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What is 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. 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 ? and explain in detail?
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