The kidneys are two bean-shaped organs located on either side of the spine, just below the rib cage. They play a crucial role in filtering waste products, excess fluids, and toxins from the blood to form urine. Each kidney contains about a million tiny filtering units called nephrons that help maintain the body’s fluid balance, regulate blood pressure, and control electrolyte levels. The filtered urine travels through the ureters to the bladder for storage and eventual elimination. In addition to filtration, the kidneys also produce important hormones that support red blood cell production and bone health. Healthy kidney function is essential for overall well-being.
Each kidney is made up of several key parts that work together to filter blood and produce urine. The renal cortex is the outer layer where initial filtration begins, while the renal medulla contains pyramid-shaped structures that collect and transport filtered fluid. Inside each pyramid are nephrons, the functional units that filter blood and form urine. The renal pelvis is a funnel-shaped structure that collects urine from the medulla and passes it into the ureter. Blood enters through the renal artery and exits via the renal vein, ensuring continuous circulation for waste removal and fluid balance.
Polycystic Kidney Disease (PKD) is a genetic disorder in which numerous fluid-filled cysts develop in the kidneys, causing them to enlarge and lose function over time. These cysts can grow very large and crowd out healthy kidney tissue, leading to reduced filtering ability. PKD can cause symptoms such as high blood pressure, back or side pain, blood in the urine, and frequent kidney infections. As the disease progresses, it may lead to chronic kidney failure. The condition is typically inherited and can affect one or both kidneys. Early diagnosis and proper management are key to slowing down its progression.