20 weeks scan help please !!!!

Ashley
So I had my 20 weeks ultrasound and saw baby moving stron heart rate and measuring perfect except the cerebellum, this is what we on my after visit. 
"Cerebellum is subjectively normal it reported at <5th percentile by there new software. Which is considered to be erroneous. " what would you ladies think of this. My dr didn't seem to bugged by it. 

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