benign renal tumor

例句：

1. 1.The patient was diagnosed with a benign renal tumor and underwent surgery.
   患者被诊断出患有一个良性肾肿瘤，并接受了手术。
2. 2.Benign renal tumors are typically slow-growing and do not require immediate treatment.
   良性肾肿瘤通常生长缓慢，不需要立即治疗。
3. 3. Early detection of benign renal tumors can significantly improve prognosis and survival rates.
   早期发现良性肾肿瘤可以显著提高预后和生存率。