An 84-year-old woman has been admitted to the emergency department with an acutely swollen and painful left knee. She was suffering from a productive cough and fever from last one week. From the last 24 hours, she was unable to bear weight because of her knee pain. Her left knee is held rigid in fixed flexion and is hot and red with a moderate effusion.
There is decreased expansion on the right side, with dullness to percussion, increased vocal resonance, and coarse crackles at the base PMH: Diabetes Examination and investigation She is unwell, sweaty, and febrile. PR : 108 bpm BP : 98/60 mmHg RR : 22/min Hb : 14.2 g/dL WCC : 18.3 x 10 9 /L Platelets : 542 x 10 9 /L ESR : 45 mm/h CRP : >160 mg/L Chest X-ray : Right basal consolidation Oxygen saturation on room air is 92% What is the most likely diagnosis? *This case is from the Editorial team of Docplexus and is meant for…
