Normal brain (MRI)

Case contributed by Assoc Prof Frank Gaillard


Vague headaches. Otherwise well.

Patient Data

Age: 20 years
Gender: Female

Normal appearance of a young person's brain on a 1.5T scanner other than borderline low-lying tonsils. Note, however, that McRae’s line (basion to the opisthion) needs to be measured A) in the midline and B) from the tip of the cortical bone - and not the fat-rich bone marrow. The tonsils are rounded (not peg-like) and, although no scale is present to effect a precise measurement, at most these tonsils are 2-4 mm below McRae's line and thus of dubious significance. 
It is unlikely that they are the cause of intermittent headaches. 

Case Discussion

Essentially normal brain MRI for reference. Borderline low lying tonsils.

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