Qin Fei, Zhang Xiaofei, Zhang Jie, Liu Shuaihong, Wang Zijie, Xie Fei, Zhang Mingxin, Zhang Tianwei, Wang Shuangyi, Jiao Wei
Department of Urology, The Affiliated Hospital of Qingdao University, Qingdao, China.
Department of Education and Training, The Affiliated Hospital of Qingdao University, Qingdao, China.
Front Oncol. 2022 Feb 2;12:830195. doi: 10.3389/fonc.2022.830195. eCollection 2022.
Patients with renal cell carcinoma are often troubled by metastases, but masseter muscle metastases are particularly rare.
We reported a 76-year-old male who did not show any recurrence and metastasis after the nephrectomy until 5 years later. The metastatic mass was found with the protrusion of masseter muscle area. Computed tomography and ultrasonography indicated a hypervascular mass, and pathology confirmed the masseter muscle metastasis of renal cell carcinoma. Complete metastasectomy was performed with the preserval of facial function and appearance. No local recurrence or distant metastasis was found in follow-up.
Our report indicates masseter muscle can be a metastatic site of renal cell carcinoma, regardless of its rarity. Long-term comprehensive surveillance is needed for patients with renal cell carcinoma. Muscle metastases can disguise as benign mass, while multiple imaging and pathology are important in identifying their sources. If possible, complete metastasectomy with function retention is recommended for masseter muscle metastases.
肾细胞癌患者常受转移困扰，但咬肌转移极为罕见。
我们报告了一名76岁男性，肾切除术后5年内未出现任何复发和转移。咬肌区域突出处发现转移肿块。计算机断层扫描和超声检查显示为高血管性肿块，病理证实为肾细胞癌咬肌转移。在保留面部功能和外观的情况下进行了完整的转移瘤切除术。随访中未发现局部复发或远处转移。
我们的报告表明，咬肌可作为肾细胞癌的转移部位，尽管其罕见。肾细胞癌患者需要长期综合监测。肌肉转移瘤可能伪装成良性肿块，而多种影像学检查和病理检查对于确定其来源很重要。若有可能，建议对咬肌转移瘤进行保留功能的完整转移瘤切除术。
