Fig. 48.1 Fibrosarcoma. Sagittal noncontrast MRI of the pituitary (arrows) shows a spontaneously sclerosing epithelioid fibrosarcoma extending superiorly to the optic chiasm (Adapted with permission from Massier et al. [11].)…
Fig. 34.1 Optic glioma. (a) Axial T2-weighted image. (b) Coronal T2 inversion-recovery (IR) image. (c) Axial T1-weighted gadolinium-enhanced image. The optic nerves are diffusely enlarged bilaterally, with enhancement extending to…
Fig. 46.1 Sinonasal adenocarcinoma. Coronal MRI shows an invasive mass (arrow) arising from the left middle turbinate, with extension to the ethmoid sinus, maxillary sinus, and floor of the orbit…
Fig. 27.1 Colloid cyst. (a) Sagittal T1-weighted post-gadolinium image. (b) Coronal T1-weighted post-gadolinium image. A lobular cyst with a thin rim of enhancement is centered in the sella, with suprasellar…
Fig. 74.1 Digital subtraction angiography (DSA) image of pseudoaneurysm. This anterior-posterior projection following left internal carotid artery (ICA) injection shows a small, medially projecting aneurysm arising from the cavernous segment…
Fig. 72.1 Traumatic injury to anterior skull base fracture. (a) Sagittal CT image reconstructed in bone algorithm. (b) Coronal CT image with intravenous contrast enhancement. Comminuted fractures of the planum…
Fig. 51.1 Bacterial sellar abscess. Preoperative MR images of a patient with a history of remote prior transsphenoidal surgery for a pituitary tumor and a bacterial sellar abscess: Sagittal (a)…
Fig. 70.1 Fibrous dysplasia. (a) Coronal T1-weighted precontrast MR image. (b) Coronal T1-weighted gadolinium-enhanced image. (c) Sagittal T1-weighted gadolinium-enhanced image. (d) Axial T1-weighted gadolinium-enhanced image. An expansile lesion is centered…
Fig. 68.1 Pituitary hypoplasia. (a) Sagittal T1-weighted precontrast MR image. (b) Coronal T1-weighted precontrast image. The anterior pituitary gland is hypoplastic and the posterior pituitary T1 shortening is visible in…
Fig. 63.1 Dolichoectasia. (a, b) Axial T2-weighted MR images. (c) Maximum-intensity-projection (MIP) time-of-flight MR angiography. The intracranial internal carotid arteries appear ectatic, with marked tortuosity, in a 10-year-old boy with…
