What are cancer symptoms?

The local manifestations of cancer are mainly lumps, pain, ulcers, bleeding, obstruction. Systemic symptoms mainly include the following: early malignant tumor, almost no obvious symptoms of the whole body. Some patients may show weight loss, loss of appetite, cachexia, excessive sweating, anemia and fatigue and other non-specific symptoms. A few patients before or at the onset of metastasis, showing the corresponding metastatic site of clinical symptoms. For example, brain metastases can show headaches and dizziness in the brain. Lung metastases can show difficulty breathing. The above health science knowledge is for reference only.