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26.10.2017 | Stomach (DA Johnson, Section Editor) | Ausgabe 4/2017

Current Treatment Options in Gastroenterology 4/2017

Endoscopic Evaluation and Management of Gastric Stromal Tumors

Zeitschrift:
Current Treatment Options in Gastroenterology > Ausgabe 4/2017
Autoren:
MD Kambiz Kadkhodayan, MD Ehsan Rafiq, MD Robert H. Hawes
Wichtige Hinweise
This article is part of the Topical Collection on Stomach

Opinion Statement

Purpose of Review Gastrointestinal stromal tumors (GISTs) are both relatively common. Management of these lesions has been challenging with emerging interest in the endoscopic approach for both diagnostic and therapeutic interventions.
Recent Findings Although these can be visualized on CT scan, endoscopic ultrasound (EUS) represents the standard method of evaluation and characterization using fine needle aspiration cytology (FNA) when indicated. While EUS-FNA can yield diagnostic cells, full characterization requires a sufficient volume of viable cells to do molecular analysis for c-KIT and determine the mitotic index. A new generation of fine needle biopsy (FNB) needles holds promise for improving our ability to fully characterize these lesions which will hopefully lead to improved management. Very small GISTs (< 1 cm) can probably be ignored, those between 1 and 2 cm are often surveyed, and those > 2 cm should be resected if the patient is fit and the lesion is in an accessible location. Though laparoscopic wedge resection is considered the standard of care, for small GISTs, those that are endophytic and/or located in a difficult position, pure endoscopic or hybrid laparoscopic-endoscopic approaches offer promise.
Summary This review highlights the emerging advanced endoscopic approaches to GISTs. Although endoscopic removal of GISTs has two major advantages—precise localization of the lesion and gastric preservation, best practice strategies should focus on available expertise of expert endoscopists.

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