[Tumor-like necrotizing granulomatosis of breast].

The observation of a tumor-like granulomatosis of the breast with vasculitis, necrosis and fibrosis is the reason for the discussion of the pathogenesis and the type of this special inflammatory lesion. The histological picture is that of Wegener's granulomatosis. The delimitation of a true tumor by clinical exploration is difficult or impossible and requires the histological examination in each case.