Q. A 25-year-old female presents to the emergency department with a 2-week history of increasing fatigue, nausea, vomiting, and lower extremity swelling. She reports no significant medical history but states that she has had an excessive intake of nonsteroidal anti-inflammatory drugs for menstrual cramps over the past year. She is afebrile and her blood pressure is 140/90 mmHg. Lower extremities are edematous, and there is diffuse abdominal tenderness. Urinalysis reveals proteinuria and hematuria. Laboratory Studies reveal hemoglobin is 9.5 g/dL, platelets 200,000/mm3, blood urea nitrogen (BUN) 38 mg/dL, creatinine 2.1 mg/dL, serum albumin 2.0 g/dL, total protein 5.5 g/dL, urinalysis: 3+ proteinuria and 3+ hematuria. Which of the following conditions is the most likely diagnosis?