In this study, a series of 10 cases of abscess of the posterior cerebral fossa is analysed. In our department, the incidence of this condition is 2 cases per year. These predominantly occur in juvenile male and are frequently caused by adjacent ENT disease. Numerous therapeutic approaches are possible. In our series, 3 patients underwent emergency surgery with simultaneous treatment of the abscess of the ear. A second series of 6 patients underwent delayed treatment of the ENT infection (over 2 weeks) after the emergency puncture of the abscess. The rapid and good recovery of the 3 patients who underwent simultaneous petromastiodectomy and puncture of the abscess during surgery should be emphasized.