Abstract: Systems and methods for auto-anastomosing a region occupying one or more hollow viscera of the body are disclosed. The system includes a first magnetic member configured to be delivered to a location in the body adjacent the region. A second magnetic member is configured to be located adjacent the region opposite from the first magnetic member such that said region is disposed in between the first magnetic member and the second magnetic member. The first and second magnetic members are configured to generate an attractive force to compress tissue in the region between them so that the tissue in the region necroses as a result of the compressive force such that tissue surrounding the necrosed tissue heals together to form an anastomosis. The anstomosis may connect a fistula between two internal viscera or viscera segments, or create a stoma from a viscera to an external surface of the body.