Prolactinomas
Fig. 11.1 Prolactinoma. (a) Sagittal T1-weighted post-gadolinium image. (b) Coronal T1-weighted post-gadolinium image. A small, hypoenhancing sellar mass is present in the left aspect of the sella. The mass abuts…
NEUROSURGERY
Plasmacytoma
Fig. 40.1 Plasmacytoma. (a) Sagittal T1-weighted precontrast image. (b) Axial T1-weighted precontrast image. (c) Axial T1-weighted gadolinium-enhanced image. There is an expansile, homogeneously enhancing mass replacing the entire clivus. The…
Gangliocytoma and Ganglioglioma
Fig. 42.1 Gangliocytoma in the presence of a prolactinoma. This sagittal T1-weighted gadolinium-enhanced MR image shows a heterogeneously enhancing mass of the sellar region with sellar expansion (Adapted with permission…
Empty Sella Syndrome
Fig. 67.1 Empty sella syndrome. (a, b) Coronal T1-weighted gadolinium-enhanced MR images. The pituitary gland appears flattened, with increased cerebrospinal fluid (CSF) space above the gland. The optic chiasm is…
Schwannomas of the Sellar and Parasellar Region
Fig. 30.1 Schwannoma of the trigeminal nerve. Coronal T1-weighted gadolinium-enhanced MR image. A large enhancing mass is centered in the left parasellar region Fig. 30.2 Trigeminal schwannoma. (a) Axial T1-weighted…
Pituitary Apoplexy
Fig. 17.1 Pituitary apoplexy. (a) Sagittal T1-weighted pre-gadolinium image. (b) Coronal T1-weighted pre-gadolinium image. (c) Sagittal T1-weighted post-gadolinium image. (d) Coronal T1-weighted post-gadolinium image. Within the sella, there is an…
Sellar Tuberculosis
Fig. 54.1 Sellar tuberculoma. (a) Sagittal T1-weighted gadolinium-enhanced image. (b) Coronal T1-weighted gadolinium-enhanced image. A heterogeneously enhancing mass of the sella and suprasellar region is visualized. A patchy area of…
Inflammatory Hypophysitis
Fig. 57.1 Lymphocytic hypophysitis. (a) Sagittal T1-weighted gadolinium-enhanced MR image. (b) Coronal T1-weighted gadolinium-enhanced image. Nodular thickening involves the superior pituitary stalk. The pituitary gland appears normal in size Fig….
Fibrosarcoma of the Sellar Region
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].)…
Optic Pathway (Opticochiasmatic) and Hypothalamic Gliomas
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…
