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Abstract：
Renal oncocytoma is usually detected incidentally. It can be considered as a renal cell carcinoma (RCC) on preoperative imaging. They usually present as small masses and usually look like benign tumors. Giant oncocytomas are rare. A 72-year-old male patient was seen in the outpatient department for left scrotal swelling. Ultrasound (US) showed a giant mass compatible with RCC in the right kidney which was incidentally detected. Abdominal computed tomography (CT) revealed a mass with an axial diameter of 167×146 mm, compatible with RCC, a heterogeneous mass of soft tissue density with central necrosis. There was no evidence of tumor thrombus in the right renal vein or inferior vena cava. Open radical nephrectomy was performed through an anterior subcostal incision. Pathological examination revealed a 17×15 cm renal oncocytoma. The patient was discharged on the sixth day postoperatively. Clinically or radiologically, renal oncocytoma and renal cell carcinoma usually cannot be distinguished, although oncocytoma may be suspected if a central scar with fibrous extensions is seen, the so-called \"spoke-wheel appearance\". The treatment decision should be made according to the clinical aspects. Radical/partial nephrectomy or thermal ablation can be considered as treatment options. In this article, we review the literature on the radiological and pathological features of renal oncocytoma.
摘要：
肾嗜酸细胞瘤通常是偶然发现的。术前影像学上可认为是肾细胞癌(RCC)。它们通常表现为小肿块，通常看起来像良性肿瘤。巨大的嗜酸细胞瘤是罕见的。在门诊看到一名72岁的男性患者因左阴囊肿胀。超声（US）显示与右肾中的RCC相容的巨大肿块，偶然发现。腹部计算机断层扫描（CT）显示一个轴向直径为167×146mm的肿块，与RCC兼容，软组织密度不均，中央坏死。没有证据表明右肾静脉或下腔静脉有肿瘤血栓。通过前肋下切口进行开放性根治性肾切除术。病理检查显示17×15cm肾嗜酸细胞瘤。患者于术后第六天出院。临床或放射学，肾嗜酸细胞瘤和肾细胞癌通常无法区分，尽管如果看到有纤维性延伸的中央疤痕，可能会怀疑嗜酸细胞瘤，所谓的“轮辐外观”。治疗应根据临床方面做出决定。根治性/部分肾切除术或热消融可被视为治疗选择。在这篇文章中,我们回顾了有关肾嗜酸细胞瘤的影像学和病理学特征的文献。
