title: [Incidental aneurysms and perimesencephalic subarachnoid haemorrhages].
abstract: A perimesencephalic subarachnoid hemorrhage refers to the presence of bleeding around the midbrain with a normal angiography, meeting the well established clinical criteria and radiological criteria. Unlike the aneurysmal subarachnoid hemorrhage, it has a good prognosis, the recovery in most cases being complete and satisfactory. On the other hand, between 2 and 5% of the population will develop an intracranial aneurysm in the course of their life, most of them asymptomatic, with the likelihood of finding an incidental aneurysm in patients who have suffered a perimesencephalic hemorrhage. The importance of a proper diagnosis governs the course to follow, being a challenge for vascular treatment teams who must analyse the findings in detail and individualize treatment decisions.
authors.affiliation: Servicio de Radiodiagnóstico, Complejo Hospitalario Universitario de Vigo, Vigo, España. Electronic address: rojasamc@gmail.com.
authors.forename: A
authors.initials: A
authors.lastname: Rojas Jiménez
authors.affiliation: Servicio de Radiodiagnóstico, Complejo Hospitalario Universitario de Vigo, Vigo, España.
authors.forename: P
authors.initials: P
authors.lastname: Martínez Cueto
authors.affiliation: Servicio de Radiodiagnóstico, Complejo Hospitalario Universitario de Vigo, Vigo, España.
authors.forename: O
authors.initials: O
authors.lastname: Vila Nieto
authors.affiliation: Servicio de Radiodiagnóstico, Complejo Hospitalario Universitario de Vigo, Vigo, España.
authors.forename: E
authors.initials: E
authors.lastname: Vázquez Fernández
mesh_terms: D005260:Female; D006801:Humans; D033162:Incidental Findings; D002532:Intracranial Aneurysm / Q000150:complications* / Q000175:diagnosis*; D008636:Mesencephalon / Q000098:blood supply*; D008875:Middle Aged; D013345:Subarachnoid Hemorrhage / Q000150:complications*