There are several medical case studies and research papers related to renal disorders that can be beneficial for studying for the exam. These studies provide valuable insights into the pathophysiology, diagnosis, and management of various renal conditions. Here are some notable papers and case studies:

1. "Chronic Kidney Disease: Clinical Practice Guidelines for Evaluation and Management" - This research paper published by the National Kidney Foundation provides comprehensive guidelines for the evaluation and management of chronic kidney disease (CKD). It covers topics such as risk factors, diagnostic criteria, and treatment options for CKD.

2. "Acute Kidney Injury: Diagnosis and Management" - This case study published in the New England Journal of Medicine discusses the diagnosis and management of acute kidney injury (AKI). It presents a real-life case and provides insights into the etiology, diagnostic workup, and treatment strategies for AKI.

3. "Polycystic Kidney Disease: A Case Study" - This case study published in the Journal of Renal Nutrition focuses on a patient with polycystic kidney disease (PKD). It explores the clinical presentation, diagnostic approach, and management options for PKD.

4. "Renal Cell Carcinoma: Clinical Presentation and Management" - This research paper published in the Journal of Clinical Oncology discusses the clinical presentation, diagnostic workup, and treatment options for renal cell carcinoma (RCC). It provides valuable information on the different subtypes of RCC and their respective prognosis.

5. "Nephrotic Syndrome: A Case Study" - This case study published in the American Journal of Kidney Diseases presents a patient with nephrotic syndrome. It delves into the etiology, diagnostic evaluation, and treatment modalities for nephrotic syndrome.

These case studies and research papers cover a range of renal disorders, including CKD, AKI, PKD, RCC, and nephrotic syndrome. They offer detailed insights into the clinical presentation, diagnostic approach, and management strategies for these conditions. By studying these papers, you can enhance your understanding of renal disorders and be better prepared for the exam.