A 32-year-old female, life-long non-smoker with a history of mild asthma, previously well controlled with inhalers, but no other significant medical history. She has recently run out of her 'blue' inhaler. She presented to the emergency department after several hours of coughing and difficulty in breathing, with a shorter history of rapid onset of unilateral chest pain and worsening shortness of breath. Examination findings: Pulse - 90 beats per minute at rest Blood pressure - 120/80 Respiratory rate - 18 per minute Peak Expiratory Flow (PEF) is 70% of predicted.

She is able to speak in full sentences. An X-ray image is provided. What is the most likely diagnosis? *This case is from Docplexus editorial team for educative purpose only Source: Free Medical MCQs Stay connected, the answer will be posted soon!