Pars prevertebralis

例句：

1. 1. The patient was diagnosed with a tumor in the pars prevertebralis.
   患者被诊断出椎骨前部有肿瘤。
2. 2. The surgery involved resecting the pars prevertebralis to relieve pressure on the spinal cord.
   手术包括切除椎骨前部以减轻对脊髓的压力。
3. 3. The patient's condition worsened significantly after the pars prevertebralis was removed.
   患者的病情在切除椎骨前部后明显恶化。