What Are the Symptoms of Colon Cancer?

In the earliest stage of colon cancer, symptoms such as abdominal distension, discomfort, and indigestion may be present. Subsequently, changes in bowel habits may occur, including increased frequency of bowel movements, diarrhea or constipation, and abdominal pain before defecation. Later, mucous stool or mucous bloody stool may appear. Additionally, colon cancer may manifest as toxic symptoms, intestinal obstruction, abdominal masses, and other symptoms.

Due to tumor ulceration, blood loss, and toxin absorption, patients often exhibit symptoms such as anemia, low fever, fatigue, weight loss, and edema. Among these, anemia and weight loss are the most prominent.

Intestinal obstruction can manifest as incomplete or complete low intestinal obstruction symptoms, such as abdominal distension, abdominal pain (bloating or cramping), constipation, or fecal impaction. Physical examination may reveal abdominal distension, intestinal type, local tenderness, and audible hyperactive bowel sounds.

Abdominal masses can be caused by the tumor itself or adhesions with the omentum and surrounding tissues. They are usually firm, irregularly shaped, and may have a certain degree of mobility with the intestines. In the late stages, as the tumor infiltrates more deeply, the mass may become fixed.

Colon cancer can cause significant suffering for patients. Early detection and treatment of the disease can help reduce pain and prolong the patient's lifespan. It is crucial to improve the patient's immune system, as only a strong immune system can help the patient fight the tumor and improve the quality of life for those in the late stages.