Primary intraventricular central nervous system lymphoma in an immunocompetent patient.

We report a young 15-year-old boy with 6 months history of headache, vomiting, and seizure. He underwent septostomy followed by right ventriculoperitoneal shunt for obstructive hydrocephalus and was managed with empirical antituberculosis treatment. Magnetic resonance imaging (MRI) revealed solid, nodular, enhancing masses in bilateral lateral ventricles and 4(th) ventricle.