The heart, like other parts of the body, grows tumors, except that the incidence is very low, <1 in 2000 people at autopsy. Cardiac mucinous tumors are the most common primary benign tumors of the heart. Today we will learn more about cardiac mucinous tumors. 1. What is a cardiac mucinous tumor? Cardiac mucinous tumors can occur in all atrial and ventricular chambers of the heart, most commonly in the left atrium, accounting for about 75% of cases. Most tumors have a tumor tip attached to the wall of the atrium, and 90% of left atrial mucinous tumors are attached to the atrium. The tumor can move with the contraction and diastole of the heart. Most patients are between 30 and 50 years of age. The incidence is slightly higher in women than in men. 2.What kind of manifestations will patients have? Symptoms are varied, depending on the size and location of the mucinous tumor. Mucinous tumors of small size can be asymptomatic. When the tumor grows up, it can show three types of symptoms: hemodynamic changes, systemic manifestations and peripheral vascular embolism. (1) Mucinous tumor is soft and fragile, and the tumor debris or surface thrombus can be dislodged and block blood vessels, such as blocking cerebral arteries, coronary arteries, limb vessels and internal vessels. 2）Obstruction of pulmonary vein, resulting in poor blood return to the lungs, causing pulmonary hypertension, coughing, coughing up blood sputum, chest tightness, shortness of breath, paroxysmal dyspnea, etc. (3) When the tumor is too large, it obstructs blood flow and causes general hypoxia, cyanosis and pestle finger. If the tumor is embedded in the mitral valve, tricuspid valve and other locations, it may even lead to sudden death. 3.How to check for mucinous tumor? Atrial mucinous tumor is the most common cardiac tumor, accounting for about 50% of primary cardiac tumors. About 75% of mucinous tumors occur in the left atrium, 20% in the right atrium, and 5% in the ventricle. The clinical manifestations of atrial mucinous tumors resemble other cardiac diseases and are often misdiagnosed as rheumatic heart disease or mitral valve lesions. With the popular use of echocardiography, the detection rate of this disease has increased significantly. 4.How is it treated? Mucinous tumors require surgical treatment if they are symptomatic or if the risk is high. Surgery should be performed as soon as possible after the diagnosis of mucinous tumor to remove the tumor and restore the function of the heart. The heart is one of the most important positions in our body, so it is very important to protect it in our life, and although our heart will not suffer from cancer, it can suffer from many dangerous diseases, so we need to pay great attention to the health of our heart.