静脉注射海洛因所致肺部感染性病变的螺旋CT表现

目的探讨静脉注射海洛因所致肺部感染性病变的螺旋CT表现，以提高其诊断水平。方法回顾性分析21例静脉注射海洛因继发肺部感染性病变患者的临床资料，螺旋CT表现：结果21例中均在首次螺旋CT平扫中发现病灶，表现为：(1)气囊，共13例(61．9％)；(2)空洞，13例(61．9％)；(3)实变，15例(71．4％)；(4)胸膜改变，8例(38．1％)，其中胸腔积液7例(33.3％)：包裹性液气胸1例(0．48％)：单纯一种改变有3例(14．3％)，两种及两种以上改变者18例(85．7％)．21例均有胸片对照．胸片有异常者20例(95．2％)，病灶形态与CT类似，但螺旋CT图像上显示的病灶数和细微变化较胸片多；胸片未见明显异常者1例(4．8％)，CT扫描发现有小气囊：结论螺旋CT扫捕检出肺气囊、空洞、实变和胸膜改变4种征象．是静脉注射海洛因所致血源性肺部化脓性感染较特异性的表现，对其诊断和鉴别诊断有重要价值．

Spiral CT findings of pulmonary infection induced by intravenous injection of heroin]

OBJECTIVE: To investigate spiral CT findings of pulmonary infection induced by intravenous injection of heroin. METHODS: The clinical data and spiral CT findings of 21 patients with pulmonary infection due to intravenous injection of heroin were analyzed retrospectively. RESULTS: Pulmonary lesions were detected in all these cases in the initial examination by spiral CT plain scan, including pneumatocele in 13 (61.9%), pulmonary cavity in 13 (61.9%), pulmonary consolidation in 15 (71.4%), and plural lesions in 8 cases (38.1%) of which 7 (33.3%) had plural effusion and 1 (0.48%) had encapsulated hydropneumothorax. Three cases had only one of the lesions and 18 had at least 2 of them. The CT images in each case were compared with X-ray film, and the latter displayed abnormalities in 20 cases (95.2%). X-ray failed to detect the lesions in 1 case (4.8%), in which pneumatocele was found in CT images. CONCLUSION: The pulmonary lesions of pulmonary pneumatocele, cavity, consolidation, and plural lesions are specific CT manifestations of hematogenous pulmonary suppurative infection induced by intravenous injection of heroin.