Analysis of colon cancer metastasis sites

The common feature of cancer is metastasis in the late stage, and the main metastasis direction of colon cancer is the liver. Most patients with colon cancer will experience metastasis during their illness, which brings great difficulties to the treatment of colon cancer . Ordinary treatment can only prolong the patient's survival rate, but cannot cure colon cancer. Let us now learn about the common metastatic sites of colon cancer.

1. Lymphatic metastasis of colon cancer. Lymphatic metastasis generally spreads from near to far in the following order, but there are also non-sequential metastasis. The probability of lymphatic metastasis increases after the tumor invades the intestinal wall muscle layer. If the subserous lymphatic vessels are invaded, the chance of lymphatic metastasis is even greater.

2. Generally, cancer cells or cancer emboli first reach the liver along the portal vein system, and then reach other tissues and organs such as the lungs, brain, and bones. Hematogenous metastasis is generally caused by colon cancer invading the capillaries and small veins, but it can also be caused by pressing the tumor mass during physical examination, squeezing the tumor during surgery, and even strong peristalsis during obstruction can cause cancer cells to enter the bloodstream.

3. Colon cancer can directly infiltrate surrounding tissues and organs. Cancer cells fall off in the intestinal cavity and can be implanted on other mucosa. If they fall off in the abdominal cavity, they can be implanted on the peritoneum. The metastatic lesions are nodular or millet-shaped, white or grayish white, and hard. If they spread throughout the abdominal cavity, they can cause cancerous peritonitis and ascites.

The above are the common sites of colon cancer metastasis. I hope that readers can understand the metastasis direction of colon cancer and carry out targeted treatment of colon cancer to prevent cancer metastasis as much as possible.

For more information, please visit the colorectal cancer topic at http://www..com.cn/zhongliu/ca/ or consult an expert for free. The expert will then give a detailed answer based on the patient's specific situation.