Cancer diagnostic tests, cancer accounts for about 50% of colorectal cancer is one of the top ten malignant tumors, the Yangtze River and southeastern coastal areas have a higher prevalence.
Cancer early diagnosis of symptoms, the patient may have no symptoms, or only a stool, like sores deflated performance is often overlooked. Some patients may have slightly increased stool frequency, loose stools. Patients have significant medium-term changes in bowel habits, the daily number may be as many as dozen ambassadors' more as loose stools or mucus in stools, bloody mucus can also be found or Nongxue it, with a clear focus in the acute sense of the blood of some patients may have then, each time before they would have after the fall of abdominal pain or pain. Significantly worse than patients with advanced symptoms, accompanied by anemia, weight loss, pain in Hong portal was falling, some patients there may be bloating, abdominal pain, nausea, vomiting and other symptoms of low intestinal obstruction bucket and some ascites, yellow plague, frequent urination, urinary pain patients had very advanced cachexia.
Early diagnosis of rectal cancer patients with palpable nodules check or small ulcer, softer, and can move together with the mucous membranes, activity was good. Interim DRE cauliflower types of objects can be touched, around the edges uplift, in the middle may be involved in ulcer, crisp and easy bleeding, a certain activity. Late DRE palpable tumor mass as hard as stone, often ring rectum week, local intestinal rigid narrow, brittle and easily bleeding tumor, and with the pelvis fixed, element activities. Check (1) digital rectal examination. (2) colonoscopy. (3) B-ultrasound. (4) CT examination. (5) laboratory tests, including occult blood test, serum CEA, hemoglobin determination, histological examination.