caa a22 4500 606217010 CHVBK 20210128101106.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1007/s00701-015-2579-1 doi (NATIONALLICENCE)springer-10.1007/s00701-015-2579-1 Specific and helpful intraoperative indocyanine green videoangiography finding of blood blister-like aneurysm of internal carotid artery [Elektronische Daten] [Moon-Soo Han, Sung-Pil Joo, Seung-Hoon Jung, Tae-Sun Kim] Background: Blood blister-like aneurysms (BBAs) account for 0.5-2.0% of ruptured intracranial aneurysms. Because of their rarity, the natural history and pathophysiology of such aneurysms are not fully understood. We present two patients with BBAs treated with Bemsheets-covered clipping and discuss their pathophysiological characteristics, through the intraoperative and specific indocyanine green (ICG) video angiography (VA) findings. Case report: A 34-year-old male and a 53-year-old female were admitted to our emergency room with suddenly reduced levels of consciousness. Brain imaging studies demonstrated a blood blister-like aneurysm of the supraclinoid segment of the right ICA. Craniotomy and an attempt of surgical clipping were performed. ICG-VA showed the filling defect of dye in aneurysm in the operative field. The BBAs were clipped after being covered by Bemsheets (Kawamoto Corporation, Osaka, Japan) and then confirmed by the ICG-VA. Postoperatively, both patients showed transient neurological deficit due to vasospasms and recovered to their normal statuses within a few months after their respective operations. Conclusions: ICG-VA showed the filling defect of dye in BBAs, which supported that BBAs have been a pseudoaneurysm. In addition, although not routinely recommended in the treatment of BBAs, we believe that Bemsheet-covered clipping is a safe and effective treatment option for BBAs. Springer-Verlag Wien, 2015 Blood blister-like aneurysm nationallicence Pseudoaneurysm nationallicence Indocyanine green nationallicence Internal carotid artery nationallicence Surgery nationallicence Han Moon-Soo Department of Neurosurgery, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Hospital & Medical School, 42, Jebong-ro, 501-757, Gwangju, Donggu, Republic of Korea aut Joo Sung-Pil Department of Neurosurgery, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Hospital & Medical School, 42, Jebong-ro, 501-757, Gwangju, Donggu, Republic of Korea aut Jung Seung-Hoon Department of Neurosurgery, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Hospital & Medical School, 42, Jebong-ro, 501-757, Gwangju, Donggu, Republic of Korea aut Kim Tae-Sun Department of Neurosurgery, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Hospital & Medical School, 42, Jebong-ro, 501-757, Gwangju, Donggu, Republic of Korea aut Acta Neurochirurgica Springer Vienna 157/11(2015-11-01), 1849-1854 0001-6268 157:11<1849 2015 157 701 https://doi.org/10.1007/s00701-015-2579-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00701-015-2579-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Han Moon-Soo Department of Neurosurgery, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Hospital & Medical School, 42, Jebong-ro, 501-757, Gwangju, Donggu, Republic of Korea aut NATIONALLICENCE 700 1- Joo Sung-Pil Department of Neurosurgery, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Hospital & Medical School, 42, Jebong-ro, 501-757, Gwangju, Donggu, Republic of Korea aut NATIONALLICENCE 700 1- Jung Seung-Hoon Department of Neurosurgery, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Hospital & Medical School, 42, Jebong-ro, 501-757, Gwangju, Donggu, Republic of Korea aut NATIONALLICENCE 700 1- Kim Tae-Sun Department of Neurosurgery, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Hospital & Medical School, 42, Jebong-ro, 501-757, Gwangju, Donggu, Republic of Korea aut NATIONALLICENCE 773 0- Acta Neurochirurgica Springer Vienna 157/11(2015-11-01), 1849-1854 0001-6268 157:11<1849 2015 157 701