HISTORY:
                   A male in his 70s presented with chief complaint of hematuria. Cystourethroscopy showed normal urethra, occlusive prostate, bladder filled with clots and a large tumor occupying almost the entire bladder. CT urogram abdomen/pelvis showed mass-like thickening of the anterior bladder wall, calyceal diverticulum in superior pole of the left kidney and punctate nephrolithiasis without hydronephrosis.
                     
                    
                 
                 
                    GROSS:
                  Received in formalin are numerous fragments of red-tan tissue aggregating to 7.0 cm x 4.5 cm x 3.2 cm.
                     
                  
                    
                 
						
                         
			             
                       
			             
			            
			                
			             
                       
			             
			            
                      
                
                    
                 
                            What is the most likely diagnosis?
                            
                               - Nested Variant of Urothelial Carcinoma
 
                                - Lipoid-Rich Variant of Urothelial Carcinoma
 
                                - Invasive urothelial carcinoma with divergent morphologies: glandular, rhabdoid and plasmacytoid variants
 
                                - Invasive urothelial carcinoma with divergent morpholgies: micropapillary and tubular variants
 
                                - Invasive urothelial carcinoma with  divergent morpholgies: sarcomatoid and glandular variants
 
                            
                          
                       
                         
                        
                         
                            
                         
                               Invasive urothelial carcinoma with divergent morphologies: glandular, rhabdoid and plasmacytoid variants