Nalawade Digvijay D, Wadhokar Pratik Satyajit, Jadhav Ajitkumar Krishna, Manade Vivek V
Department of Cardiology, Dr. D. Y. Patil Medial College, Hospital and Research Centre, Pune, Maharashtra, India.
J Cardiovasc Echogr. 2024 Jul-Sep;34(3):149-151. doi: 10.4103/jcecho.jcecho_2_23. Epub 2024 Sep 21.
Crista terminalis is a crescent-shaped fibromuscular ridge in the posterolateral wall of the right atrium (RA) which separates the smooth posterior region of RA from a more muscular anterior region. When prominent, it frequently mimics RA thrombus, vegetation, or tumors such as myxoma. Differentiation of such anatomical structural variations from other masses is vital to minimize misdiagnosis and avoid disease-related apprehension. Different diagnostic modalities may be needed which have their own imaging characteristics as well as limitations. Our case emphasizes the differentiating features of prominent crista terminalis using two-dimensional and three-dimensional transesophageal echocardiography.
界嵴是右心房（RA）后壁上的新月形纤维肌性隆起，它将右心房光滑的后部区域与肌肉更丰富的前部区域分隔开来。当界嵴明显时，它常常酷似右心房血栓、赘生物或诸如黏液瘤等肿瘤。将这种解剖结构变异与其他肿块区分开来对于最大限度减少误诊和避免与疾病相关的担忧至关重要。可能需要不同的诊断方法，这些方法有其自身的成像特征及局限性。我们的病例强调了使用二维和三维经食管超声心动图鉴别明显界嵴的特征。
