There are often patients who are found to have colorectal polyps after colonoscopy, and many doctors will inform patients that some colorectal polyps are precancerous, hearing the word cancer many patients are very nervous, today we will understand the past life of colorectal polyps.
Definition of colorectal polyp: Colorectal polyp is a type of abnormal growth of tissue protruding from the surface of the intestinal mucosa into the intestinal lumen, which is commonly referred to as polyp before the composition (pathological nature) is determined.
Simply put, a polyp is a ball of “flesh” formed by the growth and aggregation of cells originating from the mucosa.
Causes of colorectal polyps: There are many causes of colorectal polyps, including familial factors, hereditary factors, inflammatory factors, emotions, environment and diet, and other factors.
Clinical typing of colorectal polyps: 1, adenomatous polyps: including tubular, villous and mixed tubular (villous adenoma), such polyps have the highest probability of cancer, especially in the villous, known as precancerous lesions.
2, inflammatory polyps: including polyps caused by chronic colitis, ulcerative colitis, Crohn’s disease and other inflammatory bowel diseases, also known as pseudopolyps.
3, misshapen type: juvenile polyps and pigmented polyp syndrome.
4.Proliferative polyps: the most common type of intestinal polyps, mostly distributed in the distal colon. No malignant change occurs.
5.Childhood polyps: they are common in young children, with round or oval appearance and smooth surface. 90% of them grow within 25 cm from the anus, and most of them are less than 1 cm in diameter. These polyps are generally not malignant.
Clinical manifestations of colorectal polyps: 1. Clinical symptoms of colorectal polyps often vary, such as blood in the stool, abdominal pain, anal swelling prolapse, change in stool habits, mucus, etc.
2, some patients even if there are some gastrointestinal symptoms, such as bloating, diarrhea, constipation, etc., they are ignored because they are relatively mild and atypical.
3, and to blood, blood in the stool, mucus blood stool to the doctor, often misdiagnosed as hemorrhoids and other anal disorders or “dysentery” and delay its necessary examination.
How to find colorectal polyps: polyps that occur in the lower and middle rectum can be palpated by rectal finger examination, and colorectal polyps that cannot be palpated can be confirmed by sigmoidoscopy or colonoscopy.
The components of some polyps are taken during colonoscopy and analyzed by pathological examination to understand the nature, benignity and malignancy of polyps, i.e. biopsy.