Figure 4c. Supratentorial pilocytic astrocytoma of the temporal lobe. (a) Axial CT image shows a hypoattenuated mass (m) of the right temporal lobe and a soft-tissue mural nodule (n) along its lateral margin. (b) Axial T1-weighted image reveals hypointensity of the mass with slightly higher signal intensity of the mural nodule. (c) Axial T2-weighted image demonstrates predominant hyperintensity of the mass with lower signal intensity of the mural nodule. (d) Contrast-enhanced axial T1-weighted image shows intense enhancement of the mural nodule. Signal intensity of the cyst is higher than that of cerebrospinal fluid within the lateral ventricles, a finding indicative of hemorrhagic or proteinaceous content. (e) Photograph of the resected mural nodule reveals a hemorrhagic mass.