Invasive ductal carcinoma of the male breast expanding from pacemaker pocket decubitus

After twenty-five years of therapy with different unifocal pacemaking syste ms, an 84-year old male patient developed a nonseptic pacemaker decubitus. A rare incidental finding of inversive ductal carcinoma of the right mammar y gland was surgically treated by a generous excision of the tumor and by c onsecutive modified radical mastectomy. According to published literature, the association of invasive ductal carcinoma arising from a pacemaker pocke t decubitus and folio wed by curative treatment has not been previously; re ported. We do conclude that pacemaker generators in close relationship to t he mammary gland should be considered with suspicion.