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 12000/mm3, red cell casts in the urine and serum creatinine 3mg/dl.What is most probable diagnosis -
Henoch-Schonlein purpura Polyarteritis nodosa Wegner's granulomatosis Disseminated