شاب طويل نحيف عمره ٢٠ سنة جاء بألم صدري مفاجئ في اليمين مع ضيق نفس بسيط. أصوات التنفس ضعيفة في اليمين والقرع رنان جداً. ما التشخيص الأرجح؟

A tall thin 20-year-old has sudden right-sided chest pain with mild dyspnoea; breath sounds are reduced on the right and percussion is hyper-resonant. What is the likely diagnosis?

1. Acute lobar pneumonia
2. Right pleural effusion
3. Spontaneous pneumothorax
4. An acute asthma attack

Answer: C) Spontaneous pneumothorax. Primary spontaneous pneumothorax is common in tall thin young men and smokers. Hyper-resonance with reduced sounds on one side indicates pleural air; effusion and consolidation give dullness.