Renal Cell Carcinoma

Renal Cell Carcinoma is a type of cancer that starts in the kidneys, which are organs responsible for filtering blood and producing urine. This cancer develops when kidney cells grow uncontrollably, forming a tumor that can affect kidney function. It often causes symptoms like blood in the urine, pain in the side or back, and a noticeable lump in the abdomen. Because the kidneys are part of the urinary system, this disease primarily impacts how the body removes waste and balances fluids. If untreated, the cancer can spread to other parts of the body, making it more difficult to treat. Early detection is important for better outcomes. Smoking, obesity, and certain genetic factors increase the risk of developing this cancer.

Renal Cell Carcinoma (RCC) is a malignant tumor arising from the renal tubular epithelial cells of the kidney cortex. It is the most common type of kidney cancer in adults and is characterized by uncontrolled proliferation of these epithelial cells, often due to mutations in the VHL tumor suppressor gene leading to dysregulation of hypoxia-inducible factors and increased angiogenesis. RCC typically presents with the classic triad of hematuria, flank pain, and a palpable abdominal mass, although many cases are asymptomatic and discovered incidentally on imaging. The tumor can invade the renal vein and metastasize to lungs, bones, and lymph nodes. Histologically, clear cell carcinoma is the most common subtype, distinguished by cells with clear cytoplasm due to lipid and glycogen content. RCC is clinically significant due to its potential for aggressive behavior and resistance to conventional chemotherapy.