In 1931 Klinger described a case of polyarteritis nodosa with an unusual localization of. the lesions in the nasal septum, lungs, spleen, and kidneys. Wegener (1937, 1939) reported three more similar cases as a new disease, stressing its granulomatous aspect. Since that time, examples of this condition have appeared in the literature under a confusing variety of different names, but recent auth...