Buttar Rupinder, Baibhav Bipul
Cardiology, Rochester Regional Health, Rochester, USA.
Cardiology, Sands-Constellation Heart Institute, Rochester Regional Health, Rochester, USA.
Cureus. 2020 Sep 9;12(9):e10340. doi: 10.7759/cureus.10340.
Accessory mitral valve tissue (AMVT) is a rare congenital cardiac anomaly that is often an asymptomatic incidental finding. However, it has also been reported to be an important cause of left ventricular outflow tract obstruction (LVOTO) in subset of patients. When symptomatic, patients can often present with symptoms, including dyspnea, chest pain and palpitations/arrhythmias. Surgical resection is indicated in symptomatic cases with significant LVOTO. We here report a 50-year-old male who presented with chest pain and was incidentally found to have AMVT on an echocardiogram. No evidence of LVOTO was seen at rest, Valsalva, or stress. We also provide a review of literature in regards to most relevant clinical implication of AMVT.
二尖瓣附属组织（AMVT）是一种罕见的先天性心脏异常，通常是无症状的偶然发现。然而，据报道，在部分患者中，它也是左心室流出道梗阻（LVOTO）的重要原因。有症状时，患者通常会出现呼吸困难、胸痛和心悸/心律失常等症状。有明显LVOTO的有症状病例需要进行手术切除。我们在此报告一名50岁男性，他因胸痛就诊，在超声心动图检查中偶然发现患有AMVT。静息、瓦尔萨尔瓦动作或应激状态下均未发现LVOTO的证据。我们还提供了关于AMVT最相关临床意义的文献综述。
