Miravitlles M, Alvarez-Castells A, Vidal R, Vendrell M, Torrents C, de Gracia J
Department of Pneumology, Hospital General Universitari Vall d'Hebron, Barcelona, Spain.
Respiration. 1994;61(6):324-9. doi: 10.1159/000196363.
This study examines the value of different imaging methods in assessing the anatomic structures of unilateral hyperlucent lung due to obliterative bronchiolitis. We studied 9 patients, 5 males and 4 females, suffering from UHL (mean age 49 years). Ventilation-perfusion scan (VPS) and computed tomography (CT) of the chest were performed in all, and conventional angiography or digital substraction angiography (DSA) in 7 patients. The VPS showed the characteristic pattern of a matched ventilation-perfusion defect and considerable air trapping during the washout phase. Conventional angiography and DSA displayed a smaller pulmonary artery on the affected side, with a poor peripheral vasculature. CT displayed a loss of lung volume in all cases, with diminished mean attenuation values, a markedly diminished vasculature and integrity of the main airways. In contrast to other imaging modalities, CT imaged bronchiectasis, which was the cause of the patients' clinical symptoms of bronchorrhea and hemoptysis. We conclude that CT of the chest is the most valuable imaging method for evaluating unilateral hyperlucent lung, particularly in symptomatic patients.
本研究探讨不同成像方法在评估闭塞性细支气管炎所致单侧肺透亮度增高的解剖结构中的价值。我们研究了9例单侧肺透亮度增高（UHL）患者，其中男性5例，女性4例，平均年龄49岁。所有患者均行胸部通气灌注扫描（VPS）和计算机断层扫描（CT），7例患者行传统血管造影或数字减影血管造影（DSA）。VPS显示通气灌注匹配缺损的特征性模式以及洗脱期明显的气体潴留。传统血管造影和DSA显示患侧肺动脉较小，外周血管较差。CT显示所有病例肺体积减小，平均衰减值降低，血管明显减少，主气道完整。与其他成像方式不同，CT显示了支气管扩张，这是患者出现支气管溢液和咯血临床症状的原因。我们得出结论，胸部CT是评估单侧肺透亮度增高最有价值的成像方法，尤其是对有症状的患者。
