Where is the abdominal pain located in intestinal cancer?

The location of abdominal pain in colorectal cancer varies depending on the site of tumor growth. Generally, pain in the upper right abdomen is mostly due to colon cancer located in the liver region, while pain in the upper left abdomen is more likely caused by colon cancer located in the spleen region. Pain in the lower left abdomen is commonly seen in patients with rectal cancer. Some patients with colorectal cancer do not experience symptoms such as rectal bleeding or constipation, but they may have dull abdominal pain. This is due to the difference in individual constitutions, resulting in different early symptoms of colorectal cancer. The nature of pain in colorectal cancer is mostly abdominal distension and dull pain.

When the tumor is too large, it can block the intestinal lumen and cause intestinal obstruction or adhesion, leading to cessation of bowel movements and excretion accompanied by severe pain. However, there are many causes of abdominal pain, and sometimes kidney stones may be detected, which can easily lead to missed diagnosis of colorectal cancer. The pain of colorectal cancer is different from that of kidney stones. It is recommended that abdominal dull pain should be considered as a gastrointestinal issue, and colonoscopy is necessary to detect colorectal cancer early.

Many patients with colorectal cancer experience rectal bleeding due to damage to the intestinal mucosa or tumor rupture and bleeding, which can lead to changes in stool color during the course of the disease. Normal stool is yellowish-brown, but the appearance of black stool or tarry stool should raise suspicion of colorectal cancer as a possible signal of the disease. Additionally, significant weight loss in a short period of time can also be associated with colorectal cancer. Moreover, patients with colorectal cancer may experience a significant sense of abdominal bloating. If this feeling persists, especially after meals, it may be a sign of colorectal cancer.