Colloid Cysts of the Sellar Region
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…
Pseudoaneurysms of the Internal Carotid Artery in the Sellar Region
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…
Traumatic Injury of the Sellar Region, Pituitary Stalk Disruption, and Posttraumatic Anosmia
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…
Spontaneous Abscess of the Sellar Region
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)…
Fibrous Dysplasia
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…
Pituitary Hypoplasia and Other Midline Developmental Anomalies
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…
Carotid Artery Dolichoectasia and Kissing Internal Carotid Arteries
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…
Germ Cell Tumors of the Sellar Region
Fig. 37.1 Germ cell tumor. (a) Sagittal T1-weighted pre-gadolinium image. (b) Sagittal T1-weighted post-gadolinium image. (c, d) Coronal T1-weighted post-gadolinium image. There is a lobular, heterogeneously enhancing mass in the…
Cavernous Malformations (Angiomas) of the Sellar and Suprasellar Region
Fig. 61.1 Cavernous malformation (angioma). (a) Sagittal T1-weighted gadolinium-enhanced MR image showing a multilocular lesion with high signal intensity surrounded by a rim with low signal intensity, continuing anteriorly along…
Vascular Fistulas of the Sellar and Parasellar Region
Fig. 62.1 Cavernous-carotid fistula. (a) Axial T2-weighted MR image. (b) Time-of-flight intracranial MR angiography image. Arterial flow void is observed in the right cavernous sinus (a, arrowhead). The right globe…
