A unique neurosurgery was performed in MC Erebouni. The surgery was performed by the head of the Neurosurgery Department Dr. Mamikon Eghunyan and his team. Neurosurgeons removed a rare brain tumor during one surgery, changing the standard ideas about such surgeries. Such tumors are removed in two stages, but neurosurgeons of MC Erebouni combined two surgeries in one and saved the patient's life.