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AJNR - American Journal of Neuroradiology

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Spontaneous Partial Thrombosis of a Basilar Artery Giant Aneurysm in a Child

Elisa F. M. Ciceri^a, Alison L. Lawhead^a, Tiziana De Simone^a, Luca Valvassori^b and Edoardo Boccardi^b

^a Department of Neuroradiology, Istituto Nazionale Neurologico "Carlo Besta", Milan, Italy
^b Department of Neuroradiology, Ospedale "Niguarda Ca’Granda", Milan, Italy

View larger version (177K): [in a new window]   FIG 1. Left vertebral artery angiogram, obtained 11 days after the initial symptoms, demonstrates the presence of the BA aneurysm. At both edges of the aneurysm, stenosis of the BA is recognizable (arrows).

View larger version (164K): [in a new window]   FIG 2. MR image, obtained concurrently with the DSA image, demonstrates the thrombotic component located peripherally (arrowheads). The patent lumen is indicated (arrow). Small ischemic areas on the left side of the pons are also visible.

View larger version (152K): [in a new window]   FIG 3. Follow-up angiogram, obtained 11 months after the onset of symptoms, shows complete obliteration of the BA at the level of the dissection, without any evidence of residual filling of the aneurysm.