<prompt>  A 20 year old woman presents with bilateral conductive deafness, palpable purpura on the legs and hemoptysis. Radiograph of the chest shows a thin-walled cavity in left lower zone. Investigation reveal total leukocyte count 12000mm3, red cell casts in the urine and serum creatinine 3mgdl.What is most probable diagnosis -Henoch-Schonlein purpuraPolyarteritis nodosaWegners granulomatosisDisseminated 