Preeclampsia is a condition that usually occurs after the 20th week of pregnancy and is often accompanied by hypertension and proteinuria. Eclampsia is accompanied by convulsions. Presented herein is a case of a 32-year-old, 32-week pregnant woman, who presented with generalized tonic-clonic seizures and developed respiratory arrest, thus an emergency cesarean section was performed. The seizures did not stop in the postoperative period, and a brain tumor was diagnosed with magnetic resonance imaging. Therefore, every pregnant patient with convulsion, as in our case, should not only be considered as eclampsia but with other possible causes in the differential diagnosis.