PMC5565389_01
Radiotherapy planning image with the dose distribution illustrated in color.. Notes: (A) Axial, (B) coronal, and (C) sagittal images. The planning target volume was the whole-brain parenchyma excluding HA region.. Abbreviation: HA, hippocampus-avoiding.
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The plan consisted of nine static fields to cover the planning target volume, with a dose of 25 Gy administered in 10 fractions while avoiding the hippocampus (Figure 1).
Brain magnetic resonance images showing a 36x31 mm metastatic mass in the right perihippocampal area.. Note: (A) Axial, (B) coronal, and (C) sagittal images.
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Brain MRI at 7 months after HA-PCI completion showed a 36x31 mm, well-marginated, heterogeneously enhancing mass in the right HA (perihippocampal) region with surrounding edema (Figure 2).