How is the early stage of colorectal cancer identified?

Early stage of colorectal cancer diagnosis: stool once or twice a day, less, thinner, thinner. Mucus on tissues, a lot of farts, seven or eight times a day. Found it two or three months ago. Weight loss. Sometimes dizzy, dizzy for more than a year. Low blood pressure. Stomach bloating sometimes, non-atrophic gastritis. Just discovered. Chronic pharyngitis.

(I) Early symptoms: In the earliest stage, there may be abdominal distension, discomfort, and indigestion-like symptoms, followed by changes in bowel habits, such as increased bowel movements, diarrhea or constipation, and abdominal pain before defecation. Later, there may be mucus in the stool or mucus-purulent blood in the stool.

(B) Symptoms of poisoning: Due to the blood loss caused by tumor ulceration and the absorption of toxins, patients may often experience anemia, low fever, fatigue, weight loss, edema, etc., among which anemia and weight loss are particularly prominent.

(III) Manifestations of intestinal obstruction: Symptoms of incomplete or complete low-position intestinal obstruction, such as abdominal distension, abdominal pain (distension or colic), constipation or constipation. Physical examination can reveal abdominal distension, intestinal type, local tenderness, and strong bowel sounds.

(IV) Abdominal mass: It is a tumor or a mass that has infiltrated and adhered to the omentum and surrounding tissues. It is hard and irregular in shape. Some of them may have a certain degree of mobility along the intestinal tract. In the late stage, the tumor infiltration is more severe and the mass may be fixed.

(V) Late stage manifestations: Signs of liver metastasis such as jaundice, ascites, edema, as well as cachexia, a mass in the anterior rectal fossa, and enlarged supraclavicular lymph nodes, which are manifestations of distant tumor spread and metastasis.