Is this cancer? Thing among aged people?

Based on MRI reports attached neurologist forwarded to oncologist and in turn he asked for complete blood test & peripheral smear test (this one will come by Monday evening). Pl go thru the MRI scan observation and blood test results and kindly advise if this is any kind of cancer that my mother is facing ? We don't have pathology ( peripheral blood smear ) report in hand but got the other two blood reports which is attached along with this . Oncologist checked my mom at various touch points and said based on his clinical experience he is not senising any cancer but to confirm it he needs the blood test done . My mother had severe urinary tract infection in Jan 2022 during which WBC was 18000 and by end of Jan after UTI recovery it was 15000 and as of yesterday it is 12200. My mother has no symptoms. Platelets is 2.58 lak/cu mm. Is this observation a common thing among aged people ? Someone pls help.. my family in panic PLS HELP DOCTORS attached - blood report and MRI