肋骨巨细胞瘤少见,国内资料仅有4例报道,我院收集了2例,其中一例征象特异、罕见。例1 男性,28岁,右前胸肿块,年余。一年前患者自觉右上胸痛、继而发现肿块,X线检查:右第二前肋端呈圆形膨大,其中可见分房。切线位:肋骨前端呈圆形膨大性骨破坏、向胸壁内外生长,其中无分房,肿块骨壳厚薄不均、不光滑,尚完整。诊断为右第二前肋软骨瘤,于1972月1月8日入院。手术切除、病理证实为巨细胞瘤1级。例2 男性,18岁,以肿块型胸膜间皮 The giant rib giant cell tumor is rare, only 4 cases of domestic data have been reported, 2 cases were collected in our hospital, and one of the signs was specific and rare. Example 1 Male, 28 years old, with a right anterior chest mass, more than a year old. One year ago, the patient felt conscious of right upper chest pain, and then found a mass. X-ray examination showed that the right second front rib end showed a circular enlargement, and it was seen that there was a separate room. Tangential position: The front of the ribs is rounded and the enlarged bone breaks down and grows inside and outside the chest wall. There is no compartment, and the mass of the bone is uneven, not smooth, and it is still intact. The diagnosis of right second precostal chondroma was admitted to hospital on January 8, 1972. Surgical resection and pathology confirmed giant cell tumor grade 1. Case 2 Male, 18 years old, with lump-type pleural mesothelium