What are the complications of rectal cancer

The most common first symptom of rectal cancer is bleeding during bowel movements. Whenever rectal bleeding occurs, doctors should consider the possibility of cancer, even if they know the patient has hemorrhoids or diverticula. People with rectal cancer may experience abdominal pain during bowel movements and a feeling of incomplete bowel movements.

What are the complications of rectal cancer?

1. Colonic obstruction is one of the late complications of rectal cancer, which can occur suddenly or gradually. It is usually caused by tumor proliferation blocking the intestinal cavity or intestinal cavity narrowing, or by acute inflammation, congestion, edema, bleeding, etc. at the tumor site.

2. Intestinal perforation There are two types of perforation in rectal cancer: perforation occurs locally in the tumor; proximal colon perforation is a complication of tumor obstruction. After perforation occurs, clinical manifestations may include diffuse peritonitis, localized peritonitis, or local abscess formation. Diffuse peritonitis is often accompanied by toxic shock, and the mortality rate is extremely high.

The prognosis of rectal cancer has nothing to do with the patient's gender and age, but is closely related to the course of the disease, the extent of tumor infiltration, the degree of differentiation, and the presence or absence of metastasis.