2021年2月22日星期一

hemorrhoids cancer,Hematochezia and rectal cancer

    The rectum and anus are located at the lowest part of the human body, and are the end and outlet of the digestive tract. Compared with the work performed by other organs of the human body, the work done is the dirtiest and most tiring job. It is responsible for the discharge of 4-5 tons of feces in a lifetime. Heavy tasks, so often overwork becomes sick. Common clinical anorectal diseases include hemorrhoids, anal sinusitis, anal fissures, paraanal abscesses, anal fistulas, and anal cancer. The rectum is the terminal part of the human large intestine. It is about 12cm long and lives deep in the narrow pelvic cavity. Its lower end is connected to the anus and becomes a neighbor adjacent to the anus. From the upper end of the rectum to the cecum, it is anatomically divided into (from bottom to top) the sigmoid colon, descending colon, transverse colon, ascending colon, and cecum. This part of the intestine with a length of about 1.5m is collectively called the large intestine. At present, the incidence of colorectal cancer in China is increasing at a rate of 4%, and rectal cancer is the most common colorectal cancer, accounting for about 60%-70% of all colorectal cancers. The middle and lower rectum is the most common rectal cancer, accounting for about 70% of all rectal cancers. Rectal cancer originates from epithelial cells on the surface of the rectal mucosa. In the early stage of canceration, tumor cells multiply rapidly and grow geometrically. Because the growth rate of tumors is faster than that of self-nourishing blood vessels...

没有评论:

发表评论

hemorrhoids ligation,Irritating anorectal swelling

    Irritating anorectal swelling     Anal bulging is different from anal pain. In the mild cases, local fullness and falling, and severe c...