TVEUS are rare lesions representing 5% of UC. This retrospective study carried out in the urology department of HMIMV Rabat over a period of 6 years from 2017 to 2022 allowed us to count 32 cases.In addition to the risk factors common to bladder tumors, TVEUS present specific risk factors, which remain little researched in our hospital center, namely environmental factors and the criteria suggesting a familial form obtained by a guided interview. A history of bladder tumor seems to influence overall survival.The clinical diagnosis is most often hematuria in 82% of cases but non-specific in only one of this case in our series, there are non-specific forms which can lead to a delay in treatment. The morphological diagnosis is based on a Uroscanner or a Uro-MRI. In recent decades we have seen an explosion in the USSR diagnosis allowing a biopsy to be carried out at the same time in order to obtain the histological type and grade.