The difference between colonography and colonoscopy

Colonography is a common examination item at present. It can examine the anus and intestines through a slender and curved tube, and can clearly observe the internal situation. This is also a current examination method, which is more common and has more advantages. In addition, there is another examination item called colonoscopy. What is the difference between colonoscopy and colonography?

Colonography concept

The colon continues to the cecum in the right iliac fossa and connects to the rectum at the level of the third sacral vertebra. The colon is divided into four parts: ascending colon, transverse colon, descending colon and sigmoid colon. Most of it is fixed to the posterior abdominal wall. The arrangement of the colon resembles the English letter "M", surrounding the small intestine.

Diagnostic range

Colon tumors and polyps.

Chronic inflammation of the colon.

Congenital anomalies of the colon.

Diagnosis and repair of colonic obstruction and intussusception.

A colonoscope is a thin, flexible medical instrument about 1 cm in diameter. It is passed through the anus into the rectum and into the large intestine, allowing doctors to observe the internal conditions of the colon and large intestine. A colonoscopy is a diagnostic test used by doctors to examine the large intestine and the interior of the colon.

The original colonoscope was mostly used for quarantine and was simpler than the modern colonoscope. Modern colonoscopes are often equipped with cameras and are longer in size, so they can examine lesions at a deeper level.

Clinical significance

Applicable diseases: colorectal polyps; colorectal inflammatory diseases such as ulcerative colitis; chronic colitis; colon cancer, etc. Indications

The indications for electronic colonoscopy are quite broad. Electronic colonoscopy can be performed in any of the following situations without contraindications.

1. Unexplained lower gastrointestinal bleeding.

2. Chronic diarrhea of ​​unknown cause.

3. Unexplained abdominal mass, where lesions of the large intestine and terminal ileum cannot be ruled out.

4. Unexplained pain in the lower abdomen.

5. Patients suspected of having benign or malignant colon tumors, but cannot be diagnosed by X-ray examination.

6. Suspected of having chronic inflammatory intestinal disease.

7. If abnormalities are found during barium enema or intestinal examination, the nature and extent of the lesions need to be further clarified.

8. Determine the extent of lesions before colon cancer surgery, and conduct reexamination and follow-up of efficacy of colon cancer and polyps surgery.

9. Low intestinal obstruction of unknown cause.

Colonoscopy is no longer as painful as people imagined in the past, and most people can tolerate it.

In addition: Patients can also request a painless colonoscopy under general anesthesia. When you take a nap, the colonoscopy will be done, but the risks of general anesthesia cannot be ignored.

Contraindications of electronic colonoscopy: Endoscopic examination should not be performed when the anal canal and rectum are narrow and the endoscope cannot be inserted. Patients with symptoms of peritoneal irritation, such as intestinal perforation, peritonitis, etc., are contraindicated in undergoing this examination. Avoid colonoscopy if there is acute infection of the anorectal canal or painful lesions, such as anal fissures or perianal abscesses.

Women should not be examined during menstruation and should be examined with caution during pregnancy. People who are elderly, frail, have severe hypertension, anemia, coronary heart disease, or heart and lung failure should not undergo endoscopic examination. This examination is contraindicated in patients who are suspected of having perforation, intestinal fistula, or extensive abdominal adhesions in the early stage after abdominal or pelvic surgery.