Abstract: An endoscopic resecting apparatus views and resects a target tissue. The endoscopic resecting apparatus includes a sleeve, a compartmentalized tube, a visualizing device, an illuminating device, a first resecting mechanism, an irrigating apparatus, an aspirating apparatus, a gas insufflation apparatus, and an apparatus to instill a drug. The compartmentalized tube is disposed in the sleeve and has a first compartment of a first set of dimensions and a second compartment of a second set of dimensions larger than the first set of dimensions. A portion of the visualizing device is disposed in the first compartment so that it directly views the target tissue. A portion of the resecting mechanism is disposed in the second compartment so that it resects the target tissue. A portion of the irrigating apparatus is disposed in the first compartment. A portion of the aspirating apparatus is disposed in the second compartment so that it removes the resected target tissue.