What are the clinical manifestations of colorectal cancer

Colorectal cancer is a common disease. Symptoms include pain common to cancer, as well as blood in the stool. In the later stages, it may be accompanied by systemic symptoms such as anemia, fever, and weight loss. The cause of the disease is related to the patient's lifestyle and genetics. In order to detect colorectal cancer early, we need to understand the clinical manifestations of colorectal cancer, as follows:

Colorectal cancer is a common malignant tumor, including colon cancer and rectal cancer.
The occurrence of colorectal cancer is related to a high-fat, low-fiber diet, chronic inflammation of the colon, colorectal adenomas, genetic factors and other factors such as schistosomiasis, pelvic radiation, environmental factors (such as molybdenum deficiency in the soil), smoking, etc.
In the early stage of colorectal cancer, there are no symptoms or the symptoms are not obvious, only discomfort, indigestion, occult blood in stool, etc. As the cancer develops, symptoms gradually appear, manifested as changes in bowel habits, abdominal pain, blood in stool, abdominal mass, intestinal obstruction, etc., with or without systemic symptoms such as anemia, fever and weight loss. Tumor metastasis and infiltration can cause changes in the affected organs. Colorectal cancer shows different clinical symptoms and signs due to different locations of occurrence.