This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary Bladder, Subject name: Pathology
Most common bladder cancer - 
Select and explain. 
A. SCC, B. Transitional cell carcinoma, C. Sarcoma, D. Lymphoma
B: Transitional cell carcinoma
Answer: B: Transitional cell carcinoma 
Explanation: Ans. is 'b' i.e.. Transitional cell carcinoma Bladder Carcinomao Bladder cancer accounts for approximately 7% of cancers and 3% of cancer mortality in the United States,o About 95% of bladder tumors are of epithelial origin, the remainder being mesenchymal tumors.o Most epithelial tumors are urothelial (transitional cell) type and are thus interchangeably called urothelial or transitional tumors, but squamous and glandular carcinomas also occur.