RT Journal Article SR Electronic T1 Subdural hematoma complicating middle fossa arachnoid cyst JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 119 OP 120 VO 5 IS 2 A1 Mubaidin, Ammar F. A1 Shurbaji, Amer A. YR 2000 UL http://nsj.org.sa/content/5/2/119.abstract AB We report a case of a middle aged patient with middle fossa arachnoid cyst that was complicated by subdural hematoma. This was demonstrated by magnetic resonance imaging that remain the most useful diagnostic tool, and providing excellent tissue specificity. Patient was treated by irrigating the hematoma through burrholes. Magnetic resonance imaging in the postoperative period showed a reduction in size of the arachnoid cyst.