The echocardiogram showed a left ventricular (LV) intracavi-tary longitudinal structure of increased echogenicity, which initially was misinterpreted as a ruptured haemodialysis catheter, but actually was a false tendon (arrow). False tendons are fibrous or fibromuscular bands that originate in the interven-tricular septum and stretch across the left ventricular cavity and can contain conduction tissue fibre. They are very common echocardiographic finding with prevalence rates of up to 76% depending on age, sex, underlying cardiac status and if these structures are specifically searched for. The differential diagnosis includes thrombi, septal hypertrophy, tumours and subaortic membranes. They are usually of no clinical importance except for their possible role in the genesis of innocent murmurs and ventricular arrhythmias. (Malouf J, Gharzuddine W, Kutayli F. A reappraisal of the prevalence and clinical importance of left ventricular false tendons in children and adults. Br. Heart J. 1986; 55: 587-591). LA, left atrium.
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机译：超声心动图显示左心室（LV）的纵向回声增强性，最初被误认为是血液透析导管破裂，但实际上是假肌腱（箭头）。假肌腱是起源于室间隔并延伸穿过左心室腔的纤维或纤维肌带，并可能包含传导组织纤维。它们是非常常见的超声心动图检查结果，患病率高达76％，具体取决于年龄，性别，基本心脏状况以及是否专门搜索这些结构。鉴别诊断包括血栓，间隔肥大，肿瘤和主动脉膜下。除了它们可能在无辜杂音和室性心律失常的发生中的作用外，它们通常没有临床意义。 （Malouf J，Gharzuddine W，Kutayli F.对儿童和成人左心室假肌腱的患病率和临床重要性的重新评估。Br。Heart J. 1986; 55：587-591）。洛杉矶，左心房。
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