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Idiopathic Arteritis vs Visceral Angiitis-Reply

William M. O'Neill, MD
Arch Intern Med. 1977;137(6):812-813. doi:10.1001/archinte.1977.03630180084028.
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In Reply.—  From the tone of Dr Milgram's letter, I feel certain that he is in agreement with one of the pervasive themes of our manuscript—that the current classification and nomenclature of the necrotizing arteritides are certainly vague and inadequate. The clinical and pathological literature is replete with a variety of vascular inflammatory disorders, eg, classical polyarteritis nodosa, hypersensitivity angiitis, temporal arteritis, periarteritis, allergic granulomatas arteritis, necrotizing angiitis, giant cell arteritis, rheumatic arteritis, leukocytoclastic angiitis, etc.1,2 The addition of "idiopathic arteritis" and "visceral angiitis" does little to clarify the morass of eponyms that comprise the vasculitides. The important feature is that many patients have clinicopathological syndromes that defy clear delineation utilizing the present classification systems. The realization that many of the so-called syndromes of vascular inflammation are indeed overlapping and indistinct is crucial. In our case, we identified such an overlapping syndrome in which clinical and pathological evidence of


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