The bladder is an expandable, hollow organ in the pelvis that storesurine (the body’s liquid waste) before it leaves the body duringurination. The urinary tract is made up of the kidneys, ureters,bladder, and urethra and is lined with a layer of cells called theurothelium. This layer of cells is separated from the muscularispropria (bladder muscles) by the lamina propria (a thin, fibrous band).
Bladdercancer is a cancerous tumor that begins when cells in the bladderbecome abnormal and grow uncontrollably, forming a mass of tissue. Itis described as either noninvasive or invasive. Noninvasive cancer doesnot spread through the lamina propria, and invasive cancer can spreadthrough the lamina propria. Noninvasive cancer may also be calledsuperficial cancer, although that term is being used less often becauseit may incorrectly imply that this type of cancer is not serious.Invasive cancer is subdivided as either cancer that only grows into thelamina propria or cancer that grows into the muscle layer. If you knowsomething about bladder cancer please write.
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