(TEMS) a minimally invasive surgical procedure for rectal polyps not suitable for colonoscopic resection. For early rectal cancer it can be an alternative to lower anterior resection of the rectum. The procedure is performed through the anus and rectum using an *operating microscope and microsurgical instruments.
The conduct of very intricate surgical operations using specially re?ned operating microscopes (see MICROSCOPE) and miniaturised precision instruments – for example, forceps, scalpels, scissors, etc. Microsurgery is used in previously inaccessible areas of the brain, eye, inner ear and spinal cord, as well as in the suturing of severed nerves and small blood vessels following traumatic injuries to the limbs or ?ngers. The technique is also used to reverse VASECTOMY.... microsurgery
the fusion of endoscopy with ultrasonography. An ultrasound probe is incorporated into the endoscope in order to deliver highly detailed images from within the body. Endoscopic ultrasound is used predominantly by gastroenterologists, to assess internal structures or organs within the upper gastrointestinal tract, or by respiratory physicians in the assessment of bronchial disease. It may be used for diagnostic purposes, to accurately stage a confirmed diagnosis of cancer or to obtain tissue samples using fine-needle aspiration. Therapeutic indications include drainage of a pancreatic *pseudocyst, the common bile duct, or the pancreatic duct, and coeliac plexus neurolysis, a technique used to deliver pain relief in cases of intractable abdominal pain, usually resulting from chronic pancreatitis.... endoscopic ultrasound
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