muhiple primary tumors

• 多原发肿瘤

muhiple primary tumors的用法和样例：

例句

1. For instance, some patients are diagnosed with metastased tumours without the primary tumour every being found.
   比如说，一些患者在没有找到原发肿瘤就被诊断为转移癌。
2. The nasopharynx is the most common primary site in cerebral radionecrosis of extracranial malignancies, followed by the scalp and sinonasal tract.
   鼻咽是最常见的原发肿瘤部位，接下来依序是头皮以及鼻窦。