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Endoscopic ultrasound (EUS) or echo-endoscopy is a medical procedure in which endoscopy (insertion of a probe into a hollow organ) is combined with ultrasound to obtain images of the internal organs in the chest, abdomen and colon. It can be used to visualize the walls of these organs, or to look at adjacent structures.
In its most basic use, the endoscope is used to inspect the internal anatomy of the digestive tract. Often inspection alone is sufficient, but biopsy is a valuable adjunct to endoscopy. Small biopsies can be made with a pincer (biopsy forceps) which is passed through the scope and allows sampling of 1 to 3 mm pieces of tissue under direct ...
Confocal endoscopy, or confocal laser endomicroscopy (CLE), is a modern imaging technique that allows the examination of real-time microscopic and histological features inside the body. In the word "endomicroscopy", endo- means "within" and -skopein means "to view or observe".
A biopsy is a medical test commonly performed by a surgeon, an interventional radiologist, ... Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) of cystic ...
Therapeutic endoscopy is the medical term for an endoscopic procedure during which treatment is carried out via the endoscope. This contrasts with diagnostic endoscopy , where the aim of the procedure is purely to visualize a part of the gastrointestinal , respiratory or urinary tract in order to aid diagnosis .
Staging information which is obtained prior to surgery, for example by x-rays and endoscopic ultrasound, is called clinical staging; staging by surgery is known as pathological staging. Clinical staging is done by a combination of imaging and sampling (biopsies), or stated differently, non-invasive (radiological) and invasive (biopsy) methods.
A small quantity of tissue is sampled from the liver when doing a biopsy, which is then examined under a microscope. Liver biopsies may be taken percutaneously (via a needle through the skin), transvenously (through the blood vessels), endoscopically (through endoscopic ultrasound fine needle biopsy), or directly during abdominal surgery.
This is because, rigid endoscopy tends to use larger biopsy forceps to take tissue samples from the bowel wall while flexible endoscopy uses small biopsy forceps to take superficial samples. [1] For those with incomplete bowel preparation, the subject can return the next day or the day after next to repeat the procedure.