Patient: 1. Ultrasound findings AO:3.27cmLA:6.6cmRV:2.5cmIVS:0.8cmLV:5.89cmLVPW:0.94cmRA (transverse diameter):5.1cmLeft atrium, left ventricle, and right atrium were enlarged, and right ventricular diameter was normal. The atrial septum was continuous and intact. The mitral valve leaflets were thickened, echogenically enhanced, with adhesions at the junction and restricted opening. A strong echogenic mass was detected in the left auricle, measuring approximately 3.6 cm by 1.99 cm. Ventricular wall motion analysis: there was a general decrease in myocardial motility in all segments of the left ventricle, with no significant abnormalities in echogenicity or thickness. Left ventricular systolic function: LVEF:37% CDFI: moderate to severe regurgitant signal was seen in the mitral valve. A small amount of regurgitant signal was seen in the aortic valve. The aortic antegrade flow was accelerated with CW Vmax:383cm/s and PGmax:59mmHg. The tricuspid valve showed severe regurgitation with CW Vmax:402cm/s and PGmax:65mmHg. The chest CT scan + enhancement imaging showed thickened and disorganized texture of both lungs, no abnormal density foci and enhancement foci were seen in the lungs; the bronchi were patent in the segments and above, and multiple enlarged lymph nodes were seen in the hilum and mediastinum bilaterally; no fluid accumulation and pleural hypertrophy were seen in the chest cavity bilaterally. The main pulmonary artery and the lumen of the left and right pulmonary arteries were widened, and there were scattered speckled high-density images at the aortic root valve. Diagnostic imaging: 1. Multiple lymph nodes in both pulmonary hilum and mediastinum are enlarged, which is difficult to characterize and biopsy is recommended. 2. How do I treat it? Doctor: From the results of your examination, the diagnosis is basically clear, and valve replacement surgery should be performed.