I'm 36 Years Old Female, I Had Hematuria 2 Months

I'm 36 years old female, i had hematuria 2 months ago with sever renal colic.. CT scan showed PUJ obstruction due to hematoma. Further US done on discharge and there was no more hematoma.. However i was not given any clear diagnosis! My doctor scheduled MRU for me! Is there any chanse he wants to roule out renal tumer, becuse when ever i asked him if he suspect renal tumer he said no!!
Thank you