Chidambarathanu Shanthi, Raja Vijayalakshmi, Suresh Indrani
Fetal Cardiology Unit and Pediatric Cardiac Services, Mediscan Systems, Chennai, Tamil Nadu, India.
Ann Pediatr Cardiol. 2017 Jan-Apr;10(1):72-74. doi: 10.4103/0974-2069.197062.
A 28-week-old fetus was detected to have a single left atrial mass in prenatal ultrasound. Postnatal echocardiography showed an aneurysm between the anterior mitral leaflet and aortic valve, to the left of atrioventricular junction and communicating with the left ventricle through a narrow mouth. It probably originated from the mitral-aortic intervalvular fibrous tissue and an inherent weakness at this site might be the cause. Reported cases of pseudoaneurysm of mitral-aortic intervalvular fibrosa and subvalvular ventricular aneurysms seen following infective endocarditis, surgery, or trauma seem to have a similar anatomical background. This case explains the possibility of congenital aneurysm in this location which needs to be considered a differential diagnosis in similar cases.
一名28周大的胎儿在产前超声检查中被发现左心房有一个单一肿块。产后超声心动图显示二尖瓣前叶与主动脉瓣之间、房室交界处左侧有一个动脉瘤，通过一个狭窄的口与左心室相通。它可能起源于二尖瓣 - 主动脉瓣间纤维组织，该部位固有的薄弱可能是病因。感染性心内膜炎、手术或创伤后出现的二尖瓣 - 主动脉瓣间纤维性假性动脉瘤和瓣膜下室壁瘤的报道病例似乎有类似的解剖学背景。本病例说明了该部位先天性动脉瘤的可能性，在类似病例中需要考虑将其作为鉴别诊断。
