Abstract: A device and a method for the screening of in-vivo tumors in a target tissue are provided. The device and method provide a local measure of a risk of tumor presence in the target tissue with high specificity. The local measure may be based upon a non-linear combination of local hemoglobin and tissue oxygen saturation and other tissue characteristics.

Abstract: A stent removal system. Surgical devices and methods are provided for a system that allows the repositioning or removal of luminal stents. A conventional stent is modified by the addition of a tightening drawstring with a loop or region for grasping. When the stent is inserted within the body, the drawstring is slack and does not constrict the stent. When the drawstring is tightened, for example by pulling on the region for grasping, the circumference of the stent at the terminus is decreased, allowing the stent to be repositioned or removed without trauma to the organ.