An episode of paroxysmal colic around the umbilicus in an elderly person is likely to be a sign of intestinal obstruction. Older people must pay attention to it in time. Colorectal tumors causing intestinal obstruction have various causes. For patients who have undergone abdominal surgery, the most common cause of intestinal obstruction is intestinal adhesions caused after surgery, while for the elderly, the first thing to consider is the condition of intestinal tumors. The most common site of intestinal tumor in the elderly is in the colorectum, and colorectal tumor is the third most common malignant tumor in China, and there is a rising trend.
There are three epidemiological characteristics of Chinese colon and rectal cancer compared with Westerners: ① the incidence of rectal cancer is higher than colon cancer, about 1.5:1; ② the proportion of low rectal cancer in rectal cancer is high, about 75%, and most rectal cancers can be palpated during rectal finger examination; ③ the proportion of young people (<30 years old) patients is high, about 15%. However, in recent decades, with the improvement of people's living standard and the change of diet structure, the proportion of colon cancer has gradually increased. The treatment of colorectal cancer takes surgery to remove the cancer as the first choice, supplemented by radiotherapy, chemotherapy and Chinese medicine, etc. Recently, many scholars have adopted endoscopic resection treatment for early colorectal cancer, which has also achieved good results.