Complete response to radiation therapy of orbital metastasis from hepatocellular carcinoma

Figure 1 Axial (A) and coronal (B) T2 weighted MRI of the brain demonstrating the large soft tissue mass in the superior and lateral aspect of the right orbit (white arrows) prior to radiation treatment and resolution of mass on follow-up MRI 12 mo after treatment on axial (C) and coronal images (D).

Figure 2 Three-dimensional contours for treatment planning demonstrate the gross target volume (GTV) encompassing the tumor (red contour) and the planning target volume (PTV, black contour) on initial (A) and boost (B) CT images. Doses from the initial 7 field intensity modulated radiation (IMRT) plan (A) are represented as color wash according to the scale shown in the figures, representing the range of 95% through 20% of dose coverage. The 7 field IMRT plan for the coned-down field (B) shows even tighter dose coverage and greater sparing of the right optic nerve (pink contour).