The kidneys and urinary tract perform essential homeostatic and excretory functions, and a wide spectrum of diseases can compromise them. This book organizes nephrology and urology topics into clear clinical chapters: acute kidney injury, chronic kidney disease, glomerular disorders, stone disease, and urinary tract infections, among others. Diagnostic workflows (urinalysis, imaging, biopsy interpretation) and therapeutic modalities (immunosuppression, dialysis, transplant care) are described in actionable detail. Emphasis is placed on interdisciplinary care, complication prevention, and patient education for long-term management. Targeted to nephrologists, urologists, and internal-medicine trainees.