Smith Christopher J, Wang Mindy X, Feely Michael, Otto Brandon, Grajo Joseph R
Department of Radiology, UF Health Shands Hospital, Gainesville, FL, USA.
Department of Pathology, UF Health Shands Hospital, Gainesville, FL, USA.
J Radiol Case Rep. 2017 May 31;11(5):27-33. doi: 10.3941/jrcr.v11i5.3117. eCollection 2017 May.
Renal oncocytoma is a benign renal neoplasm that is often discovered incidentally and closely mimics renal cell carcinoma on common imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI). Due to the inability to reliably distinguish between these benign and malignant lesions with imaging, both are typically treated as if they are malignant. Hypermetabolic activity of renal oncocytomas is not frequently encountered because positron emission tomography (PET) is not a standard modality for imaging primary renal tumors. We present a case of a 65 year-old female with a history of thyroid cancer who had an incidentally discovered hypermetabolic renal mass on surveillance PET-CT imaging. Due to the concern for a primary renal malignancy or metastatic disease, the mass was resected and proven to be an oncocytoma on pathologic review.
肾嗜酸细胞瘤是一种良性肾肿瘤，常为偶然发现，在计算机断层扫描（CT）和磁共振成像（MRI）等常见影像学检查中与肾细胞癌极为相似。由于影像学检查无法可靠地区分这些良性和恶性病变，两者通常都按恶性肿瘤进行治疗。肾嗜酸细胞瘤的高代谢活性并不常见，因为正电子发射断层扫描（PET）并非原发性肾肿瘤的标准成像方式。我们报告一例65岁女性，有甲状腺癌病史，在PET-CT监测成像中偶然发现一个高代谢性肾肿物。由于担心原发性肾恶性肿瘤或转移性疾病，该肿物被切除，病理检查证实为嗜酸细胞瘤。
