Case 1: "A 52-year-old man presents with fever and lower back pain for 6 days"
Case 2: "A 72-year-old woman with polyarthritis for 3 days"
Case 3: "A 87-year-old man presents with progressive dyspnea for 3 days"
Case 4: "67-year-old male presents with progressive weakness for 1 month "
Case 5: "A 61-year-old female presents with protrusion of the right eye for 2 weeks"