popliteal lymph nodes

例句：

1. 1.The popliteal lymph nodes are located in the lower leg, near the knee joint.
   腘窝淋巴结位于小腿，靠近膝关节。
2. 2.Doctors often perform biopsies on these lymph nodes to check for cancer or other diseases.
   医生经常对这些淋巴结进行活检，以检查是否有癌症或其他疾病。
3. 3. Popliteal lymph nodes can be a sign of an infection or inflammation in the lower extremity.
   腘窝淋巴结可能是下肢感染或炎症的一个标志。