Inflammation of multiple blood vessel s involving more than one type of vessel, e.g., arteries and veins, or arterioles and capillaries.
- microscopic p. systemic, nongranulomatous small-vessel vasculitis, associated with glomerulonephritis, pulmonary capillaritis, palpable purpura, and antineutrophil cytoplasmic autoantibodies.

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poly·an·gi·itis (pol″e-an″je-iґtis) inflammation involving multiple blood or lymph vessels.

Medical dictionary. 2011.

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