Premium
Endoscopic removal of herniated nucleus pulposus migrated dorsally to the dural sac
Author(s) -
Koga S,
Sairyo K,
Kon T,
Shibuya I,
Kanamori Y,
Kosugi T,
Konno R,
Arai T,
Dezawa A
Publication year - 2011
Publication title -
asian journal of endoscopic surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.372
H-Index - 18
eISSN - 1758-5910
pISSN - 1758-5902
DOI - 10.1111/j.1758-5910.2010.00060.x
Subject(s) - medicine , surgery , laminotomy , nerve root , dermatome , endoscope , arachnoiditis , anatomy , endoscopy , laminectomy , spinal cord , psychiatry
A herniated nucleus pulposus (HNP) migrated dorsally to the dural sac is a rare condition. Here, we present a case, in which the HNP was removed with minimally invasive spinal endoscopy. A 54‐year‐old man presented complaining of left leg pain and paresis. Neurologic findings and an MRI suggested an epidural tumor or a dorsally migrated HNP compressing the S1 nerve root and dural sac. With a spinal endoscope, careful laminotomy of caudal L5 and cranial S1 was made. En bloc flavectomy exposed a mass covered with a thin capsule. The mass was identified as a dorsally migrated HNP. After complete HNP fragment removal, the dural sac and S1 nerve root were decompressed. Immediately postoperative, the leg pain subsided and motor function normalized, although the patient complained of numbness at the S1 dermatome area. In summary, a large HNP that had migrated dorsally to the dural sac was successfully removed endoscopically.