endoscopic mucosal resection
Also written as: EMR
Advanced endoscopic technique for removing large flat or sessile colorectal polyps that cannot be safely excised by standard polypectomy.
Full Definition
Endoscopic mucosal resection is a specialized procedure that enables removal of large (typically >20mm) flat or sessile colorectal lesions through injection-assisted resection techniques. EMR involves submucosal injection to lift the lesion, followed by piecemeal or en bloc resection using specialized techniques. This approach allows complete removal of lesions that would otherwise require surgical intervention, though it carries specific risks including perforation and bleeding that require careful patient selection and expert technique.
Usage
Usage note: May be abbreviated as EMR; specify technique details and resection margins in procedure documentation.
In Context
- "The 35mm lateral spreading tumor was successfully removed by endoscopic mucosal resection." — Procedure note
- "EMR specimens require careful histologic examination to ensure complete resection margins." — Pathology protocol