Article Figures & Data
Figures
- Fig 1.
Case 1. Images of a 48-year-old woman with a dissecting aneurysm of the right PICA.
A, Angiogram shows a dissecting aneurysm arising from the lateral medullary segment of the right PICA (arrow).
B, Angiogram obtained after embolization of the dissecting aneurysmatic segment with coils (arrow).
C and D, Control angiogram shows complete obliteration of the dissecting aneurysmatic segment with preservation of the anterior medullary segment (arrow, C) and distal filling from the AICA (arrowhead, D).
- Fig 2.
Case 4. Images of a 33-year-old man with a dissecting aneurysm of a left AICA-PICA configuration.
A, Angiogram shows dissecting aneurysm arising from a hemispheric branch of a left AICA-PICA (arrow).
B, Angiogram obtained 3 months after embolization shows reopening of the aneurysm (arrow).
C and D, Selective test occlusion by using a GDC coil (arrow) shows distal filling via collaterals (arrowhead, D).
E, Selective injection to the PICA shows the location of the GDC coils used for the test occlusion (arrow).
Tables
Clinical and angiographic data for patients with dissecting posterior inferior cerebellar artery aneurysms
Patient No./Age (y)/Sex Side Site Size (mm) Complications Signs and Symptoms CT and MR Findings Outcome (Follow-up) 1/48/F R Lateral medullary 2.5 × 3 None Neck pain, headache, vomiting SAH and IVH Excellent (30 mo) 2/70/M L Lateral medullary 4 × 3 None Neck pain, headache, loss of consciousness SAH and IVH, hydrocephalus Moderate disability, cognitive problems 3/46/F R Vermian 3 × 10 None Neck pain, headache, loss of consciousness SAH and IVH, mild hydrocephalus Excellent (18 mo) 4/33/M L Hemispheric branch 10 × 20 (partially thrombosed) None Headache, transient dizziness Vascular mass Excellent (12 mo) 5/53/F R Vermian 6 × 5 None Headache, mild cerebellar signs SAH and ICH Excellent (6 mo) 6/45/F R Vermian 3 × 5 None Headache, vomiting, mild cerebellar signs SAH and ICH Excellent (6 mo) Additional studies 45/F L Lateral medullary N/A Mild left-sided dysmetria Neck pain, headache, loss of consciousness SAH and IVH Excellent (N/A) Lefkowitz et al10 34/F L Not reported 15 × 7 Sight hemisensory symptoms Headache, loss of consciousness SAH and IVH Excellent (6 mo) Tikkakoski et al15 63/M R Not reported N/A None Not reported SAH, hydrocephalus Excellent (17 mo) Yamaura et al16 28/M L Vermian N/A None Headache, left hemifacial Normal Excellent (6 mo) Dinichert et al5 Note:—SAH indicates subarachnoid hemorrhage; IVH, intraventricular hemorrhage.
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