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See Fig. 5.218 A&B. Figure 5.218 Vasculitis. A. Small vessel. B. Large vessel. Before a reasoned and reasonable method for diagnosis histopathologic of vasculitis in skin and subcutaneous fat can be formulated, a definition of vasculitis must be enunciated clearly, one that takes into account both small cutaneous blood vessels, i.e., venules (and, rarely, arterioles), […]