[Mount Fuji sign in postoperative period after surgery for ependymoma of the third ventricle (V3): case report and review of the literature].

Mount Fuji sign also known as compressive pneumocephalus is a redoubtable postoperative neurosurgical complication. We report the clinical case of a 10 months-old patient, hospitalized in reanimation for postoperative management following surgery for ependymoma of the third ventricle. The evolution was marked by the occurrence of early postoperative compressive pneumocephalus, responsible for neurological and hemodynamic worsening.