Spontaneous Regression of Extruded Lumbar Disc Herniation: Three Cases Report
A 74-year-old male was admitted to our emergency room with pain that aggravated a day ago on the right anterior thigh and buttock. He had undertaken discectomy at the L 4-5 level 2 years ago. MR images showed ruptured HNP at the L 1-2 level (). He did not have motor weakness and bladder symptom. We started pain control by intravenous analgesics and muscle relaxant. Pain was subsided and he wanted to be discharged with oral medication. Three months later, he was admitted to our hospital for a follow-up checkup with no symptom. Ruptured HNP was not noted on MR image ().