There are more symptoms of stomach cancer metastasized to lungs, which itself may have symptoms of stomach cancer, such as nausea, vomiting, loss of appetite, emaciation, the abdomen may have bloating and even black stool. If the tumor metastasizes to the lungs at the review stage after the surgery for stomach cancer, there will also be respiratory symptoms in the lungs. However, there are only a small number of people who have this symptom, and it may not have much specificity. For example, if patients have unexplained cough, low fever, dyspnea, chest tightness, shortness of breath and other symptoms, on the surface, patients can easily mistake them for colds and respiratory tract infections. And the symptoms are relatively mild, routine oral antibiotics, nebulization, sputum and other treatments, respiratory symptoms can not be relieved, then we should be alert to whether there is a metastatic tumor in the lungs, you can do lung enhancement CT to clarify.