Multifocal lateral and fourth ventricular B-cell primary CNS lymphoma

We present the case of a 65-year-old woman presenting with 2 eeks history of intractable vomiting and headaches. CT followed y MRI of the brain showed two homogenously enhancing intraentricular masses, one each in the lateral and fourth ventricles. urgical exploration and biopsy performed from the lateral venricular mass demonstrated a high-grade B-cell lymphoma. Such ultifocal presentation of intraventricular lymphoma has not been eported so far. Although there is an increase in the number of ases of primary CNS lymphomas in the recent past, this case is elieved to be the tenth case report of an intraventricular primary NS lymphoma and the first ever case report that describes the imultaneous involvement of both the lateral and fourth ventricles. e suggest that primary B-cell lymphoma should always be conidered in the differential diagnosis of enhancing intraventricular esions, even in immunocompetent individuals.