously reported in the literature. A variety of malignant causes of bilateral (18)F-FDG positive renal masses are known, however it is important to include this benign etiology in the differential diagnosis. We report an unusual case of an incidental bilateral renal oncocytoma evaluated with contrast enhanced CT and (18)F-FDG PET/CT.
双侧肾肿块并不常见，但强烈怀疑为原发性或继发性恶性肿瘤，尤其是在肿瘤患者的初始检查期间。肾嗜酸细胞瘤是一种良性肾肿瘤，通常在诊断性影像学检查时偶然发现，少数为双侧发生。虽然已有文献描述肾嗜酸细胞瘤摄取（18）F-FDG，但双侧（18）F-FDG摄取阳性的肾嗜酸细胞瘤病例此前尚未见报道。已知多种双侧（18）F-FDG阳性肾肿块的恶性病因，但在鉴别诊断中纳入这种良性病因很重要。我们报告一例罕见的偶然发现的双侧肾嗜酸细胞瘤病例，该病例接受了对比增强CT和（18）F-FDG PET/CT检查。
