Endoscopy is a technique used by doctors to see the inside of a human body. Initially, the endoscopy test was only for viewing esophagus, stomach, and colon. However, with medical development doctors are using endoscopy to thoroughly detect diseases of the ear, nose, throat, heart, urinary tract, joints, and abdomen.
Endoscopy is a frequently performed procedure to view the gastrointestinal tract by a lighted, flexible tube with the help of a camera at the end, named as an endoscope. Generally, small samples of tissues cells are collected and sent for testing.
Endoscopes are thin tubes which doctors insert into a person’s body, having a powerful light as well as a tiny camera at the end. There are quite a few types of endoscopes used in colonoscopy screening which differ according to the part of the body to be examined. The length and flexibility of the endoscope are determined according to the needs of the doctor and part of the body to be observed. To illustrate, an endoscope used by the doctor to inspect joints is inflexible. Though, the one used to interpret the inside of the colon is comparatively flexible.
Two Basic Types Of Endoscopy
Upper endoscopy – In this esophagus, stomach, and small intestines are viewed through a thin flexible tube put in the mouth. When you go for GI endoscopy, the doctor usually gives a sedative or sprays the patient’s throat with a local anesthetic, so that the patient relaxes. Consequently, the patient is asked to lie on a side, and then the doctor passes the endoscope through the mouth into the esophagus, stomach, and duodenum. Few patients say that the procedure is slightly uncomfortable while some fall asleep during the procedure.
Patient’s throat is a little sore, and they feel bloated after the air is introduced into the stomach in the test. They can eat normally when you leave unless the doctor instructs you otherwise.
Colonoscopy – In a colonoscopy, the lining of the large intestine, colon, and rectum is viewed by a flexible tube placed in the rectum. A colon scope is used to view the complete length of the colon and large intestine and it reaches the target by entering through the anus.
Before there was colon capsule endoscopy (CCE) which is slightly invasive and patient-friendly procedure giving the full visualization of the entire intestine. It is usually done when some colonic disease is suspected.
Usually, doctors give you the test results on the day of the procedure; however, the results of some comprehensive tests take several days.