OBJECTIVE: The most common localization of dysembryoplastic neuroepithelial tumors (DNTs) is the supratentorial cortex, often in the temporal lobe. However, intraventricular localization of a DNT is extremely rare. CLINICAL PRESENTATION: A 30-year-old woman presented with a 1-year history of epileptic seizures. The seizures had not been controlled despite standard doses of antiepileptics. INTERVENTION: Neuroimaging results demonstrated a lesion located in the occipital horn of the right lateral ventricle. The lesion was totally removed. Based on histopathological and immunohistochemical evaluation, a DNT was diagnosed. Over the course of the next 8 months, the patient's epileptic seizures were under control. The most recent neuroimaging examinations revealed neither residual nor recurrent tumor. CONCLUSION: Because DNTs are surgically curable and neither radiotherapy nor chemotherapy is required after surgery, recognition of an intraventricular DNT in this location is extremely important.
OBJECTIVE: The most common localization of dysembryoplastic neuroepithelial tumors (DNTs) is the supratentorial cortex, often in the temporal lobe. However, intraventricular localization of a DNT is extremely rare. CLINICAL PRESENTATION: A 30-year-old woman presented with a 1-year history of epilepticseizures. The seizures had not been controlled despite standard doses of antiepileptics. INTERVENTION: Neuroimaging results demonstrated a lesion located in the occipital horn of the right lateral ventricle. The lesion was totally removed. Based on histopathological and immunohistochemical evaluation, a DNT was diagnosed. Over the course of the next 8 months, the patient's epilepticseizures were under control. The most recent neuroimaging examinations revealed neither residual nor recurrent tumor. CONCLUSION: Because DNTs are surgically curable and neither radiotherapy nor chemotherapy is required after surgery, recognition of an intraventricular DNT in this location is extremely important.