Snapshot A 75-year-old woman returns from a week-long cruise with a cough and sputum production. Her family notices that she seems more confused than usual and brings her into the hospital. Earlier today, she had complained of nausea and vomiting. On physical exam, her pulse is 60/min. There are fine crackles diffusely on chest auscultation. Laboratory tests show that she has hyponatremia and mildly elevated transaminitis. A urine antigen test is positive for the suspected disease and she is started on antibiotics. Introduction Classification login to view 7 more bullets Associated conditions login to view 4 more bullets Epidemiology Demographics login to view 1 more bullet Risk factors login to view 4 more bullets ETIOLOGY Pathogenesis login to view 2 more bullets Presentation Symptoms login to view 7 more bullets Physical exam login to view 5 more bullets Imaging Chest radiography login to view 5 more bullets Studies Labs login to view 8 more bullets Making the diagnosis login to view 1 more bullet Differential Mycoplasma pneumoniae login to view 2 more bullets Treatment Medical login to view 6 more bullets Complications Respiratory failure