What are the clinical symptoms of colorectal cancer?

Colorectal cancer is a common tumor in my country, with an incidence rate second only to lung cancer and gastric cancer. In recent years, colorectal cancer has become a major disease that endangers human life, bringing great pain and distress to humans. Do you know the symptoms of colorectal cancer? Experts say that due to the different locations and ranges of the lesions, the symptoms of colorectal cancer vary. So what are the clinical symptoms of colorectal cancer?

1. Early Colorectal Cancer

Symptoms only appear in the early stages of the disease. In fact, most patients who have clinical symptoms are asymptomatic in the early stages. As the tumor grows and the disease progresses, the local lesions often become significantly more serious, even in the late stages.

2. Advanced Colorectal Cancer

More obvious symptoms may occur once colorectal cancer enters the late stage. However, some symptoms are not specific and are related to the location of the cancer.

1. Right-sided colon cancer causes fatigue, mainly manifested as indigestion. Loss of appetite, diarrhea, constipation, or alternating constipation and diarrhea, abdominal distension, abdominal pain, abdominal tenderness, abdominal mass, and progressive anemia. The location of the mass varies with the location of the lesion. The mass of cecal cancer is located in the right lower abdomen, the mass of the ascending colon is located in the right abdomen, the mass of the hepatic flexure of the colon is located in the right upper abdomen, and the mass of the transverse colon is located near the umbilicus. In addition, there may be fever, weight loss, and complications such as perforation and localized abscess. At this time, the lesion has entered the most advanced stage.

2. Left-sided colon cancer forms an acute angle with the rectum. Since the sigmoid colon is narrow, it is easy to develop stenosis and progressive intestinal obstruction, often with stubborn constipation, and may also be accompanied by an increase in the frequency of bowel movements. Since the obstruction is mostly in the lower part of the sigmoid colon, vomiting is mild or absent, while abdominal distension, abdominal pain, bowel sounds and intestinal patterns are obvious. When the tumor ruptures, the stool may be stained with blood or mucus. The proximal intestinal tract of the obstruction may form ulcers due to persistent expansion, ischemia, and hypoxia, and may even cause perforation. A large amount of blood and abdominal abscesses may also occur.

3. Rectal cancer: Feces become thinner, mainly manifested by increased bowel movements. They contain blood or mucus, accompanied by tenesmus. Since the cancer can invade the sacral plexus, severe pain may occur. If the bladder is involved, symptoms such as frequent urination, painful urination, urgent urination, and hematuria may occur. Cancer invasion of the bladder may form a bladder-rectal fistula. Rectal cancer can also cause intestinal obstruction.

4. Anal canal cancer may cause fecal incontinence. Anal canal cancer can metastasize to the inguinal lymph nodes, which are mainly manifested as blood in the stool and pain. The pain is aggravated during defecation. When the cancer invades the anal sphincter, swollen and hard lymph nodes can be felt in the groin.

The above is an introduction to the specific clinical symptoms of colorectal cancer. Expert Tips: If you have symptoms of disease, you can choose the appropriate treatment according to your symptoms. You should go to a regular hospital for treatment in time to avoid delaying the disease and causing serious consequences. If you have other questions, please consult our online experts or call for consultation. Believe in miracles and wish you health, happiness and joy!

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