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Carcinoma is a type of cancer that occurs in epithelial cells. Transitional cell carcinoma is the leading type of bladder cancer, occurring in 9 out of 10 cases. [11] It is also the leading cause of cancer of the ureter, urethra, and urachus, and the second leading cause of cancer of the kidney. Transitional cell carcinoma can develop in two ...
Epithelial cells form the lining of the urinary tract. Three types may occur in urine: squamous epithelial cells, transitional epithelial cells and renal tubular epithelial cells. Some laboratories do not distinguish between the three types of cells and simply report "epithelial cells" in general. [104]
Transitional cell carcinoma is a type of cancer that arises from the transitional epithelium, a tissue lining the inner surface of these hollow organs. [1] It typically occurs in the urothelium of the urinary system ; in that case, it is also called urothelial carcinoma .
Bladder tumors are classified by their appearance under the microscope, and by their cell type of origin. Over 90% of bladder tumors arise from the cells that form the bladder's inner lining, called urothelial cells or transitional cells; the tumor is then classified as urothelial cancer or transitional cell cancer.
Urine typically contains epithelial cells shed from the urinary tract, and urine cytology evaluates this urinary sediment for the presence of cancerous cells [2] [3] from the lining of the urinary tract, and it is a convenient noninvasive technique for follow-up analysis of patients treated for urinary tract cancers.
Transitional cell carcinoma is the most common type of bladder cancer and cancer of the ureter, urethra, renal pelvis, the ureters, the bladder, and parts of the urethra and urachus. [ 1 ] [ 2 ] It originates from tissue lining the inner surface of these hollow organs - transitional epithelium .
The most common histology seen in primary urethral cancer (a cancer which originates in the urethra, as opposed to cancer cells from elsewhere in the body which metastasize to the area) is urothelium, a type of transitional epithelium. Urothelial cell cancers comprise just over half of primary urethral cancers.
Ureteral cancer is usually a transitional cell carcinoma. [2] [4] Transitional cell carcinoma is "a common cause of ureter cancer and other urinary (renal pelvic) tract cancers." [1] Because the inside of the ureters and the inside of the bladder contain the same cell type, people who have been diagnosed with ureteral cancer are more likely to ...