R Ozaras1, B Karaismailoglu2, A Vatan2, Z Hasiloglu3, S Sahin, B Oz4. 1. Department of Infectious Diseases, Cerrahpasa Medical School Istanbul University, Istanbul, Turkey rozaras@yahoo.com. 2. Department of Infectious Diseases, Cerrahpasa Medical School Istanbul University, Istanbul, Turkey. 3. Department of Neuroradiology, Cerrahpasa Medical School Istanbul University, Istanbul, Turkey. 4. Department of Pathology, Cerrahpasa Medical School Istanbul University, Istanbul, Turkey.