This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood Vessels, Subject name: Pathology
[{'content': "A 40yr old male presenting with URTI, hemoptysis and has elevated cANCA value is most likely having \nSelect and explain. \nA. Churg strauss syndrome, B. Wegner's granulomatosis, C. Microscopic polyangitis, D. Good Pasteurs syndrome", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans: b) Wegner's granulomatosis Wegner's granulomatosis is a necrotizing vasculitis characterized by:i) Acute necrotizing granuloma of URT/LRTii) Necrotizing vasculitis involving small to medium vesselsiii) Renal disease - focal necrotizing crescentic glomerulitiscANCA is positive in 95% of all patients with acute generalized disease. Arise in titre suggest relapse.cANCA typically found in Wegner's granulomatosispANCAMicroscopic polyangitisChurg strauss syndromeGood pasteur's syndromeIdiopathic crescentic glomerulonephritis", 'role': 'assistant'}]