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Simple bone cyst of lamina of lumbar spine: a case report
1Clinical Pathology, Uijongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Kyunggi-do, Korea.
Study Design:
A case report and literature review.
Objective:
To describe an extremely rare simple bone cyst involving the lamina of the lumbar spine.
Summary Of Background Data:
Simple bone cysts involving the spine are very rare. Moreover, the authors are unaware of any published report of a simple bone cyst involving the lamina of the spine.
Methods:
A cystic lesion, incidentally identified in a patient with lumbar disc herniation of L5-S1, located at the left lamina of L5, was surgically treated with complete resection of the involved lamina and discectomy of L5-S1. Medical records, imaging studies, histologic findings, and related literature are reviewed in this study.
Results:
Histologic examination of a section of the cystic lesion showed a thin fibrous lining membrane of the cyst surrounded by well-vascularized new bone formation. This result is consistent with the findings of previously reported simple bone cysts in other sites of the body, including the spine.
Conclusion:
This study suggests that a simple bone cyst may be included in the differential diagnosis of a cystic lesion of the posterior elements, especially laminae, of the spine.