Spinal subdural hematoma post foramen magnum decompression-rare complication in a patient with rhomboencephalosynapsis.

Spinal subdural hematoma (SSDH) as a complication of posterior fossa surgery is extremely rare and can have potentially serious consequences. We report a case of delayed extensive SSHD presenting as cauda equina syndrome (CES) following foramen magnum decompression and occipito-cervical (OC) fusion.