Pay attention to the alarm signal colon cancer

Colorectal cancer, including colon and rectal cancer, is a subtle early symptoms of cancer, easily confused with many diseases, the slower growth of colorectal cancer, a longer period of time limited to local, early detection can be radical surgery. Data show that about 30% to 40% of colorectal cancer patients by doctors and patients by the negligence of misdiagnosis. With most cancer incidence rates decreased year by year the contrary, the world is the incidence of colorectal cancer by an average annual rate of 2% rise, the survey showed that in Shanghai, China's growth rate of colorectal cancer incidence rate is twice the world's average level, reaching an annual average of 4%. Colorectal cancer early have the following performance. Hematochezia: colorectal cancer early lesions limited to the mucosa may be asymptomatic or only defecation habits change. When tumor growth to a certain degree, there can be hematochezia, blood and more desalination dark, adhesion to the surface stool. Red blood cells can be found in stool examination, fecal occult blood test was positive. They have blood on the stool occult blood or continuing positive patients, we should first take into account the possibility of colorectal cancer, and should be further related inspections; Mucus and blood will be: tumor rupture, often with bright red stools or dark blood and mucus, and the fecal blood mixed; Defecation habits change: stool frequency from once a day turned into two or three times, each time after a stool stool not feeling; Diarrhea or constipation alternating: the turn of diarrhea and constipation symptoms appeared, it may be because the growth of cancer affecting the normal physiological function of intestine, it should be considered cancerous; Abdominal pain and abdominal distension: colorectal cancer patients with intestinal obstruction due to abdominal distention, abdominal pain, abdominal pain over the incidence of the high incidence of abdominal distension. Multi-site pain in the lower abdomen, and varying severity degree, and most secret anguish or pain; Anemia and emaciated: With the progression, the patient, there may be expendable chronic symptoms, such as anemia, weight loss, weakness and fever, and even evil, liquid quality, and often accompanied by fatigue and can not explain the sharp drop in weight, and hematochezia, and inadequate intake of excessive consumption related. When the above performance should be considered cancerous, the best do colonoscopy, which is the early diagnosis of colorectal cancer effective means.