Neurocysticercosis

To the Editor.  —The diagnosis of neurocysticercosis in man has markedly improved with the development of several neurodiagnostic techniques, including computed tomography (CT),¹ determination of cysticercus antibodies in cerebrospinal fluid by the enzyme-linked immunosorbent assay,² and, more recently, through magnetic resonance imaging (MRI).³However, the diagnosis of the intraventricular type of neurocysticercosis has always been a difficult one, and, in the past, the best way to demonstrate the intraventricular cysts was through the combination of ventriculography with CT, using iodated contrast media (Fig 1).With the development of MRI, we have found that this procedure is more useful for this type of diagnosis, particularly because it is a noninvasive method.Recently, we had a case of intraventricular cysticercosis in which the final diagnosis was obtained by MRI, with a simple maneuver that consisted of performing the MRI first with the patient in the decubitus position (intraventricular cyst into the occipital horn) (Fig 2) and then in the ventral position