Tumors on the surface of the body are generally easier to detect, while cancers occurring in internal organs have less obvious early symptoms. Like early detection, it requires careful observation at home and sending suspected patients to hospital for examination and identification by pharmacists. Here are 20 kinds of early symptoms of cancer. Unexplained wasting, weakness, irregular pain in the upper abdomen, decreased appetite, especially aversion to meat foods. Non-pregnant and breastfeeding women with running nipples or the ability to squeeze bloody fluid. Gradually increasing masses in any part of the body such as the breast, neck or abdomen Dry cough, blood in the sputum, chest tightness and chest pain for a long time In middle-aged women and above, there is a small amount of vaginal bleeding after sexual intercourse, or irregular vaginal bleeding in general, or “menstruation” again after several years of menopause, with a significant increase in leucorrhea. Gradually increasing jaundice and epigastric masses without abdominal pain. Rapid enlargement of the liver with pain in the liver area. Unexplained painless hematuria. Skin ulcers that do not heal for a long time. Sudden enlargement of the nevus accompanied by itching, rupture, painful bleeding or loss of hair on the nevus. Recurrent fever, persistent gum bleeding, subcutaneous bleeding and progressive anemia. Recurrent unexplained high fever. White spots on the oral mucosa, or on the female vulva or male penis glans, which rapidly expand and burn with discomfort. Progressive bilateral lower extremity weakness, sensory abnormalities, movement disorders and incontinence. Fracture of the femur or humerus without any obvious external force. A sensation of foreign body obstruction behind the sternum during feeding, tingling or slow passage of food. Nasal congestion, frequent small amount of bleeding or blood in the nose, with migraine, dizziness, tinnitus, and enlarged lymph nodes felt in the neck or behind the ear. Change in bowel habits, or alternating diarrhea and constipation, or stools with blood and pus, or stools that become thin and flat. Gradually increasing headache with sudden onset of transient visual disturbance and vomiting. Severe pain and swelling in the elbow or knee joints of adolescents, ineffective treatment with anti-rheumatic drugs or anti-inflammatory drugs. The above are the representative 20 symptoms of suspected malignant tumor. Anyone who finds these symptoms should pay enough attention and go to hospital for diagnosis by relevant specialists as soon as possible. However, it does not mean that any symptom mentioned above is cancer. The final diagnosis should be made by doctors only after detailed examination by various methods, otherwise it will bring unnecessary burden of mind to oneself and family.