title: Coexistence of intervertebral disc herniation with intradural schwannoma in a lumbar segment: a case report.
abstract: BACKGROUND
  Lumbar intervertebral disc herniation and spinal tumor are major pathologies that may cause back pain and radiculopathy. Neurological symptoms resulting from disc herniation and intradural spinal tumor together, however, are very rare.
  
  
  METHODS
  We report a case of lumbar disc herniation which coexists with intradural schwannoma at the same spinal level in a 67-year-old man. The patient presented with persistent low back pain, sciatica, and weakness of the lower limbs. Contrast lumbar spine magnetic resonance (MR) imaging clearly delineated an intradural lesion and an extradural herniated disc at L3/4 level. Using a single posterior approach, both pathologies were addressed. Pathological studies confirmed the intradural lesion was schwannoma.
  
  
  CONCLUSIONS
  The case report highlights a rare concomitance of two symptomatic pathologies in a lumbar spine, which deserves clinical attention. Complete history, careful physical examination, and investigative measures, such as contrast MR imaging, are helpful to establish throughout diagnoses.
authors.affiliation: Spine Lab, Department of Orthopedic Surgery, The 1st Affiliated Hospital of Zhejiang University, 79# Qingchun Road, Hangzhou, 310003, China.
authors.forename: Jianjiang
authors.initials: J
authors.lastname: Pan
authors.affiliation: Spine Lab, Department of Orthopedic Surgery, The 1st Affiliated Hospital of Zhejiang University, 79# Qingchun Road, Hangzhou, 310003, China. wangyuespine@gmail.com.
authors.forename: Yue
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Orthopedic Surgery, Zhejiang Provincial People's Hospital, 158# Shangtang Road, Hangzhou, 310014, China.
authors.forename: Yazeng
authors.initials: Y
authors.lastname: Huang
mesh_terms: D000368:Aged; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications / Q000473:pathology*; D008159:Lumbar Vertebrae / Q000473:pathology*; D008297:Male; D009442:Neurilemmoma / Q000150:complications / Q000473:pathology*; D013120:Spinal Cord Neoplasms / Q000150:complications / Q000473:pathology*
keywords: Intraspinal tumor; Lumbar disc herniation; Schwannoma