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Case Reports in Orthopedics
Volume 2016, Article ID 2683797, 4 pages
Case Report

Spinous Process Osteochondroma as a Rare Cause of Lumbar Pain

1Trauma and Orthopaedics Department, Hospital Vila Franca de Xira, 2600 009 Lisbon, Portugal
2Department of Pathology, Hospital Vila Franca de Xira, 2600 009 Lisbon, Portugal

Received 5 April 2016; Revised 9 July 2016; Accepted 12 July 2016

Academic Editor: Koichi Sairyo

Copyright © 2016 Bárbara Rosa et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We present a case of a 5th Lumbar Vertebra (L5) spinous process osteochondroma as a rare cause of lumbar pain in an old patient. A 70-year-old male presented with progressive and disabling lower lumbar pain. Tenderness over the central and left paraspinal area of the lower lumbar region and a palpable mass were evident. CT scan showed a mass arising from the spinous process of L5. Marginal resection of the tumor was performed through a posterior approach. The histological study revealed an osteochondroma. After surgery, pain was completely relieved. After one year there was no evidence of local recurrence or symptoms. Osteochondromas rarely involve the spine, but when they do symptoms like pain, radiculopathy/myelopathy, or cosmetic deformity may occur. The imagiologic exam of election for diagnosis is CT scan. When symptomatic the treatment of choice is surgical resection. The most concerning complication of osteochondromas is malignant transformation, a rare event.