Spinal epidural hematoma (SEH) is an uncommon entity.
Chronic SEHs are rarer than acute SEHs.
May be caused by traumatic or nontraumatic conditions that include coagulopathy, vascular lesions and iatrogenic or idiopathic causes.
Yamao et al first reported a operative and histological observation of recurrent spontaneous spinal epidural hematoma caused by a posterior venous plexus 1)
In the presence of an epidural mass with clear clinical symptomatology, rare entities like chronic epidural hematoma or posterior migrated disk material should be always considered as a differential diagnosis in patients with suspicion of extradural chronic compressions. In these cases, only the intraoperatory and histopathological exams can provide a clear diagnosis 2).