Transitional Cell Carcinoma (TCC) is a type of cancer that primarily affects the bladder, but it can also occur in the ureters and renal pelvis. This cancer originates in the transitional cells, which are specialized cells that line these organs. TCC is the most common form of bladder cancer and can vary in severity, often requiring early detection for effective treatment. Symptoms of TCC may include blood in the urine, frequent urination, and pain during urination. Diagnosis typically involves imaging tests and a biopsy. Treatment options may include surgery, chemotherapy, and immunotherapy, depending on the stage and grade of the cancer.