secondary tumors

• 继发性肿瘤

secondary tumors的用法和样例：

例句

1. Primary tumors originating from the retropharyngeal space are rare.
   源于此部位的原发性肿瘤甚为罕见。
2. Most of parenchymatous tumors were malignant, which excision rate was low.
   实性肿瘤多为恶性，手术切除率低。