Hirnarterienaneurysma bei Kindern

Preschooler

after cardiac arrest. Axial CT without contrast of the head (above) shows a round mixed density lesion just to the right of the third ventricle along with diffuse subarachnoid hemorrhage and cerebral edema. Axial (below left) and sagittal (below right) CT angiogram shows the lesion to arise from the A1 segment of the right anterior cerebral artery.The diagnosis was giant intracranial aneurysm which had ruptured causing subarachnoid hemorrhage and diffuse cerebral edema.

Quantitative

indices for an intracranial aneurysm and subarachnoid hemorrhage in early childhood: a case report. Plain and contrast-enhanced CT scans of the aneurysm in the present case. A A plain CT on admission in the present case. Arrow indicates the massive hemorrhage and the devoid of hemorrhagic signal (asterisk) in the right MCA region. Arrowheads indicate the prominent midline shift to the left hemisphere. B A plain CT on admission. The hemorrhagic lesion was extended to the surrounding parenchyma involving the caudate and lentiform nuclei (arrows). C A contrast CT shows the presence of an aneurysm located at the right MCA region (asterisk) and subarachnoid hemorrhage (arrowheads). D A stereographic reconstitution of the contrast head CT depicting the fusiform structure of MCA aneurysm (arrow: 21 × 13 × 12 mm in size)

Takayasu

arteritis presenting as cerebral aneurysms in an 18 month old: A case report. Non-contrast head CT (Fig 1A) demonstrates frontal lobe hemorrhage (arrows). Source image from MRA of the brain (Fig 1B) demonstrates 8 mm aneurysm in the distal A1 segment of the right ACA (arrowheads). DSA (AP/oblique) from right ICA injections (Fig 1C) confirms aneurysm of the distal A1 ACA segment. 3-D TOF MRA abdomen (Fig 1D) with bilateral internal iliac artery aneurysms (arrows), narrowing of mid-abdominal aorta (arrowheads), diffusely narrowed bilateral common and external iliac arteries (asterisks). 2-D TOF MRA abdomen (Fig 1E) shows worsening involvement of left common iliac artery (arrows), with right external and internal iliac arterial aneurysms unchanged (arrowheads).

Takayasu

arteritis presenting as cerebral aneurysms in an 18 month old: A case report. H&E stain (200×, Fig 2A; 400×, Fig 2B) from right internal iliac artery shows transmural vasculitis with intimal thickening (asterisks) and giant cells (arrowheads). Elastic stain reveals disruption of elastic lamina (Fig 2C). AP DSA, fusiform aneurysms supraclinoid left ICA (arrowheads; Fig 2D), right ICA (arrowheads; Fig 2E). Note aneurysm clips (arrows). DSA, diminutive, irregular aorta (arrows; Fig 2F). Right common iliac artery not identified (asterisks), no flow distal left common iliac artery (arrowheads). Non-contrast head CT (Fig 2G) demonstrates acute hemorrhage (arrows).