To demonstrate the histological trends and variations amongst UAE population in the cohort of the patients presenting to Tawam hospital as a tertiary referral center.

Record of 139 patients were reviewed, underdoing Transurethral resection of the bladder tumour (TURBT).  This included all of transurethral resections of the bladder tumour performed during the period of January 2019 till 31st of May 22. Histology report were analysed for the tumour type, tumour grade and depth of invasion along with operation notes for tumour size and focality (unifocal/multifocal), location and the findings of the bimanual examination. These cases were subsequently reviewed at the weekly urology MDT and reviewed by the MDT uro-pathologist.

Histology	                                                  Cancer grade	     Depth of Invasion	                                 Total/Percentage
Transitional cell carcinoma	                      High 	                             pT1	                                                    43           30.9%
	                                                                      High	                             pT2	                                                    36            25.8%
	                                                                      High 	                             pTa	                                                    31            22.3%
	                                                                      Low 	                             pTa	                                                    14            10.0%
	                                                                      Low 	                             pT1	                                                    1                 7.1%
Prostatic adenocarcima			                                                                                                                    5                 3.5%
Urachal 
Adeno carcimoa			                                                                                                                                     3                 2.1%
Rhadomyosarcoma 			                                                                                                                             1                 0.7%
Cervical cancer			                                                                                                                                      1                 0.7%
Poorly differentiated			                                                                                                                              1                 0.7%
Serious Carcinoma			                                                                                                                              1                 0.7%
Inflammation only 			                                                                                                                               2                1.4%
Multifocal			                                                                                                                                               133          95.6%
unifocal			                                                                                                                                                        6                4.3%

Histology	                                                  Cancer grade	     Depth of Invasion	                                 Total/Percentage
Transitional cell carcinoma	                      High 	                             pT1	                                                    43           30.9%
	                                                                      High	                             pT2	                                                    36            25.8%
	                                                                      High 	                             pTa	                                                    31            22.3%
	                                                                      Low 	                             pTa	                                                    14            10.0%
	                                                                      Low 	                             pT1	                                                    1                 7.1%
Prostatic adenocarcima			                                                                                                                    5                 3.5%
Urachal 
Adeno carcimoa			                                                                                                                                     3                 2.1%
Rhadomyosarcoma 			                                                                                                                             1                 0.7%
Cervical cancer			                                                                                                                                      1                 0.7%
Poorly differentiated			                                                                                                                              1                 0.7%
Serious Carcinoma			                                                                                                                              1                 0.7%
Inflammation only 			                                                                                                                               2                1.4%
Multifocal			                                                                                                                                               133          95.6%
unifocal			                                                                                                                                                        6                4.3%

Patient referred to or presenting to Tawam Hospital, Contrary to the peer review reports where low grade non muscle invasive carcinoma is the most common variant. This Cohort had high grade pT1 as most common histological variant, followed by high grade Muscle invasive pT2 , high grade pTa is the next most common histological subtype.  Low grade pTa /T1 the least common sub type.
Tawam experience of bladder cancer histology demonstrating different histological trends and variations.  Broader studies are needed to assess histological variations within the UAE papulation.