NAVLE（北美执业兽医考题）Day 342

Q1:A 12-year-old Newfoundland is presentedwith left thoracic limb lameness. Pain localizes to the left shoulder andproximal humerus. Based on the radiographic findings, history, and signalment,osteosarcoma is high on the differential list. There are no metastatic lesionsvisible in three thoracic radiographic views. (not shown) What percentage ofdogs with osteosarcoma will have visible pulmonary metastatic lesions atinitial diagnosis?一只12岁的纽芬兰犬由于左前肢跛行前来就诊。其疼痛局限于左肩部和肱骨近端。根据X光片，病史以及症状，高度提示骨肉瘤。三张胸腔X光片均未见转移灶，有多少患有骨肉瘤的犬可能会在初诊时发现肺部转移？Find out the answer by clicking on one ofthe listed choices. Good luck!点击列出的选项找出答案，祝大家好运