Czekajska-Chehab E, Uhlig S, Staśkiewicz G, Widomska-Czekajska T, Drop A
1st Department of Radiology, Medical University of Lublin, Poland.
Folia Morphol (Warsz). 2009 Nov;68(4):290-3.
Quadricuspid pulmonary valve (QPV) is an uncommon congenital defect reported in the general population with a frequency of up to 0.25%. The defect usually does not cause severe clinical complications and its presence frequently remains clinically silent. Moreover, there are several difficulties in visualization of pulmonary valve using basic diagnostic modalities such as echocardiography. Therefore, in the majority of cases, QPV is detected accidentally during cardiac procedures or post mortem. The authors present a case of QPV complicated with aneurysm of the pulmonary trunk, diagnosed with computed tomography in 70-year-old woman. Although the patient had undergone transthoracic echocardiography examinations several times in the past, only computed tomography allowed the detection of the anomalous valve. In addition, the examination confirmed aneurysm of the pulmonary trunk. To the best of our knowledge, this is the first case of QPV diagnosed in vivo with computed tomography.
四叶式肺动脉瓣（QPV）是一种在普通人群中报道的罕见先天性缺陷，发生率高达0.25%。该缺陷通常不会引起严重的临床并发症，其存在在临床上常常没有症状。此外，使用超声心动图等基本诊断方法可视化肺动脉瓣存在一些困难。因此，在大多数情况下，QPV是在心脏手术期间或尸检时偶然发现的。作者报告了一例70岁女性QPV合并肺动脉干动脉瘤的病例，通过计算机断层扫描诊断。尽管该患者过去曾多次接受经胸超声心动图检查，但只有计算机断层扫描能够检测到异常瓣膜。此外，该检查证实了肺动脉干动脉瘤。据我们所知，这是首例通过计算机断层扫描在活体中诊断出的QPV病例。
