Plse Doctor Just I Have An Inquare About Ct Brain

plse doctor
just I have an inquare about ct brain result.
CT BRAIN PLAIN:


No intra- or extra-axial haematoma evident.
No cerebral parenchymal area of abnormal attention value evident.
Normal size and shape of the ventricular system with no midline shift.
Posterior fossa structures show no gross abnormality.
Scanned PNS appear clear
Mildly DNS

what is mildly DNS
thanks