case_images: PMC11763383_01
case_images: Dysplastic aneurysms. (a) Pre-interventional 3D angiogram showing two dysplastic aneurysms of both P1/P2 segments. (b) After 3 months, there is no residual inflow into the aneurysm of the left P1/P2 segment. The dysplastic aneurysm of the right P1/P2 segment remained. (c) Postinterventional non-subtracted angiogram. (d) X-ray showing the implanted p48 HPC device in the P1/P2-segments. There is also a clip and two aneurysms of the anterior circulation packed with coils.
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case_images: After clipping and coiling the aneurysms in the anterior circulation, dysplastic aneurysmatic P1/2-segments of the posterior cerebral artery (PCA) on both sides remained (Figure 1).
case_images: PMC11763383_02
case_images: Dysplastic aneurysm with incorporated branch. (a) Pre-interventional 3D angiogram showing the two dysplastic aneurysms of the right A2 segment with planned positioning of the FDS. (b) Direct postinterventional DSA. (c) Follow-up after 6 months shows a completely occluded proximal A2 aneurysm and persisting subtotal filling of the distal aneurysm.
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case_images: Among these, there were two non-ruptured, small dysplastic aneurysms located at the right A2 segment of the anterior cerebral artery (ACA) (Figure 2).
case_images: PMC11763383_03
case_images: Recurrent aneurysm. (a) Right ICA angiogram showing the saccular aneurysm located at the AcomA. (b) Pre-interventional angiogram after clipping of the aneurysm and persisting inflow. (c) Post-interventional angiogram with complete occlusion of the aneurysm. (d) X-ray of the implanted FDS covered by the previously inserted clip.
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case_images: This 70-year-old female patient presented with a saccular AcomA-aneurysm that was initially clipped (Figure 3).
case_images: PMC11763383_04
case_images: Dissecting aneurysm. (a) Native CT scan showing SAH located around the medulla oblongata and the left cerebellar hemisphere. (b) Angiogram of the left VA shows the dissecting aneurysm of the V4 segment. (c) 3D-angiogram with planned positioning of the FDS device. (d) In the FU, after 6 months, there was complete occlusion of the aneurysm.
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case_images: This 48-year-old patient suffered from a ruptured dissecting aneurysm of the left vertebral artery (VA) (Figure 4).
case_images: PMC11763383_05
case_images: Inflammatory aneurysm. (a) Native CT scan showing SAH within the basal cisterns. (b) Postcontrast axial T1-weighted MRI showing bilateral mastoiditis. (c) Pre-interventional right VA angiogram with the two inflammatory aneurysms of the right AICA. (d) Roadmap showing the first delivered p48 HPC and the tip of the microcatheter distally located after perforation of the aneurysm. (e) X-ray after coiling of the perforated proximal AICA aneurysm and after implantation of p48 HPC into the BA. (f) Directly postinterventional DSA with subtotal filling of the proximal and total filling of the distal inflammatory aneurysm.
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case_images: This 67-year-old male patient presented with two inflammatory aneurysms (Figure 5) related to a mastoiditis and osteomyelitis of the skull base and concomitant meningitis.