Journal of Neurology Research, ISSN 1923-2845 print, 1923-2853 online, Open Access
Article copyright, the authors; Journal compilation copyright, J Neurol Res and Elmer Press Inc
Journal website https://jnr.elmerpub.com

Case Report

Volume 15, Number 4, December 2025, pages 211-217


Delayed Development of an Occult Pseudoaneurysm After Coiling of a Ruptured Anterior Communicating Artery Aneurysm

Figures

Figure 1.
Figure 1. (a) Plain CT showing interhemispheric blood and hematoma (20.07 mm). (b) Three-dimensional (3D) reconstruction angiography showing an anterior communicating aneurysm arising from the anteroinferior wall. Note the irregularity observed in A1 segment (arrow). (c) 3D reconstruction angiography showing no abnormality on the posterosuperior wall of the ACoA (arrow). (d) Anteroposterior view angiography showing the ACoA aneurysm. (e) Oblique working projection pre-coiling of the ACoA aneurysm. Note the irregularity observed in A1 segment (arrow). (f) Oblique projection angiography post coiling of the ACoA aneurysm. ACoA: anterior communicating artery; CT: computed tomography.
Figure 2.
Figure 2. (a) Plain CT showing increase in the transverse diameter of the interhemispheric hematoma (28.35 mm). (b) Oblique view two-dimensional (2D) angiography showing no change in the coiled aneurysm morphology. CT: computed tomography.
Figure 3.
Figure 3. (a) Plain CT showing significant enlargement of the interhemispheric hematoma. (b) Anteroposterior view angiography showing developing of a pseudoaneurysm. (c) Three-dimensional (3D) angiography showing the development of a pseudoaneurysm opposite the previously coiled aneurysm. (d) Post-clipping subtracted angiography showing disappearance of the pseudoaneurysm. (e) Post-clipping native subtracted angiography showing disappearance of the pseudoaneurysm. CT: computed tomography.
Figure 4.
Figure 4. (a) CTA showing recurrence of the pseudo sac post clipping. (b) Native angiography showing recanalization of the pseudoaneurysm. (c) Subtracted angiography post coiling of the pseudoaneurysm. (d) Subtracted angiography showing early recanalization of the pseudoaneurysm base. (e) Native acquisition showing the flow diverter deployed in the left side. CT: computed tomography.
Figure 5.
Figure 5. (a) Anteroposterior view of right internal carotid angiography showing no filling of the aneurysm. (b) Anteroposterior view of left internal carotid angiography showing no filling of the aneurysm.
Figure 6.
Figure 6. Timeline figure summarizing the chronological sequence of interventions and hemorrhagic events. ACoA: anterior communicating artery; CT: computed tomography; 2D: two-dimensional.