Name: Endoscopic Full-Thickness Resection / EFTR - Medical Glossary | Dr. Sergei Vosko
Creator: Dr. Sergei Vosko
Published: 2026-08-09T11:11:54.430Z

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Endoscopic Full-Thickness Resection / EFTR

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Polyp

A polyp is a benign (non-cancerous) growth in the digestive system. There are several types of polyps. A polyp called an adenoma may develop into cancer.
Polyps can be found throughout the digestive tract but are more common in the colon.
Statistics show that 20-50 percent of people over the age of 50 will have colon polyps.

Tumor

A cluster of cells that have begun to divide uncontrollably.

Benign tumor - is a growth whose cells do not spread to other organs in the body - however, if they continue to grow in the original area, their growth may cause pressure on adjacent organs.

Malignant tumor - is cancerous in nature, composed of cells capable of spreading. Without treatment, it may send metastases to additional areas in the body, to nearby tissues, and destroy them. Sometimes, cells detach from the original (primary) tumor and spread to other organs in the body through the bloodstream or lymphatic system.
When these cells reach a new area, they may continue to divide and form new masses called 'secondary tumor' or 'metastasis'.

Tumor symptoms depend on its location. For example, a tumor in the lungs may cause coughing, shortness of breath, or chest pain. Tumors in the intestine may cause weight loss, diarrhea, constipation, anemia, and blood in the stool.

Complex Polyp Removal (EMR)

Polyps are small growths that develop into the lumen of the small intestine, colon, stomach, esophagus, and other organs. There is a wide variety of polyps, and some may even develop into cancerous tumors.

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The larger the surface area of the polyp, the more complex its removal becomes. One of the innovative methods for removing large polyps is Polypectomy by endoscopic mucosal resection, which can replace surgery in some cases. This technique uses a fluid, such as saline, injected beneath the polyp in order to lift and isolate it from the surrounding tissue.

Dr. Vosko performs polyp removal using advanced equipment, state-of-the-art knives, cutting-edge technology, optimal and high-definition visualization, and the integration of extensive experience and skill, all of which increase the likelihood of complete removal of the polyp or lesion along with improved and quicker recovery chances.

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Dr. Sergei Vosko is the head of the Endoscopic Unit at Hadassah and formerly the founder of the Department for Advanced Endoscopic Resections at Shamir Medical Center (Assaf Harofeh Hospital). Performs diagnostics, treatments, and surgeries using Advanced Endoscopy and artificial intelligence.

To schedule an examination, you can contact our customer service

Removal of gastrointestinal tumors without surgery using a new method - ESD

A technique that originated in Japan in the early 2000s for the endoscopic removal of early-stage stomach tumors. In the past decade, the method has also spread to Western countries and has recently become available in Israel.

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The majority of malignant tumors in the gastrointestinal tract begin as precancerous lesions that develop in the most superficial layer of the gastrointestinal wall - the mucosa. As the tumor grows, it begins to invade deeper layers of the bowel wall, and from there it may spread to nearby lymph nodes and send metastases to more distant areas of the body.

The accepted treatment for these precancerous lesions is resection through an endoscopic procedure.

The advantages of this method over other resection techniques such as EMR include the ability to remove lesions of any size in a single piece, which allows for thorough pathological examination of the specimen and accurate assessment of the risk of lymph node metastasis according to the depth of tumor invasion into the submucosa.

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All procedures involved in this method are performed under anesthesia or sedation, through an endoscope inserted via the mouth or rectum, without surgical incision.

Initially, the tumor boundaries are marked through the endoscope, and then fluid is injected beneath the tumor directly into the submucosal layer, to allow separation of the tumor from the deeper layers of the wall. After making a circumferential incision around the tumor area, Dr. Sergei Vosko will cut the submucosa with a special knife that separates the tumor from the surrounding tissues. Once the tumor has been completely removed, it will be sent for pathological laboratory examination.

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Dr. Sergei Vosko, head of the Endoscopy Unit at Hadassah Medical Center and founder of the Department of Advanced Endoscopic Resection at Shamir Medical Center (Assaf Harofeh Hospital), performs examinations, treatments, and procedures using Advanced Endoscopy and artificial intelligence.

To schedule an examination, you may contact our customer service

Endoscopic Full-Thickness Resection / EFTR

Endoscopic Full-Thickness Resection / EFTR

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Endoscopic therapies related to the topic

Advanced Endoscopic Resections of Cancerous and Pre-Cancerous Lesions (Polyps) - ESD/EMR/STER/EFTR

Advanced Medicine & Technology - with a Human Touch

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