Body is our most precious capital. In fact, some inconspicuous and easily ignored symptoms on the body are often the pre-signs of tumor. If you have the following symptoms, please be vigilant and seek medical attention in time for examination to make a clear diagnosis. 1.The appearance of swelling or enlarged lymph nodes in any part of the body, without obvious redness, pain and heat but progressively increasing, should be considered whether it is lymphoma or metastatic cancer. 2. If a mole on the body gradually increases in size, with ruptured ooze or erosion on the surface, or if a mole with original hair suddenly loses hair, increases in size and erosion, it should be considered whether it is a mole that turns into melanoma. 3.If chronic skin ulcer is not cured for a long time and cauliflower-like swelling grows on its edge, it should be considered whether it is skin cancer. 4.The first spit with blood in the morning after waking up, intermittent attacks, or migraine, unilateral tinnitus, and neck lump should be considered as nasopharyngeal carcinoma. 5.As sharp teeth and broken residual teeth often irritate the edge of the tongue, local ulcers, hard nodules and untreated for a long time should be considered whether it is tongue cancer. 6.The original cough, recent irritating cough, or coughing bloody sputum and pain in fixed parts of the chest should be considered as lung cancer. 7.If the hoarseness of voice is unexplained and getting worse, and the treatment effect is not good, consider whether it is laryngeal cancer or metastasis of tumor in other parts. 8.When swallowing, there is a short stay or disorder of food passing through the esophagus, and it gradually develops into a painful situation when eating dry and hard things, it should be considered whether it is esophageal cancer. 9.The original history of gastric disease, the pain pattern suddenly changes, and there is bloating, anorexia and loss of weight. Or recently found stomach discomfort and foul-smelling gas with anemia, it should be considered whether it is gastric cancer. 10.Unexplained progressive pallor (anemia), consider whether it is gastrointestinal cancer, leukemia or multiple myeloma. 11.History of hepatitis or alcoholism, and recently found a hard mass in the right upper abdomen should be considered as liver cancer. 12.If the pain is persistent in the upper abdomen, which is aggravated by lying down or supine, and can be relieved by sitting up and bending the upper body forward or flexing the lower limbs, consider whether it is primary cancer of the pancreas or cancer from other parts metastasized to the pancreas. 13.No fever, no pain, no hepatitis symptoms, but yellow staining of eyes and skin, and progressive increase for more than one month, should be considered whether it is pancreatic head cancer or pot belly cancer. 14.If the stool habit changes, the frequency increases, accompanied by mucus and blood stool, or the shape of stool becomes flat and thin, and the treatment effect is not good, consider whether it is sigmoid colon cancer or rectal cancer. 15.No heat, no pain, pulling blood urine, intermittent episodes, to consider whether it is kidney cancer or bladder cancer. 16.Elderly people with difficulty in urination, thin urine flow, frequent urination and increased nocturia should consider whether it is prostate cancer. 17.Pain in a fixed position near a major joint of the limbs, followed by swelling and lump, and ineffective treatment, should consider whether it is malignant tumor of bone or periosteal sarcoma. 18.Persistent headache without fever and chill, light pain when standing, but heavy pain when lying down, and increased pain when coughing, defecating or sneezing, should be considered as brain tumor. 19.Having partial blindness or progressive blindness, altered sense of smell and taste, unstable walking, brain tumor should be considered. 20.Repeated punctate bleeding of skin and mucous membranes, or oral ulcers and progressive anemia and fever, consider whether you have leukemia.