FIGURE 1.
Case 1 neuroimaging. Preoperative sagittal T1-weighted (A), postcontrast T1-weighted coronal (B), and postcontrast T1- weighted axial (C) MR images demonstrate a left infratentorial tumor. Arrows indicate the tumor in (A). Note tumor protrusion into the posterior fossa and compression of the brainstem. Attachment to the inferior aspect of the tentorium and dural tail (arrow) is evident in (C). (D) Preoperative fluid-attenuated inversion recovery image demonstrates tumor and edema in the pons and cerebellum. (E) Postoperative T1-weighted MR image with contrast demonstrates surgery-related changes and absence of tumor. The coexisting pituitary tumor is also enhanced. (F) Postoperative T1-weighted MR image with contrast demonstrates an enhancing recurrent tumor in the tegmental pons and middle portion of the temporal lobe. Some delayed postoperative changes are also present.