HISTORY:
                    A male patient in his 60s with known history of right clear cell renal cell carcinoma presented with a bladder lesion.
                    Routine CT surveillance imaging found a nodular density in the bladder, protruding into the lumen.
                    The patient underwent a cystoscopy that showed a column shaped nodular tumor located on the anterior bladder wall.
                    After that, he was admitted for a transurethral resection of bladder tumor.
                     
                 
                   
GROSS:
                
                 
                
                
                
                 
                 
                  
                
                 
                           
                
                    
                 
                            What is the most likely diagnosis?
                            
                                - Sarcoma of the urinary bladder
 
                                - Angiosarcoma of the bladder
 
                                - Bladder hemangioma
 
                                - Angiosarcoma of the bladder