1, mass: it is formed by malignant proliferation of cancer cells, and the hand can touch the body surface or deep. Thyroid cancer, parotid cancer or breast cancer can be felt in superficial parts of the skin. Tumor metastasis to lymph nodes can lead to lymph node enlargement, and some superficial lymph nodes, such as cervical lymph nodes and axillary lymph nodes, are easy to touch. As for gastric cancer, pancreatic cancer and so on. Deep in the body, you need to press hard to touch it. Malignant tumors, including cancer, grow rapidly, and the surface is not smooth, which is not easy to promote; Benign tumors generally have a smooth surface and slide as easily as eggs and table tennis.
2, pain: the appearance of pain often suggests that cancer has entered the middle and late stages. At first, it is mostly dull or dull pain, which is obvious at night. Later, it became more and more serious and unbearable, day and night. General painkillers don't work. Pain is usually caused by cancer cells invading nerves.
3. Ulcer: tissue necrosis is caused by the rapid growth of some body surface cancers and insufficient nutrition supply. For example, some breast cancers may have crater-like or cauliflower-like ulcers at the breast, secrete bloody secretions, and may be malodorous when complicated with infection. In addition, gastric cancer and colon cancer can also form ulcers, which can only be observed through gastroscopy and colonoscopy.
4, bleeding: cancer tissue invades blood vessels or small blood vessels of cancer tissue rupture. For example, patients with lung cancer may have hemoptysis and blood in their sputum; Gastric cancer, colon cancer and esophageal cancer can cause hematochezia.
5. Obstruction: Obstruction caused by the rapid growth of cancer tissue. When the obstruction is in the respiratory tract, it is difficult to breathe; Esophageal cancer obstructs esophagus and dysphagia; Biliary duct cancer can block the common bile duct and cause jaundice; Bladder cancer blocks the urethra, leading to dysuria. In short, the symptoms are different because of the different parts of cancer obstruction.
6. Intracranial tumors can cause neurological symptoms such as visual impairment (compression of optic nerve) and facial paralysis (compression of facial nerve); Bone tumor invading bone can lead to fracture; Liver cancer leads to decreased plasma albumin and ascites.