A method for maintaining access to a biopsy site within a patient, includes forming a passageway from an opening in an exterior site on the patient to a desired location for a biopsy specimen within the patient removing a tissue specimen from the desired location thereby leaving a biopsy cavity providing a temporary catheter having an elongate shaft, a flexible proximal shaft section, and a distal shaft section having a cavity filling member thereon inserting the cavity filling member on the distal shaft section into the biopsy cavity inflating the cavity filling member after inserting the cavity filling member within the biopsy cavity, but before closing the opening, using the flexible proximal shaft section placing the flexible proximal shaft section at an intracorporeal location and closing the opening so as to seal the passageway.
