Hoeffel J C, Dally P, Legras B, Worms A M, Pernot C
Radiologe. 1986 May;26(5):248-52.
Isolated pulmonary valvular stenosis shows a typical radiological pattern in 70% of the cases, including bulging of the left middle and the right inferior segments, a convex left inferior segment and an upwards shift of the apex. In quite a lot of cases (28%), only one of the four above mentioned criteria, are found, mainly the bulging of the left middle segment. There is a small percentage (6%) of cases with an atypical radiological pattern or showing total normality (5%). There is a clear connection between the cardio-thoracic index and the degree of the stenosis but there is no connection between the severity of the stenosis and the degree of bulging of the left middle segment. However the plain chest film has no value for prognosis (evaluation of the degree of the stenosis) nor to follow the post operative course of this frequent congenital abnormality.
孤立性肺动脉瓣狭窄在70%的病例中显示出典型的放射学表现，包括左中叶和右下叶膨隆、左下叶凸出以及心尖上移。在相当多的病例（28%）中，仅发现上述四个标准中的一个，主要是左中叶膨隆。有一小部分病例（6%）表现为非典型放射学表现或完全正常（5%）。心胸指数与狭窄程度之间存在明显关联，但狭窄严重程度与左中叶膨隆程度之间无关联。然而，胸部平片对预后（评估狭窄程度）或跟踪这种常见先天性异常的术后病程均无价值。
