Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs41016-021-00245-1/MediaObjects/41016_2021_245_Fig1_HTML.png)
a Unsubtracted left ICA injection showing a broad-based BBLA of the supraclinoid ICA. b Under road mapping, a microcatheter was successively placed in proximity to the BBLA and deploy a 0.027-in. microcatheter across the entry point of the BBLA. c left ICA injection after Pipeline flow-diverting stent-assisted coiling showing the BBLA was embolized