<prompt> Which is associated with vasculitis of medium sized vesselsTemporal aeritisWegeners granulomatosisPolyaeritis nodosaHenoch schalein purpura  <response>: Refer robbins 9e p506 Polyaeritis nodosa PAN, is a systemicnecrotizing inflammation of blood vessels vasculitis affecting medium-sized muscular aeries, typically involving the aeries of the kidneys and other internal organs but generally sparing the lungs circulation. Polyaeritis nodosa may be present in infants. In polyaeritis nodosa, small aneurysms are strung like the beads of a rosary, therefore making rosary sign an impoant diagnostic feature of the vasculitis. PAN is associated with infection by the hepatitis B or hepatitis Cvirus 