Takahashi K, Sugimoto H, Ohsawa T
Department of Radiology, Jichi Medical School and Hospital, Tochigi-ken, Japan.
Radiology. 1992 Mar;182(3):825-8. doi: 10.1148/radiology.182.3.1535902.
Obliteration of the descending aortic interface is a new radiographic finding in pectus excavatum. Seventy frontal and lateral chest radiographs and 33 computed tomographic (CT) scans of patients with pectus excavatum were retrospectively reviewed to evaluate the frequency, possible cause, and clinical significance of this finding, which was detected in 21 of 70 cases (30%) of pectus excavatum. No significant relationship was found between this finding and the extent of the thoracic deformity. In patients with this finding, the left inferior pulmonary vein (PV) entered the left atrium at an acute angle to the sagittal plane, as demonstrated at CT, and this angle was significantly smaller than that in patients without this finding. The PV angle also significantly correlated with the cardiac rotation angle. In pectus excavatum, partial obliteration of the descending aortic interface can be mistaken for adjacent disease.
降主动脉界面消失是漏斗胸的一项新的影像学表现。对70例漏斗胸患者的70张胸部正侧位X线片和33例计算机断层扫描（CT）进行回顾性分析，以评估这一表现的发生率、可能原因及临床意义，该表现见于70例漏斗胸患者中的21例（30%）。此表现与胸廓畸形程度之间未发现显著相关性。在有此表现的患者中，如CT所示，左下肺静脉（PV）以与矢状面成锐角的方式进入左心房，且该角度显著小于无此表现的患者。PV角也与心脏旋转角显著相关。在漏斗胸中，降主动脉界面的部分消失可能会被误诊为相邻疾病。
