Postlaminectomy ossified extradural pseudocyst. Case report.
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.
Department of Orthopedic Surgery, Toyama Medical and Pharmaceutical University, Japan.
H
H
Tsuji
N
N
Handa
O
O
Handa
G
G
Tajima
K
K
Mori
D002114:Calcinosis / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000473:pathology / Q000601:surgery; D007796:Laminectomy / Q000379:methods; D008159:Lumbar Vertebrae / Q000473:pathology / Q000601:surgery; D008297:Male; D008588:Meningocele / Q000209:etiology* / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D011183:Postoperative Complications