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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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What diagnosis is suggested by these spirography findings?
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The correct answer is  Answer A. Intrathoracic localized obstructionAn intrathoracic localized obstruction is demonstrated on spirography. The patient underwent flexible fiberoptic bronchoscopy, which revealed nearly complete (greater than 90%) occlusion of the distal trachea by a vascular mass. The patient recovered after endoscopic laser ablation of the mass.