Fig. 1. T2 weighted sagittal ( a ) and axial ( b ) magnetic resonance images depicting a large epidural mass ( arrows ) in the dorsal left lateral aspect of the spinal canal extending from T6 to T9 with anterolateral spinal cord displacement and compression ( chevron ). The epidural mass was predominantly clear fluid ( i.e. , cerebrospinal fluid and analgesic infusate; large arrows ) with only a scant amount of blood ( small arrow ).