Kidney or Renal cancer occurs when the number of abnormal cells increases in or near the kidney organ. The kidneys are paired, bean-shaped, blood filtering organs, which sits on either side of the backbone and are attached to the upper back wall of the abdomen.
It is made up of small functional units known as nephrons, which constitute the medulla and cortex of the kidney. Three layers surround the kidney: an innermost renal capsule made up of dense irregular connective tissue, a middle adipose layer made up of fatty tissue, and an outermost renal fascia (also known as Gerota’s fascia) made up of dense irregular connective tissue.
Renal cell carcinoma (RCC) (affecting tubules in kidneys) is the most commonly encountered (90% of the cases) kidney cancer. RCCs are further divided into following subtypes based on their histology (appearance under a microscope): clear cell RCC, papillary RCC, chromophobe RCC, multilocular cystic RCC, collecting duct RCC, medullary carcinoma, mucinous tubular and spindle cell carcinoma, neuroblastoma-associated RCC, and unclassified lesions.
Let's understand kidney cancer with the help of these explainer videos and infographics: