A Patient presents with fever, dry cough and breathlessness. He is tachypneic but chest is clear. Oxygen saturation is normal at rest but drops on exercise. What is the single most likely diagnosis?
belongs to book: 1700 MCQ REVISED VERSION TOPIC WISE|DR. KHALID SAIFULLAH|4th EDITION| Chapter number:20| Question number:2
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Medicine
The key is C. Pneumocystis carinii infection. [Fever, dry cough, breathlessness, tachypnoea with clear chest is seen in pneumocystis carinii pneumonia. Normal oxygen saturation which drops on exercise is characteristic of pneumocystis carinii pneumonia].
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