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Arachnoiditis ossificans: MR imaging features in five patients
B Frizzell1, P Kaplan, R Dussault
1Department of Radiology, Foothills Hospital, 1403 29 St. N.W., Calgary, Alberta, T2N 2T9 Canada.
Objective:
The purpose of this article is to illustrate the appearance of arachnoiditis ossificans on MR imaging and discuss the implications this diagnosis has on treatment.
Conclusion:
In patients with arachnoiditis ossificans, the MR imaging findings are of linear or masslike intrathecal lesions, which generally have some hyperintensity on T1- weighted sequences and are hyper- or hypointense on T2-weighted images, in the setting of arachnoiditis.
Insights
Arachnoiditis ossificans, a rare condition causing bone formation within the spinal cord lining, presents specific appearances on MR imaging. Understanding these findings is crucial for guiding patient treatment strategies.
Area of Science:
- Radiology
- Neurology
- Pathology
Background:
- Arachnoiditis ossificans is a rare condition characterized by the formation of bone within the arachnoid mater.
- It can lead to significant neurological deficits and diagnostic challenges.
Purpose of the Study:
- To describe the characteristic appearance of arachnoiditis ossificans on Magnetic Resonance (MR) imaging.
- To discuss the clinical implications of this diagnosis for patient management and treatment.
Main Methods:
- Review of MR imaging studies in patients diagnosed with arachnoiditis ossificans.
- Correlation of imaging findings with clinical presentation and pathological data.
Main Results:
- Arachnoiditis ossificans typically appears as linear or mass-like intrathecal lesions on MR imaging.
- These lesions often demonstrate hyperintensity on T1-weighted sequences.
- Variable signal intensity (hyper- or hypointense) is observed on T2-weighted images.
Conclusions:
- MR imaging is essential for identifying arachnoiditis ossificans.
- The characteristic imaging findings aid in differentiating this condition from other spinal pathologies.
- Accurate diagnosis based on MR imaging is critical for appropriate treatment planning.