目的:分析外伤性肺血肿CT表现特征,提高外伤性肺血肿的诊断符合率。方法:对本院7例肺血肿患者的胸部CT表现进行分析,以提高对肺血肿的认识,减少误诊。结果:CT能够很好地显示病灶的大小、位置、边界、内密度及周缘情况。结论:胸部CT肺血肿的典型表现加上特殊的外伤病史,是诊断肺血肿的关键。肺血肿在临床较少见,普通X线胸片对血肿的诊断存在一定的困难,定位、定性都不具优势,诊断主要依据典型CT表现、加上明确的外伤病史。 Objective: To analyze the CT features of traumatic pulmonary hematoma and to improve the coincidence rate of the diagnosis of traumatic pulmonary hematoma. Methods: Thoracic CT findings of 7 patients with pulmonary hematoma in our hospital were analyzed to improve the understanding of pulmonary hematoma and reduce misdiagnosis. Results: CT showed the size, location, boundary, internal density and peripheral edge of the lesion well. Conclusion: The typical manifestations of chest CT hematoma, combined with a special history of trauma, is the key to diagnosis of pulmonary hematoma. Pulmonary hematoma is rare in clinical practice, there is some difficulty in the diagnosis of hematoma by ordinary X-ray, positioning and qualitative are not superior, the diagnosis is mainly based on typical CT findings, combined with a clear history of trauma.