Craniopharyngiomas
Fig. 21.1 (a) Sagittal T1-weighted pre-gadolinium image. (b) Coronal T1-weighted post-gadolinium image. A large mass with heterogeneous signal intensity is centered in the sella with a large cystic suprasellar component…
Rathke Cleft Cysts
Fig. 22.1 Rathke cleft cyst. (a) Sagittal T1-weighted post-gadolinium image. (b) Coronal T1-weighted post-gadolinium image. A homogeneous, nonenhancing lesion is seen in the posterior sella, displacing the pituitary gland anteriorly….
Meningioma of the Sellar and Parasellar Region
Fig. 28.1 Meningioma. (a) Sagittal T1-weighted gadolinium-enhanced image. (b) Coronal T1-weighted gadolinium-enhanced image. A large, enhancing mass is centered in the left parasellar region, with involvement of the sella. The…
The Direct Endoscopic Endonasal Transsphenoidal Approach to the Pituitary Gland
Fig. 5.1 Extended endoscopic approaches allow access from the anterior skull base anteriorly to the foramen magnum and upper cervical spine inferiorly (Courtesy of Dr. Luigi Cavallo) 5.2 Comparison of…
Somatotroph (GH) Adenomas
Fig. 12.1 Growth hormone (GH)–secreting adenoma. (a) Axial noncontrast CT scan with bony windowing. (b) Intraoperative endoscopic photo. The CT scan shows the large caliber and prominence of the internal…
Imaging of the Sellar Region
Fig. 2.1 CT image in sagittal-plane reformation shows the shape and size of the sella, with the pituitary gland and stalk clearly visualized In evaluating sellar lesions, CT has an…
Nonfunctioning Pituitary Adenomas
Fig. 10.1 Nonfunctioning pituitary adenoma. (a) Sagittal T1-weighted post-gadolinium image. (b) Coronal T1-weighted post-gadolinium image. A hypoenhancing sellar mass remodels the sellar floor and abuts the cavernous internal carotid arteries…
Metastatic Tumors to the Pituitary Gland
Fig. 50.1 Metastasis from breast cancer. (a) Sagittal T1-weighted gadolinium-enhanced MR image. (b) Coronal T1-weighted gadolinium-enhanced image. A large, heterogeneously enhancing mass is centered in the sella with suprasellar extension….
Atypical Pituitary Adenomas
Fig. 18.1 Atypical pituitary adenoma. (a) Sagittal T1-weighted post-gadolinium image. (b) Coronal T1-weighted post-gadolinium image. A large, heterogeneously enhancing sellar mass demonstrates suprasellar extension and encasement of the right cavernous…
Cerebral Aneurysms with Intrasellar Extension
Fig. 59.1 The progressive growth pattern of cavernous and clinoid segment internal carotid artery (ICA) (infradiaphragmatic) aneurysms (a–c)medially into the sella, causing compression of the pituitary gland (Courtesy of Dr….
