Fig. 3From: Pituitary adenoma apoplexy caused by rupture of an anterior communicating artery aneurysm: case report and literature reviewCraniotomy images. a A tumor in the optic chiasm was observed. The carotid artery, optic nerve, and tumor were clearly displayed. b, c Images of the anterior communicating artery aneurysm (before and after clipping) are displayed. d The surroundings were explored after aneurysmal closure. The aneurysm was observed to be encased by the surrounding tumorBack to article page