A 45-year-old man presents with fatigue and mild lower-extre…
A 45-year-old man presents with fatigue and mild lower-extremity edema. He denies vomiting or diarrhea. Blood pressure is 148/92 mmHg. The patient medical history is unremarkable. Laboratory results are as follows: Serum: Sodium: 140 mmol/L Potassium: 5.8 mmol/L Chloride: 113 mmol/L Bicarbonate: 17 mmol/L BUN: 42 mg/dL Creatinine: 2.6 mg/dL Arterial pH: 7.29 Urinalysis: Urine pH: 5.0 Blood: 2+ RBCs: 25–30 per HPF RBC casts: Present Which of the following types of renal disease most closely fits these data?