Differential diagnosis of colorectal cancer

summary

The occurrence of serious malignant tumor diseases such as colorectal cancer makes our patients suffer from pain and suffering. Once there is such a disease, we can not ignore it. It is necessary to diagnose the disease in time and make good treatment in time. This is the key to disease remission and cure. Let's understand what the differential diagnosis methods of colorectal cancer have.

Differential diagnosis of colorectal cancer

First, medical history. Detailed history can often enlighten the diagnosis of colorectal cancer. The possibility of colorectal cancer should be considered in those who have unexplained weight loss, anemia, change of stool habits, mucinous stool, bloody stool, intestinal obstruction, etc. For the early detection of colorectal cancer, people who have no obvious symptoms but risk factors for colorectal cancer, such as those with family history of colorectal cancer, who have suffered from colonic polyposis, ulcerative colitis, Crohn's disease, chronic schistosomiasis, pelvic radiotherapy and cholecystectomy, should be followed up and reexamined regularly. 　　

Second, physical examination. Comprehensive physical examination is not only helpful for the correct diagnosis of colorectal cancer, but also can estimate the severity of the disease, the invasion and metastasis of the cancer, and can be used as a reference for making a reasonable treatment plan. Local signs should pay attention to intestinal obstruction, abdominal mass and abdominal tenderness. Because the vast majority of colorectal cancer occurs in the rectum and sigmoid colon, digital rectal examination should be essential. All patients with hematochezia, stool habits change, stool deformation and other symptoms should be examined by digital rectal examination. During the examination, we should know whether there is anal or rectal stricture, whether there is blood on the fingertip, and if we touch the mass, we should know its location, shape, scope of the lesion, the activity of the base and the relationship between the two organs and adjacent organs. 　　

Third, laboratory examination. Blood routine, biochemical examination (liver and kidney function + serum iron), stool routine + fecal occult blood and other laboratory tests are helpful to understand whether the patient has iron deficiency anemia, liver and kidney function and other basic conditions. The detection of carcinoembryonic antigen (CEA) is helpful to the diagnosis of tumor. In patients with colorectal cancer, the high level of CEA does not mean that there is distant metastasis; in a few patients with metastasis, CEA does not increase.

matters needing attention

Appropriate use of vitamin E, such as eating walnuts, peanuts, dairy products, seafood, etc., excessive use of vitamin E, but there are disadvantages, should be appropriate consumption.