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Diffuse intervertebral disk calcification in a patient with rheumatoid arthritis.
M Nakamura1, S Shiokawa, Y Miyazaki
1Department of Anatomy and Cell Biology, University of Tokushima School of Medicine, Japan.
The Journal of Medical Investigation : JMI
|October 6, 2000
Summary
This study reports the first case of intervertebral disk calcification (IDC) in a patient with seronegative rheumatoid arthritis (RA). The patient showed no other diseases but had significant polyclonal hypergammaglobulinemia.
Area of Science:
- Rheumatology
- Radiology
- Immunology
Background:
- Rheumatoid arthritis (RA) is a chronic autoimmune disease primarily affecting joints.
- Intervertebral disk calcification (IDC) is a rare condition with various potential causes.
- Seronegative RA lacks specific autoantibodies, making diagnosis challenging.
Observation:
- A patient with seronegative RA presented with calcification in thoracic and lumbar intervertebral disks.
- No evidence of ochronosis or hemochromatosis was found.
- Significant polyclonal hypergammaglobulinemia was a notable laboratory finding.
Findings:
- This case represents the first documented instance of IDC in a patient diagnosed with RA.
- Magnetic resonance imaging (MRI) T1-weighted images did not show increased signal intensity in the calcified disks, a finding debated in literature.
- The presence of polyclonal hypergammaglobulinemia may be associated with this rare presentation.
Implications:
- This case expands the spectrum of potential spinal manifestations in RA.
- Further research is needed to understand the link between RA, hypergammaglobulinemia, and IDC.
- Highlights the importance of considering diverse etiologies for IDC in patients with autoimmune conditions.