Rectal cancer spread symptoms?

summary

For this kind of disease of rectal cancer, if it is not treated in time, it is likely to cause other complications, which will bring great harm to our life. This will increase the difficulty of treatment of patients. The most common is the spread of rectal cancer. So, what is the spread of rectal cancer symptoms? Now let's talk about it.

Rectal cancer spread symptoms?

Rectal cancer infiltrates slowly up and down the longitudinal axis of the bowel, and the infiltration distance is small, rarely 2-3cm beyond the edge of the cancer. However, the infiltration along the transverse direction is faster than that along the longitudinal direction. About half a year, it can reach 1 / 4 of the week of intestinal invasion. It takes about a year and a half to two years to infiltrate one week. Compared with other digestive tract tumors, the infiltration speed is relatively slow. Rectal tumor can also spread to adjacent tissues and organs after reaching full thickness, and can also be fixed with surrounding tissues.

We divided the lymphatic drainage above the dentate line of rectum into three groups: upper, middle and lower. Up to the abdominal aortic lymph nodes, the retrorectal lymph nodes or presacral lymph nodes pass through the parailiac lymph nodes or the mesenteric root lymph nodes. In the middle group, they spread to the medial side of the pelvic diaphragm, through the lymph nodes in the lateral ligament to the internal iliac lymph nodes, and then ascended. In the lower group, through the pelvic diaphragm, through the ischiorectal fossa lymph nodes, up to the iliac lymph nodes, down through the sphincter, anal skin to the inguinal lymph nodes. Generally, most of the rectal lymphatic drainage which is more than 8 cm away from the anal margin moves upward and middle, but when the lymphatic vessels are obstructed by cancer cells, they can also be drained downward. Most of the rectal lymphatic drainage below 8 cm from the anal margin is downward, so the resection of this rectal cancer should be carried out together with the removal of the anus and its surrounding fat. The lymph node metastasis of rectal cancer is more than that of colon cancer, and the lower the probability is higher.

The common etiology of rectal cancer is very complex. If some patients eat irregular diet for a long time, it will cause colorectal cancer. They often eat pickled food or food that has been placed for a long time, which will increase the activity of intestinal anaerobic bacteria and even induce colorectal cancer.

matters needing attention

The predisposing factors of rectal cancer are very complex. They are all caused by bad living habits. Therefore, we should have a good sense of self-care at ordinary times. If there are symptoms of abdominal pain and bloody stool, we should go to the hospital for examination in time.