Gastric mesenchymal tumor generally refers to gastrointestinal mesenchymal tumor, 13 centimeters gastrointestinal mesenchymal tumor is generally considered serious, and it is recommended that the patient take timely and relevant therapeutic measures, so as to alleviate the symptoms of the disease and improve the prognosis. Gastrointestinal mesenchymal tumor is a soft tissue sarcoma originating from Kahal’s mesenchymal cells, the cause of which is not yet clear, and may be related to genetic mutation, environment, heredity and other factors. Patients who have a gastrointestinal mesenchymal tumor of 13 centimeters are at high risk and need to take relevant treatment measures in a timely manner. Patients can take oral anti-tumor drugs, such as imatinib, sunitinib, etc., under the guidance of doctors, or take surgical treatment, such as open surgery, laparoscopic surgical treatment, gastrointestinal endoscopic resection. Some patients can take radiotherapy and chemotherapy after surgery, integrated treatment, most patients can improve the prognosis and survival time after standardized treatment. Once diagnosed with gastrointestinal mesenchymal stromal tumor, patients need to actively cooperate with doctors to take relevant treatment measures, so as not to delay the condition. In daily life, it is necessary to maintain sufficient rest time. Please strictly follow the doctor’s instructions for medication, and do not use medication on your own.