A 2O 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. Investigations reveal total leukocyte count 12,000/mm red cell casts in the urine and 12,000/mm serum creatinine 3 ing/dL .What is the most probable diagnosis?
Henoch-Schonlein purpura Polyaeritis nodosa Wegener's granulomatosis Disseminated tuberculosis