case_images: PMC5234300_01
case_images: Contrast-enhanced T1-weighted magnetic resonance imaging in coronal view showing a nonfunctioning pituitary adenoma. The tumor size was 2.5 x 2 x 2 cm, with suprasellar extension and compression of the optic chiasm
case_images: SNI-7-1053-g001.jpg
case_images: PMC5234300_01_SNI-7-1053-g001.jpg
case_images: F1
case_images: A previously healthy 46-year-old man was referred to our clinic because of visual symptoms and a nonfunctional pituitary adenoma with suprasellar growth that compressed the optic chiasm [Figure 1].
case_images: Digital subtraction angiography of the right common carotid artery in lateral view: (a) image in arterial phase showing a lesion in the sphenopalatine artery (arrow); (b) a later image showing arteriovenous shunt with venous filling (arrow) and extravasation of contrast agent (black arrow)
case_images: SNI-7-1053-g002.jpg
case_images: PMC5234300_01_SNI-7-1053-g002.jpg
case_images: F2
case_images: Digital subtraction angiography (DSA) of the right common carotid artery revealed irregularities in the wall of the right sphenopalatine artery and an arteriovenous shunt to a vein directed toward the internal jugular vein, with contrast agent extravasation at the fistula point [Figure 2].
case_images: Digital subtraction angiography after microcatheterization of the right sphenopalatine artery showing the arteriovenous fistula before embolization: (a) Anterior posterior view; (b) lateral view
case_images: SNI-7-1053-g003.jpg
case_images: PMC5234300_01_SNI-7-1053-g003.jpg
case_images: F3
case_images: A microcatheter was navigated into the sphenopalatine artery [Figure 3], and embolization of the arteriovenous fistula was done using 0.5 ml glue (N-butyl-2-cyanoacrylate and Lipiodol in proportion 1:2).
case_images: Digital subtraction angiography of the right common carotid artery in anterior posterior view: The arteriovenous fistula is occluded and the posterior septal branch of the sphenopalatine artery (arrow) is occluded
case_images: SNI-7-1053-g004.jpg
case_images: PMC5234300_01_SNI-7-1053-g004.jpg
case_images: F4
case_images: Angiography of the right common carotid artery did not show any remaining arteriovenous shunt or contrast agent extravasation; the posterior septal branch of the sphenopalatine artery was occluded [Figure 4], indicating this branch as the lesion site.