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normal kidney measurements
its a size of a cyst or lump
it might be a cyst or a mass
10 mm
milimeters
6mm obvious
9 millimeters
The size of a small ball bearing.
3 mm is about an eighth of an inch; 7 mm is a bit more than a quarter inch.
7 mm is about a quarter inch and 3 mm about an eighth of an inch.
It certainly wouldn't be a small one.
It might mean "9 cm 8 mm"