A: Endoscopic Submucosal Dissection is a minimally invasive endoscopic procedure designed for the removal of early-stage GI cancers. Unlike traditional surgical approaches, ESD allows for meticulous dissection and resection of lesions confined to the mucosal layer of the GI tract. This precision is instrumental in achieving complete tumor removal while preserving the integrity of surrounding healthy tissue.

A: ESD is performed under sedation or anesthesia, typically in a specialized endoscopy unit. A high-definition endoscope, equipped with cutting-edge accessories such as a specialized knife and electrocautery tools, is employed for the procedure. The endoscope provides real-time visualization of the lesion, enabling the endoscopist to navigate and dissect with unparalleled precision.