Failure to detect unintentional myelography during percutaneous epidural adhesiolysis: a report of two cases

Abstract

Percutaneous epidural adhesiolysis (PEA) uses a larger volume of drug solution than epidural block and it can be dangerous if the solution is misadministered into the subarachnoid space. Detection of myelography findings during PEA is very important to avoid subarachnoid block, but this can be sometimes difficult to determine. We report two cases in which PEA was performed under biplane fluoroscopic guidance; however, we could not detect a myelogram that overlapped with an epidural contrast image. We should always keep in mind that unintentional myelography are always possible during PEA, and CT scan should be performed to detect unintentional myelography.