Fig. 6.1 A supraorbital flap (dark black), based on the true keyhole, may be modified by involving more of the lateral orbit, extending medially (bifrontal) or extending temporally with or…
Fig. 55.1 Racemose neurocysticercosis in the pituitary gland. (a) Sagittal MR section showing many cystic membranes without a scolex in grapelike clusters in the sellar and suprasellar regions, suggesting racemose…
Fig. 33.1 Cavernous sinus cavernous hemangioma. (a) Axial T2-weighted MRI showing a rounded, hyperintense lesion in the left parasellar region and cavernous sinus. (b) Axial T1-weighted MRI shows the same…
Fig. 36.1 Granular cell tumor. (a) Coronal T1-weighted pre-gadolinium image. (b) Coronal T1-weighted post-gadolinium image. (c) Sagittal T1-weighted post-gadolinium image. (d) Coronal T2-weighted image. There is a hypoenhancing mass in…
Fig. 35.1 Pituicytoma. (a) Sagittal T1-weighted precontrast image. (b) Coronal T1-weighted gadolinium-enhanced image. There is a hypoenhancing lesion in the right aspect of the sella, without suprasellar extension. Remodeling of…
Fig. 15.1 Thyrotroph (TSH) adenoma. (a) Sagittal T1-weighted post-gadolinium image. (b) Coronal T1-weighted post-gadolinium image. A cystic, enhancing mass is present in the superior anterior part of the sella. There…
Fig. 32.1 Hemangioblastoma. (a, b) T1- and T2-weighted MRI scans taken 2 years prior to presentation. (c) This T1-weighted MRI scan reveals a partly vesicular, hyperintense, and slightly increased (vs…
Fig. 29.1 Hemangiopericytoma. (a) Sagittal T1-weighted gadolinium-enhanced image. (b) Coronal T1-weighted gadolinium-enhanced image. An enhancing mass is seen in the sellar and suprasellar region, arising from the region of the…
Fig. 19.1 Pituitary carcinoma. (a) Sagittal T1-weighted pre-gadolinium image. (b) Coronal T1-weighted post-gadolinium image. (c) Sagittal T1-weighted post-gadolinium image. (d) Coronal T1-weighted post-gadolinium image. There is a large, heterogeneously enhancing…
Fig. 16.1 Gonadotropin-secreting adenoma. Gonadotropin-secreting adenomas or gonadotroph cell adenomas are characteristically chromophobic tumors (a) with diverse histopathological arrangements. Tumors may have papillary arrangements (b), nested arrangements (c), and focal…
