Postlaminectomy ossified extradural pseudocyst. Case report.

Tsuji, H; Handa, N; Handa, O; Tajima, G; Mori, K · J Neurosurg · 1990

case_report · Level V

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Abstract

A large ossified spurious meningocele accompanied by recurrent lumbar disc herniation occurred 7 years after posterior intervention for laminectomy and discectomy in a 53-year-old man. The cyst wall, histologically composed of mature bone tissue, was sparsely covered with connective tissue and lined with fibrocyte- or fibroblast-like cells on the inside. The ossified pseudocyst was presumed to have originated from a minute defect in the dura mater which occurred at the time of the first operation.

Medical subject headings

Anatomy