Anatomic Bases of Medical, Radiological and Surgical Techniques
Evidence of areas of increased attenuation density within lateral ventricles at computed tomography (CT) of the brain is a finding of acute or subacute intraventricular hemorrhage. The purpose of this case report is to describe a 14-year-old female who presented with an episode of complicated migraine. Brain CT showed an area of high attenuation density (35 Hounsfield Units) in the trigone and occipital horn of the right lateral ventricle, mimicking a blood-fluid level from subacute intraventricular hemorrhage. Magnetic resonance imaging (MRI) of the brain showed that this resulted from gray matter lining a deep calcarine fissure. A deep calcarine fissure may mimic intraventricular hemorrhage at CT. Correct CT and MRI interpretation allows to avoid invasive diagnostic tests including lumbar puncture or intra-arterial catheter angiography.
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Conflict of interest
All the authors have no disclosures.
Given CA 2nd, Burdette JH, Elster AD et al (2003) Pseudo-subarachnoid hemorrhage: a potential imaging pitfall associated with diffuse cerebral edema. AJNR Am J Neuroradiol 24:254–256PubMedGoogle Scholar
Horsburgh A, Massoud TF (2013) The circumventricular organs of the brain: conspicuity on clinical 3T MRI and a review of functional anatomy. Surg Radiol Anat 35(4):343–349PubMedCrossRefGoogle Scholar
Iaria G, Petrides M (2007) Occipital sulci of the human brain: variability and probability maps. J Comp Neurol 501:243–259PubMedCrossRefGoogle Scholar
Iaria G, Robbins S, Petrides M (2008) Three-dimensional probabilistic maps of the occipital sulci of the human brain in standardized stereotaxic space. Neuroscience 151:174–185PubMedCrossRefGoogle Scholar
Kiroglu Y, Karabulut N, Oncel C et al (2008) Cerebral lateral ventricular asymmetry on CT: how much asymmetry is representing pathology? Surg Radiol Anat 30(3):249–255PubMedCrossRefGoogle Scholar
Lévêque C, Sabbah P, Ait-Ameur A et al (2002) Morphological imagery of the occipital lobe. J Fr Ophtalmol 25:1067–1072PubMedGoogle Scholar
Savas R, Sener RN (1998) Deep calcarine sulcus and prominent calcar avis. J Neuroradiol 25:144–146PubMedGoogle Scholar