Tang R, Li F, Chen Q. A case report of atypical long segmental thoracic hypertrophic pachymeningitis with ossification of ligamentum flavum and literature review.
EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2017;
26:202-206. [PMID:
28365857 DOI:
10.1007/s00586-017-5030-x]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Accepted: 03/02/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND
Thoracic spinal stenosis caused by ossification of ligamentum flavum (OLF) is frequently seen, but long segmental thoracic spinal cord compressed by consequent thickened ligament posteriorly was rarely reported.
OBJECT
To report a case of thoracic spinal cord compression caused by atypical long segmental thoracic hypertrophic pachymeningitis (HP) with OLF.
METHODS
A 55-year-old woman presenting with weakness and numbness in lower extremities was admitted to our department. Combined with physical examination and MRI results, diagnosis of HP with OLF was considered. Due to progressive neurological symptoms, thoracic decompression with internal fixation was performed.
RESULTS
The patient felt a reduced numbness and improvement in motor functions 5 days after surgery. Pathological examination suggested the diagnosis of HP with OLF.
CONCLUSIONS
HP is a rare condition characterized as thickening and enhancement of the dura mater on contrast-enhanced MRI and chronic inflammatory hyperplasia changes on biopsy. A case of atypical HP complicated with OLF is described. Chondrocytes infiltration in histological examination indicates the potential of ossification in HP.
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