What are the complications of colorectal cancer?

Colorectal cancer refers to a malignant tumor of the colon mucosal epithelium caused by a variety of carcinogenic factors such as environmental or genetic factors. Its prognosis and mortality rate are relatively high. Currently, common complications of colorectal cancer include intestinal obstruction, intestinal perforation, acute intestinal bleeding, etc. The following is a detailed introduction to various complications.

1. Blood in the stool: Because the lesion is close to the anus, the blood is often bright red or dark red, and the blood and stool are often separated. Only when the amount of bleeding is large can the stool be seen to be brown-red or jam-like. Among the patients with right-sided colon cancer admitted to the Affiliated Cancer Hospital of Fudan University, 36.5% had visible blood in the stool.

2. Anemia When long-term chronic blood loss exceeds the body's hematopoietic compensatory function, the patient may develop anemia.

3. Tumor obstruction When the tumor grows to a considerable size or infiltrates the intestinal wall muscle layer, it can cause intestinal stenosis, a smaller intestinal cavity, and obstruction of intestinal contents. Intestinal distension, fluid loss, electrolyte imbalance, infection, and toxemia

4. Perforation Perforation may occur when the cancer lesion appears as a deep ulcer that penetrates the intestinal wall.

5. Sciatica or obturator neuralgia may also occur when the tumor infiltrates or compresses the sciatic nerve or obturator nerve root (lumbar plexus).

The above is a brief introduction to "What are the complications of colorectal cancer?" For people who are related to the pathogenic factors of colorectal cancer, it is recommended to take preventive measures for colorectal cancer and carry out specific treatment according to the doctor's instructions. I hope that patients can recover soon! If you have other questions about colorectal cancer, please consult our experts online or call for consultation.

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