system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 73-year-old man comes to the physician because of progressive fatigue and shortness of breath on exertion for 3 weeks. He has swelling of his legs. He has not had nausea or vomiting. His symptoms began shortly after he returned from a trip to Cambodia. He occasionally takes ibuprofen for chronic back pain. He has a history of arterial hypertension and osteoarthritis of both knees. He had an episode of pneumonia 4 months ago. His current medications include lisinopril and hydrochlorothiazide. He has no history of drinking or smoking. His temperature is 37°C (98.6°F), pulse is 101/min, and blood pressure is 135/76 mm Hg. Examination shows pitting edema of the upper and lower extremities. Laboratory studies show:
Hemoglobin 14.1 g/dL
Leukocyte count 6,800/mm3
Platelet count 216,000/mm3
Serum
Urea nitrogen 26 mg/dL
Creatinine 2.9 mg/dL
Albumin 1.6 g/L
Urine
Blood negative
Protein 4+
Glucose negative
Renal biopsy with Congo red stain shows apple-green birefringence under polarized light. Further evaluation of this patient is most likely to show which of the following findings?"
assistant
Rouleaux formation on peripheral smear