Overview of Colorectal Tubular Choriadenoma
Colorectal tubular villous adenomas are adenomas composed of both tubular and villous structures and account for 5% to 15% of colorectal adenomas, with a probability of carcinoma of about 20%. The adenomas are medium-sized, often with a thick stalked tip, and the surface portion is villous or nodular.
Etiology
The etiology and pathogenesis of this group of diseases remains unclear, with environmental toxins and genetic predisposition being known risk factors for tumorigenic polyps. Studies have shown that the risk factors affecting the development of adenomatous polyps are generally consistent with those of colorectal cancer.
Symptoms
As with colorectal tubular adenomas, blood in the stool is the most common symptom, bright red in color, mostly on the surface of the stool or after defecation. If the polyp is large and in a low position, there is often a sensation of falling down, a feeling of urgency and heaviness, or even a lack of bowel movement, with the adenoma prolapsing out of the anus. Long-term blood in stool can cause anemia, and larger tumors can lead to intestinal obstruction and intussusception, thus causing abdominal pain, constipation and other symptoms.
Examination
Rectal fingerprinting can find the location, size, shape and the presence or absence of bleeding of most polyps; fiber colonoscopy, X-ray barium enema angiography can find the tumor and determine its location in relation to the periphery, and pathological biopsy can determine the nature and classification of the tumor. General examination such as blood routine and electrolytes can understand whether the patient has anemia and acid-base balance.
Diagnosis
Diagnosis is made on the basis of history and examination. Rectal fingerprinting can touch the mass, can be further confirmed by colonoscopy, and at the same time take pathological biopsy characterization, can be diagnosed.
Treatment
Surgery is the main treatment means, and the surgical plan is formulated according to the size, location, number, activity, and the presence or absence of carcinoma of the tumor, and endoscopic electrocoagulation resection is preferred. For multiple adenomas, the diseased intestinal segment can be resected under the premise of fully considering the patient’s condition and the tumor.