Ihoriya F, Imataki K, Tani H, Morichika Y, Abe Y, Onishi S, Uchida T, Yamada N, Yoshida H, Saito D
J Cardiogr. 1984 Oct;14(3):615-22.
A case of a two-chambered left ventricle with an abnormal floating mass was reported. A 13-year-old boy was admitted to our hospital because of a grade III/VI transsystolic apical murmur. Chest radiography showed mild cardiomegaly. The electrocardiogram showed QS patterns in leads V1-V3, and left ventricular high voltage with wide QRS complexes. A two-dimensional echocardiogram revealed two chambers divided by the septum in the left ventricle, and a mass floating in the apical chamber. A levogram showed the double chambered left ventricle incompatible with the findings of echocardiography. The walls of the accessory chamber and the septum were hypokinetic, but not dyskinetic. Coronary arteriograms were unremarkable. At surgery, tangled trabeculae carneae and chordae tendineae were observed on the apical surface of the septum. The accessory chamber communicated freely with the main chamber through an orifice with a diameter of 1.5 cm. No other congenital malformations were found. Microscopic examination of the accessory chamber wall showed the thickened endocardium and hypertrophic myocardial fibers, and there was no area of fibrosis.
报道了一例伴有异常漂浮肿物的双腔左心室病例。一名13岁男孩因III/VI级全收缩期心尖部杂音入住我院。胸部X线片显示轻度心脏扩大。心电图显示V1 - V3导联呈QS型，左心室高电压伴QRS波群增宽。二维超声心动图显示左心室内有隔膜将其分为两个腔室，且心尖腔内有一肿物漂浮。左心室造影显示双腔左心室，与超声心动图结果不符。副腔室壁和隔膜运动减弱，但无运动障碍。冠状动脉造影未见异常。手术中，在隔膜的心尖表面观察到纠结的肉柱和腱索。副腔室通过一个直径1.5厘米的孔与主腔室自由相通。未发现其他先天性畸形。副腔室壁的显微镜检查显示心内膜增厚和心肌纤维肥厚，且无纤维化区域。
