原发性肺肉瘤的CT表现及鉴别诊断

目的 探讨原发性肺肉瘤(PPS)的CT特征表现.方法 回顾分析5例PPS患者的CT表现和临床病史、病理资料,结合相关文献进行分析总结.结果 肿块较大,最大径约9.8 cm,平均为6.3 cm.1例呈鹿角状,1例类圆形,3例不规则团块状;5例患者均未见毛刺征象;2例伴有纵隔淋巴结肿大;5例患者中病灶内均未见钙化;1例伴有同侧肺动脉侵犯形成肺动脉瘤征象,1例伴有同侧下肺动脉栓塞;5例增强后病灶均轻度强化;2例伴有同侧胸腔积液征象.5例患者周围骨质均未见骨质破坏征象.结论 PPS的CT表现具有相对特异性,确诊需要依靠病理检查.

CT findings and differential diagnosis of primary pulmonary sarcoma

Objective To investigate the CT characteristics of primary pulmonary sarcoma (PPS).Methods The CT findings,clinical and pathologic data of 5 patients with PPS were analyzed retrospectively and summarized by reviewing the relevant literatures.Results Mass were bigger, the largest diameter was about 9.8 cm, with an average of 6.3 cm.The tumors displayed staghorn shape in 1 case,quasi-circular mass in 1 case and irregular agglomerate in 3 cases.Spicule sign was not found in all cases.No hilar lymph nodes swelling were seen and mediastinal lymph nodes swelling were seen in 2 cases.Calcification was not found in all cases.1 case with ipsilateral pulmonary artery aneurysms caused by pulmonary artery infringed.1 case with pulmonary embolism under the same side.The lesions of all cases were mild enhancement.2 cases were accompanied by ipsilateral hydrothorax.Bone destruction was not found in all cases.Conclusion CT features of PPS are of certain relative specificity.A definite diagnosis is depended on pathology.