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…
Demyelinating Diseases: Multiple Sclerosis and Neuromyelitis Optica
Fig. 58.1 Neuromyelitis optica (NMO). (a) Coronal fat-saturated T1-weighted gadolinium-enhanced MR image. (b) Coronal inversion recovery image. (c) Sagittal T1-weighted gadolinium-enhanced image. The left optic nerve demonstrates edema (b) and…
Invasive Fungal Sinusitis and Fungal Abscess of the Sella
Fig. 52.1 Allergic fungal sinusitis. (a) Sagittal T1-weighted precontrast image. (b) Sagittal CT image with contrast enhancement. (c) Coronal T1-weighted gadolinium-enhanced image. There is expansion of the sphenoid sinus containing…
Silent Corticotroph (ACTH) Adenomas
Fig. 14.1 Silent corticotroph (ACTH) adenoma. (a, b) Sagittal T1-weighted post-gadolinium image. (c) Coronal T1-weighted post-gadolinium image. There is a large, heterogeneously enhancing sellar mass with suprasellar extension and encasement…
