|
FIG 3. Patient 4. Pre- and post-treatment images in a patient with a third ventricular choroid plexus papilloma.
A, Pretreatment FLAIR images at the level of the foramen of Monro and the lateral ventricles (top row) reveal the presence of the third ventricular choroid plexus papilloma. Ventricular dilatation and a grade 1 PVH are present. The Dav value was 1.08, 21% above normal. Dav maps at the corresponding levels (bottom row) show no evidence of abnormal signal intensity in the periventricular region.
B, Post-treatment images obtained on day 6 after tumor resection. On the FLAIR images (top row), the ventricles are smaller than before, and the PVH has decreased. Postoperative subdural collections are present. The Dav value has decreased to 0.87 (19% change) (bottom row).
C, Subsequent FLAIR images obtained 7 months after surgery reveal no evidence of tumor recurrence (top row). Subdural collections have resolved. The Dav value is 0.85, which is normal for the patient’s age (bottom row).
|