Midterm symptoms of left colon cancer

summary

What are the early symptoms of left colon cancer? Colon cancer (including rectal cancer) is adenocarcinoma of the large intestine, which is a common malignant tumor in the intestine. How is colon cancer caused? The cause of the disease is not clear, but the occurrence of the disease is related to the diet with more fat and less fiber. Let's learn about the early symptoms of lower left colon cancer.

Midterm symptoms of left colon cancer

First, about 40% of colon cancer is distributed in rectum and rectum sigmoid flexure, and the rest is distributed in sigmoid colon, cecum, ascending colon, descending colon, transverse colon, liver and spleen flexure. Colon cancer is mainly adenocarcinoma, the rest is mucinous adenocarcinoma and undifferentiated carcinoma, the general morphology can be polypoid, ulcerative type. Colon cancer can develop along the intestinal wall, spread up and down along the longitudinal diameter of the intestinal canal, or infiltrate into the deep layer of the intestinal wall. In addition to lymphatic metastasis, blood flow metastasis and local invasion, colon cancer can spread into the abdominal cavity or along the suture and incision surface.

Second: colon cancer is more common in middle-aged men, from adenoma polyp canceration, younger onset age, is a hidden early symptoms of malignant tumor, easy to be confused with a variety of diseases, early detection can be radical surgery.

Third: colon cancer early lesions can be asymptomatic, or only change defecation habits. When the tumor grows to a certain extent, hematochezia can appear. The blood color is dim and adheres to the surface of stool. For those with hematochezia, we should first consider the possibility of colorectal cancer, and it is best to do colonoscopy, which is an effective means of early diagnosis of colorectal cancer.

matters needing attention

Some patients with colon cancer will also have early changes in stool habits, some people will have diarrhea, constipation, abdominal pain, abdominal distension and anemia and emaciation. Colorectal cancer early signal: stool habits change, such as increased frequency or constipation, bloody stool, thin stool, still want to defecate after defecation. In this case, should go to the hospital for examination.