Summary:
The sagittal TI-weighted MR image (figure 1) demonstrates a
low-signal intensity, homo-geneous, extra-axial collection in the
left frontal region with mild mass effect on the adjacent brain
(arrows). The axial T2-weighted MR image (figure 2) shows the
lesion as homogeneous high-signal intensity. The signal in
Findings
The sagittal TI-weighted MR image (figure 1) demonstrates a
low-signal intensity, homo-geneous, extra-axial collection in the
left frontal region with mild mass effect on the adjacent brain
(arrows). The axial T2-weighted MR image (figure 2) shows the
lesion as homogeneous high-signal intensity. The signal intensity
of the lesion exactly follows that of CSF on all pulse sequences.
Also seen on both images is characteristic bony remodeling of the
inner table of the overlying calvarium, indicating the extremely
slow growth of the lesion. No other abnormalities were noted. After
consulting a neurologist, the patient started propranolol 80 mg QD
and naproxen sodium PRN. Six months later, the patient reports no
subsequent headaches.
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