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MR Vol.12 No.2 indexに戻る
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MODERN RHEUMATOLOGY
Vol.12 No.2 |
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Discovertebral lesion in ankylosing spondylitis:
differential diagnosis with discitis by magnetic resonance imaging |
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| K. Tsuchiya1, R. Nagamine1, Y. Iwamoto1 |
| (1)Department of Orthopaedic Surgery, Graduate
School of Medical Sciences, Kyushu University, 3-1-1 Maidashi,
Higashi-ku, Fukuoka 812-8582, Japan |
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| Abstract |
| Abstract Ankylosing spondylitis (AS) is occasionally
accompanied by erosive changes in the vertebral endplate at one or
more restricted levels (Andersson lesions). The radiographic findings
of this lesion are similar to those of bacterial discitis, and a
differential diagnosis between them is often difficult. These diseases
must be diagnosed correctly because they require different treatments.
In order to evaluate the prevalence of Andersson lesions in the Japanese
population, we examined 31 cases of AS which were treated in our
department, and Andersson lesions were found in three (9.7%) of them.
All these three cases developed Andersson lesions in the earlier
phase of the AS, and differentiating the lesions from bacterial discitis
was difficult. The details of these three cases are reviewed, and
the importance of differentiating between Andersson lesions and bacterial
discitis is discussed. Plain radiographs showed no clear difference
between these conditions, but magnetic resonance imaging (MRI) was
found to be more efficient. |
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| Key words |
| Key words Ankylosing spondylitis (AS) ・ Discitis
・ Discovertebral lesion ・ Magnetic resonance imaging (MRI) |
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