Fig. 47.1 Sinonasal undifferentiated carcinoma (SNUC). (a) Sagittal T1-weighted gadolinium-enhanced MR image. (b) Coronal T1-weighted gadolinium-enhanced image. A large, heterogeneously enhancing mass involves the nasal cavity and ethmoid and sphenoid…
Fig. 64.1 Sheehan’s infarction. (a) Sagittal T1-weighted precontrast MR image. (b) Coronal T1-weighted gadolinium-enhanced image. (c) Sagittal T1-weighted precontrast image. (d) Sagittal T1-weighted gadolinium-enhanced image. The pituitary gland is markedly…
Fig. 45.1 Sinus malignancy: melanoma. (a) Sagittal CT image with contrast enhancement. (b) Sagittal T1-weighted gadolinium-enhanced MR image. (c) Coronal T1-weighted gadolinium-enhanced image. A heterogeneously enhancing mass is centered in…
Fig. 60.1 Arteriovenous malformation (AVM) of the parasellar region. (a) Axial T2-weighted MR image. (b) Coronal contrast-enhanced CT image. Multiple tangles of the arteries and veins are present in the…
Fig. 24.1 Petrous apex cholesterol granuloma. (a) Axial CT image with contrast enhancement. (b) Coronal CT image with contrast enhancement. (c) Axial T1-weighted gadolinium-enhanced image. (d) Coronal T1-weighted gadolinium-enhanced image….
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. 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. 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. 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…
