ABSTRACT
The majority of intracranial expansive lesions are tumors. However, a wide range of lesions can mimic neoplastic pathology. Differentiating pseudotumoral lesions from brain tumors is crucial to patient management. This article describes the most common intracranial pseudotumors, with a focus on the imaging features that serve as clues to detect pseudotumors.
Subject(s)
Brain Neoplasms , Humans , Diagnosis, Differential , Brain Neoplasms/diagnostic imagingABSTRACT
PURPOSE: The goal of this retrospective study was to investigate the differential diagnosis of endolymphatic hydrops in patients with Meniere's disease (MD) symptoms by using magnetic resonance imaging (MRI) with intravenous injection of gadolinium chelate and delayed acquisition. MATERIAL AND METHOD: Two hundred patients (133 women, 67 men; mean age=67.2±11 ([SD] years) with unilateral MD underwent MRI at 3-T, between 4.5 and 5.5hours after intravenous administration of gadoterate meglumine at a dose of 0.1mmol/kg. MR images were analyzed for the presence of saccular hydrops, perilymphatic fistulae, inner ear malformations, semicircular canal (SCC) abnormal enhancement and brain lesions. We also tested the potential relationship between past history of gentamicin intratympanic administration and perilymphatic fistula presence and SCC aspect. RESULTS: Saccular hydrops were found in 96/200 patients with MD (48%). Three patients (1.5%) had perilymphatic fistulas associated with saccular hydrops, as confirmed by surgery. There was a correlation between the presence of perilymphatic fistula and past history of intratympanic gentamicin administration (P=0.02). We detected inner ear malformations in 5 patients (2.5%), SCC local enhancement in 15 patients (7.5%) always on the same side than the clinical symptoms of MD. There was a correlation between the presence of SCC abnormal enhancement and past intratympanic gentamicin administration (P=0.001). Five patients (2.5%) had brain lesions along central cochleovestibular pathways. CONCLUSION: MRI may reveal brain lesions, SCC abnormalities and perilymphatic fistulae in patients with clinical MD.
Subject(s)
Endolymphatic Hydrops/diagnostic imaging , Magnetic Resonance Imaging , Meniere Disease/complications , Aged , Brain Diseases/diagnostic imaging , Case-Control Studies , Cochlear Diseases/diagnostic imaging , Contrast Media , Diagnosis, Differential , Ear, Inner/abnormalities , Ear, Inner/diagnostic imaging , Female , Fistula/diagnostic imaging , Humans , Male , Retrospective Studies , Semicircular Canals/abnormalities , Semicircular Canals/diagnostic imagingABSTRACT
BREV (Batterie Rapide d'Evaluation des fonctions cognitives) is a new evaluation test for the screening of cognitive disorders in 4-9-year-old children, based on a neuropsychological process. It is made up of 17 subtests which have been carefully standardized. It is not an intelligence test but a tool for children' health professionals to use as a rapid neuropsychological screening test. It is particularly recommended for any child with a school learning disorder or neurological history with a high risk of cognitive disturbances such as epilepsy. It may also be used as a systematic screening test.
