Computed tomography of axial skeletal osteoid osteomas

Area of Science:

• Orthopedic Surgery
• Radiology
• Oncology

Background:

• Osteoid osteomas are benign bone tumors that can be challenging to diagnose, especially in the complex axial skeleton.
• Conventional radiography and tomograms often fail to clearly delineate these lesions.
• Accurate localization is critical for successful surgical excision, which is curative for osteoid osteoma.

Purpose of the Study:

• To evaluate the role of computed tomography (CT) as a diagnostic tool for axial skeletal osteoid osteomas.
• To assess CT's ability to precisely localize osteoid osteomas for surgical planning.

Main Methods:

• Retrospective review of five cases of axial skeletal osteoid osteomas.
• Analysis of diagnostic imaging, including conventional radiographs, bone scans, and computed tomography (CT).
• Correlation of imaging findings with surgical outcomes.

Main Results:

• Conventional radiographs were normal in all five patients.
• Bone scans were positive and aided in lesion localization, directing CT.
• CT scans accurately demonstrated the location, nidus, and characteristic features of osteoid osteoma in all cases.

Conclusions:

• Computed tomography is an invaluable tool for diagnosing osteoid osteomas in the axial skeleton.
• CT's detailed cross-sectional imaging enables precise anatomic localization, facilitating optimal surgical approaches and potentially more limited resections.
• CT significantly improves diagnostic accuracy when conventional imaging is insufficient.