Six major cancers that men are prone to suffering from

　　Rectal cancer: Tianjin Cancer Hospital Liu Jianzhong, director of the colorectal oncology department, pointed out that men generally eat more fat and protein foods than women, and scientific research shows that they are one of the important causes of rectal cancer. Therefore, there should always be fiber-rich fruits and vegetables on the table.
　　
　　Early-stage rectal cancer lesions are limited to the mucosa, and the doctor can palpate slightly raised nodules under digital examination. At this time, the patient does not have any symptoms. Symptoms only appear when the cancer develops further, causing secondary infection and ulceration, which affects the smoothness of the intestinal cavity. Blood in the stool is common, and the frequency of bowel movements increases. constipate , tenesmus, before defecation stomach ache , thin stool with mucus, unexplained pain in the sacroiliac region, etc.
　　
　　Rectal cancer is a common disease of the anus and rectum. Because the symptoms are not obvious in the early stage, it is easily associated with other anal cancers. disease confused, often by some clinical Doctors ignore. Anorectal experts point out that among patients with rectal cancer, 80% of cancers can be discovered through simple, easy and non-invasive digital anal examination. The fingers can touch foreign bodies of different shapes, such as polyp-like objects, pedunculated and movable; or nodular masses, hard, irregular in shape and immovable. Fingertips stained with mucus indicate pus-bloody discharge.
　　
　　In short, as long as attention is paid to early digital anal examination, rectal cancer is easier to diagnose early than other digestive tract cancers. Therefore, experts in anorectal disease call for: Do not ignore the digital anal examination for early rectal cancer.
　　
　　Oral cancer: Hou Shengbo, chairman of the Taipei Head and Neck Oncology Society, said oral cancer is a common problem among young adults. male most accessible cancer , the incidence rate is female 10 times. Smoking, drinking, and eating betel nut are all triggers. He reminded that if he found Oral ulcers It is not good if it lasts for 2 weeks. You must seek medical treatment in time. This is the most important sign of oral cancer.
　　
　　If you have the following five symptoms in your mouth, you need to be alert to the possibility of oral cancer:
　　
　　Color change: Normal oral mucosa is pink. If it turns white, brown or black, it means that the mucosal epidermal cells have changed. Especially if the oral mucosa becomes rough, thickened or hardened, and white spots and erythema appear on the oral mucosa, it is likely that cancer has occurred.
　　
　　Ulcers that do not heal: The course of oral ulcers generally does not exceed two weeks. If symptoms such as burning sensation and pain do not improve for more than two weeks, you need to be alert to the possibility of oral cancer. Because oral cancer often appears in the form of ulcers, with raised edges around the edges, uneven center, and coverage of necrotic tissue.
　　
　　Obvious pain: In the early stage, there is usually no pain or only local abnormal friction sensation. After ulceration, the pain will be obvious. As the tumor further invades, the pain will be obvious. nerve , can cause ear and throat pain.
　　
　　Swollen lymph nodes: Oral cancer often metastasizes to nearby cervical lymph nodes. Sometimes the primary tumor is very small and even the symptoms are not obvious, but metastatic cancer cells are found in the cervical lymph nodes. Therefore, if the lymph nodes in the neck suddenly swell, the oral cavity needs to be checked.
　　
　　Functional impairment: Tumors may invade the muscles that open and close the mouth and the mandibular joint, resulting in limited movement of the mouth.
　　
　　Kidney cancer: Yao Xin, director of the genitourinary oncology department of Tianjin Cancer Hospital, said that its onset is related to obesity, smoking, etc. B-ultrasound and CT can help diagnose it.
　　
　　The clinical manifestations of kidney cancer are variable, and sometimes there are no symptoms. However, the tumor has progressed extensively in the body, and even shows signs of metastasis to the lungs, bones, etc. Hematuria, low back pain and masses are often referred to as the three typical symptoms of kidney cancer in clinical practice.
　　
　　(1) Hematuria is the most common symptom, often manifesting as intermittent, painless gross and/or microscopic hematuria.
　　
　　(2) Low back pain often presents as persistent dull pain. When the tumor has invaded the nerves or lumbar spine, it can cause severe pain. Hematuria solidifies into cord-shaped blood clots in the ureter and is excreted with the urine, which can cause waist pain.
　　
　　(3) Masses: Approximately 10% of patients with renal cancer have palpable masses in the waist or upper abdomen. Tumors formed in the kidney in the early stages are difficult to palpate. Only when they grow to a diameter of more than 3-5 cm can they be palpated. The lumps are often hard, uneven in surface, or nodular. In thin patients or when the tumor is located in the lower pole of the kidney, a mass may be palpable on physical examination. If the mass is fixed, it indicates perirenal infiltration and the prognosis is poor. The chance of the above three major symptoms appearing at the same time is rare, accounting for about 10% to 15%. If they appear at the same time, it is often a sign of late stage.