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What is Which vasculitis affects both aerial and venous system? and explain in detail?
Polyangiitis With Granulomatosis Previously called Wegener granulomatosis, this autoim- mune disease most often involves the upper respiratory tract and/or the lungs, with hemoptysis being the commonit is enough to emphasize that a transbronchial lung biopsy might provide the only tissue available for diagnosis. Since the amount of tissue is small, necrosis and granulomatous vasculitis might not be present. Rather, the diagnostically impoant features are capillaritis and scat- tered, poorly formed granulomas (unlike those of sarcoid- osis, which are rounded and well-defined).