Symptomatic Postoperative Spinal Subdural Extra-Arachnoid Hygromas: Resolution with Conservative Management: A Report of 2 Cases.

CASE: Two cases of postoperative spinal subdural extra-arachnoid hygromas were successfully treated with bed rest after patients developed symptoms 4 to 5 days following decompressive lumbar surgery. The development of the hygromas as well as the radiological findings are discussed. CONCLUSION: To the best of our knowledge, these comprise the first postoperative cases successfully treated without surgical re-exploration. This demonstrates conservative management may be a safe and effective management choice.