J Korean Soc Spine Surg.  2006 Jun;13(2):147-151. 10.4184/jkss.2006.13.2.147.

Osteoid Osteoma in the Sacrum: A Case Report

Affiliations
  • 1Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
  • 2Department of Orthopedic Surgery, Handong University Sunlin Hospital, Pohang, Korea. msh@sunlin.com

Abstract

Osteoid osteomas occur most commonly in the lumbar spine. However, they rarely occur in the sacrum, and there is no report of such a case in Korea. We report a case of osteoid osteoma in the sacrum in a 15-year-old boy who was treated by a surgical excision with a satisfactory outcome. Although unusual, an osteoid osteoma should be considered when making a differential diagnosis of benign tumors in the sacral areas.

Keyword

Sacrum; Osteoid osteoma

MeSH Terms

Adolescent
Diagnosis, Differential
Humans
Korea
Male
Osteoma, Osteoid*
Sacrum*
Spine

Figure

  • Fig. 1. Preoperative radiographs of the sacrum show osteolytic lesions of sacrum (arrows). (A) Anteroposterior view. (B) Lateral view.

  • Fig. 2. Preoperative CT scans show a low density lesion in which contains high density lesion in the 4th sacrum(arrows). (A) Axial view. (B) Sagittal view.

  • Fig. 3. Preoperative T2-weighted MR image shows high signal intensity area in the 4th sacrum(arrow).

  • Fig. 4. An intraoperative photogragh of the excised mass of the patient shows about 8 mm × 5 mm size.

  • Fig. 5. (A) The histologic examination shows irregular bone trabeculae with prominent vascularity of the intervening tissue (hematoxylin and eosin stain, ×100). (B) At high magnification, the lesional bone is covered by plump but uniform osteoblasts, and one osteoclast(hematoxylin and eosin stain, ×200).


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