试验(-)、侧方应力试验(-)。膝关节X线片未见异常。MRI显示左膝内侧半球形肿物,与股骨界限明显,与内侧副韧带界限不清,关节内少量积液(图1)。胸片及CT示右肺中叶有2cm的圆形结节,全身骨扫描及肝、胆、肾B超未见异常。手术所见:切开皮肤及浅筋膜后可见肿物,有包膜,表面有许多怒 Test (-), Lateral Stress Test (-). Knee X-ray showed no abnormalities. MRI showed a medial hemispherical mass in the left knee with a clear demarcation from the femur, a clear borderline with the medial collateral ligament, and a small amount of fluid within the joint (Figure 1). Chest radiographs and CT showed a 2cm circular nodule in the middle right lung. Whole-body bone scan and abnormal liver, gallbladder and kidney B-ultrasound were not seen. Surgical findings: cut the skin and superficial fascia visible mass, a capsule, the surface has many anger