What are the symptoms of colorectal cancer? How is it diagnosed?

The onset of colorectal cancer has a serious impact on the patient's normal life. If colorectal cancer is not treated in time, the condition will further deteriorate. So, what are the symptoms of colorectal cancer ? Let's take a look at the symptoms of colorectal cancer introduced by experts.

Symptoms of colorectal cancer include:

1. Mucus in stool: Villous adenoma often secretes more mucus, and the colorectal cancer evolved from it often has symptoms of mucus in stool.

2. Abdominal mass: 20% to 30% of colon cancer patients can feel abdominal mass when they are diagnosed. Abdominal mass is one of the most common symptoms of right-sided colon cancer. It is worth noting that the abdominal mass that occurs in right-sided colon cancer is not entirely the tumor itself. It is often an adhesion mass caused by tumor infection or even perforation. Sometimes it is due to intussusception caused by the tumor. The latter situation often manifests as an abdominal mass that appears and disappears from time to time.

3. Blood in stool: The surface of the tumor is different from the normal mucosa, and it is easy to bleed after friction with stool. The stool in the lower large intestine is dry and hard, so blood in stool is the most common. Because the lesion is close to the anus, the blood is mostly bright red or dark red, and the blood and stool are often separated.

4. Anemia: When long-term chronic blood loss exceeds the body's hematopoietic compensatory function, the patient may develop anemia. Generally speaking, the later the disease is, the more frequent and severe the anemia is.

5. Symptoms caused by tumor obstruction: When the tumor grows to a considerable size or infiltrates the intestinal wall muscle layer, it can cause intestinal stenosis, the intestinal cavity becomes smaller, and the passage of intestinal contents is blocked. At this time, symptoms such as intestinal rumbling, abdominal pain, abdominal distension, constipation, and difficulty in defecation may occur.

6. Perforation: Perforation may occur when the cancerous focus penetrates the intestinal wall in the form of a deep ulcer. Half of the perforation enters the peritoneal cavity and may cause peritonitis, while the rest may form abscesses or cellulitis locally.

7. Clinical symptoms of lymphatic metastasis: Left supraclavicular lymph node metastasis is a late manifestation of colorectal cancer. When colorectal cancer metastasizes to the parailiac lymph nodes, the lymph can flow back to the groin and cause inguinal lymph node metastasis, which is also a late manifestation.

The above are the symptoms of colorectal cancer. Through the introduction of experts, I believe you have a certain understanding of the symptoms of colorectal cancer. If you have any questions about the symptoms of colorectal cancer, please consult our online experts.

For more information, please visit the colorectal cancer disease special topic at http://www..com.cn/zhongliu/dca/ or consult an expert for free. The expert will then give a detailed answer based on the patient's specific situation.