MRI locates a posterior fossa aneurysm in the fourth ventricle

• Published in: Clinical neurology and neurosurgery Vol. 100; no. 3; pp. 216 - 218
• Main Authors: Schelhaas, H.J, Brouwers, P.J.A.M, van der AA, H.E, Prevo, R.L
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-09-1998; Elsevier Science
• Subjects: Aged; Aneurysm, Ruptured - diagnosis; Arteries - pathology; Autopsy; Biological and medical sciences; Cerebellum - blood supply; Cerebral Angiography; Cerebral Ventricles - pathology; Cranial Fossa, Posterior; Fatal Outcome; Humans; Intracranial Aneurysm - diagnosis; Intraventricular aneurysm; Magnetic Resonance Imaging; Male; Medical sciences; MRI; Neurology; PICA-aneurysm; Vascular diseases and vascular malformations of the nervous system; PICA-aneurysm; MRI; Intraventricular aneurysm; Human; Inferior posterior cerebellar artery; Intracranial; Nervous system diseases; Aneurysm; Cardiovascular disease; Exploration; Male; Nuclear magnetic resonance imaging; Artery; Cerebral disorder; Arterial disease; Vascular disease; Case study; Central nervous system disease; Tissue rupture; Medical imagery; Posterior fossa; Cerebrovascular disease
• ISSN: 0303-8467; 1872-6968
• DOI: 10.1016/S0303-8467(98)00032-8

We report a rare case of a ruptured aneurysm of the choroidal branch of the left posterior inferior cerebellar artery (PICA) located in the fourth ventricle. Digital subtraction angiography revealed this PICA aneurysm but the exact location remained unknown. The unique location in the fourth ventricle was subsequently shown by magnetic resonance imaging (MRI). The patient died and the final diagnosis was confirmed by autopsy. To our knowledge, this is one of the few reported cases of a PICA aneurysm in the fourth ventricle and the only one which was confirmed by the combination of MRI and autopsy.