caa a22 4500 445329254 CHVBK 20180317142732.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10143-011-0323-8 doi (NATIONALLICENCE)springer-10.1007/s10143-011-0323-8 Subarachnoid hemorrhage and negative angiography: clinical course and long-term follow-up [Elektronische Daten] [Marco Fontanella, Innocenzo Rainero, Pier Panciani, Bawarjan Schatlo, Chiara Benevello, Diego Garbossa, Christian Carlino, Walter Valfrè, Federico Griva, Gianni Bradac, Alessandro Ducati] The aim of this study was to investigate the long-term natural history of nontraumatic angiogram-negative subarachnoid hemorrhage with typical pretruncal (P-SAH) and diffuse (D-SAH) pattern of hemorrhage. A retrospective review of 102 patients who experienced angiographically negative SAH at our institution was undertaken (11.6% of 882 spontaneous SAH). Follow-ups were obtained at 7.9 to 16years. In the D-SAH group, 11 patients (13.9%) out of 79 had an aneurysm, and four (5.1%) had rebleeding episodes. In the P-SAH group, the second angiography was negative in all of the 23 cases, and no rebleeding episodes were recorded. The long-term follow-up confirms that P-SAH is a benign disease. A second angiography could not be necessary. D-SAH is probably due to an aneurysm that thrombose early after the bleeding. At short-term follow-up, the sack could frequently recanalize and rebleed, whereas a late follow-up shows that rebleeding is very rare. Springer-Verlag, 2011 Negative angiography nationallicence Pretruncal subarachnoid hemorrhage nationallicence Intracranial aneurysms nationallicence Subarachnoid hemorrhage of unknown cause nationallicence Angiogram-negative subarachnoid hemorrhage nationallicence Fontanella Marco Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut Rainero Innocenzo Division of Neurology, Department of Neuroscience, University of Torino, Torino, Italy aut Panciani Pier Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut Schatlo Bawarjan Department of Neurosurgery, University Hospital Geneva, Geneva, Switzerland aut Benevello Chiara Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut Garbossa Diego Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut Carlino Christian Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut Valfrè Walter Division of Neurology, Department of Neuroscience, University of Torino, Torino, Italy aut Griva Federico Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut Bradac Gianni Division of Neuroradiology, Department of Neuroscience, University of Torino, Torino, Italy aut Ducati Alessandro Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut Neurosurgical Review Springer-Verlag 34/4(2011-10-01), 477-484 0344-5607 34:4<477 2011 34 10143 https://doi.org/10.1007/s10143-011-0323-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10143-011-0323-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fontanella Marco Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut NATIONALLICENCE 700 1- Rainero Innocenzo Division of Neurology, Department of Neuroscience, University of Torino, Torino, Italy aut NATIONALLICENCE 700 1- Panciani Pier Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut NATIONALLICENCE 700 1- Schatlo Bawarjan Department of Neurosurgery, University Hospital Geneva, Geneva, Switzerland aut NATIONALLICENCE 700 1- Benevello Chiara Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut NATIONALLICENCE 700 1- Garbossa Diego Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut NATIONALLICENCE 700 1- Carlino Christian Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut NATIONALLICENCE 700 1- Valfrè Walter Division of Neurology, Department of Neuroscience, University of Torino, Torino, Italy aut NATIONALLICENCE 700 1- Griva Federico Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut NATIONALLICENCE 700 1- Bradac Gianni Division of Neuroradiology, Department of Neuroscience, University of Torino, Torino, Italy aut NATIONALLICENCE 700 1- Ducati Alessandro Division of Neurosurgery, Department of Neuroscience, University of Torino, Via Cherasco 15, 10126, Torino, Italy aut NATIONALLICENCE 773 0- Neurosurgical Review Springer-Verlag 34/4(2011-10-01), 477-484 0344-5607 34:4<477 2011 34 10143 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer