Methods and devices are provided for marking tissue to be subsequently located for removal from a body or for other examination. In general, a marker is provided that can be delivered through a tissue wall proximate to tissue desirable for marking. The marker can be movable between a non-deployed or unexpanded position, in which the marker is configured to be delivered through a relatively small diameter passageway, to an expanded, balloon-like position in which the marker is configured to engage opposed sides of a tissue wall proximate to the desired tissue. The marker can remain disposed in the body in its expanded position and be subsequently palpably identified and/or visually identified to locate the desired tissue.
