Surgical clipping is still a good choice for the treatment of paraclinoid aneurysms.
Paraclinoid aneurysms are lesions located adjacent to the clinoid and ophthalmic segments of the internal carotid artery. In recent years, flow diverter stents have been introduced as a better endovascular technique for treatment of these aneurysms.


METHODS
From 2009 to 2014, a total of 43 paraclinoid aneurysms in 43 patients were surgically clipped. We retrospectively reviewed the records of these patients to analyze clinical outcomes.


RESULTS
Twenty-six aneurysms (60.5%) were ophthalmic artery aneurysms, while 17 were superior hypophyseal artery aneurysms (39.5%). The extradural approach to the clinoid process was used to clip these aneurysms. One hundred percent of aneurysms were clipped (complete exclusion in 100% on follow-up angiography). The length of follow-up ranged from 1 to 60 months (mean, 29.82 months).


CONCLUSIONS
Surgical clipping continues to be a good option for the treatment of paraclinoid aneurysms.
Departamento de Neurocirurgia, Hospital do Servidor Público Estadual de São Paulo, IAMSPE, Sao Paulo, SP, Brazil.
Felix Hendrik
FH
Pahl
Departamento de Neurocirurgia, Hospital do Servidor Público Estadual de São Paulo, IAMSPE, Sao Paulo, SP, Brazil.
Matheus Fernandes
MF
de Oliveira
Departamento de Neurocirurgia, Hospital Sirio Libanês, Sao Paulo, SP, Brazil.
Roger Schmidt
RS
Brock
Departamento de Neurocirurgia, Hospital Sirio Libanês, Sao Paulo, SP, Brazil.
José Erasmo Dal Col
JE
Lucio
Departamento de Neurocirurgia, Hospital do Servidor Público Estadual de São Paulo, IAMSPE, Sao Paulo, SP, Brazil.
José Marcus
JM
Rotta
D000328:Adult; D000368:Aged; D002340:Carotid Artery Diseases / Q000601:surgery*; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging / Q000601:surgery; D002533:Cerebral Angiography; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008866:Microsurgery / Q000295:instrumentation / Q000379:methods*; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging / Q000601:surgery*; D011183:Postoperative Complications; D012189:Retrospective Studies; D012307:Risk Factors; D018709:Statistics, Nonparametric; D013525:Surgical Instruments; D016896:Treatment Outcome; D014656:Vascular Surgical Procedures / Q000295:instrumentation / Q000379:methods*