case_images: PMC11090582_01
case_images: (a and b) Magnetic resonance imaging revealing acute cerebral infarction in the right frontal lobe near the left lateral ventricle. (c) Computed tomography revealed an intracerebral hemorrhage in the left frontal lobe. (d) A three-dimensional computed tomography angiography image showing an aneurysm in the distal middle cerebral artery (white arrow). (e) Axial computed tomography angiography reveals bleeding from the aneurysm (white arrow).
case_images: SNI-15-119-g001.jpg
case_images: PMC11090582_01_SNI-15-119-g001.jpg
case_images: F1
case_images: He also developed hypoesthesia in the left lower limb, and magnetic resonance imaging showed multiple bilateral acute cerebral infarcts [Figures 1a and b]. Computed tomography revealed an intracerebral hemorrhage in the left frontal lobe [Figure 1c], and computed tomography angiography demonstrated an aneurysm in the distal middle cerebral artery, which was determined to be the source of the hemorrhage [Figures 1d and e].
case_images: (a) Hematoxylin and eosin staining revealed inflammatory cell infiltration, with partial disruption of the aneurysm wall. The endothelium is obscured, and there is neutrophilic infiltration with a hemorrhage. The asterisk indicates the intra-aneurysmal lumen. (b) Elastica van Gieson staining shows a loss of the internal elastic lamina (white arrows). The asterisk indicates the intraaneurysmal lumen.
case_images: SNI-15-119-g002.jpg
case_images: PMC11090582_01_SNI-15-119-g002.jpg
case_images: F2
case_images: The pathological findings suggested a ruptured ICMA [Figures 2a and b].