Aneurysmal bone cyst:: value of MR imaging and conventional radiography

被引:75
作者
Mahnken, AH
Nolte-Ernsting, CCA
Wildberger, JE
Heussen, N
Adam, G
Wirtz, DC
Piroth, W
Bücker, A
Biesterfeld, S
Haage, P
Günther, RW
机构
[1] Univ Technol, Dept Diagnost Radiol, D-52074 Aachen, Germany
[2] Univ Technol, Inst Med Biometry, Aachen, Germany
[3] Univ Hamburg Eppendorf, Dept Diagnost & Intervent Radiol, Hamburg, Germany
[4] Univ Technol, Dept Orthoped, D-52074 Aachen, Germany
[5] Univ Technol, Inst Pathol, D-52074 Aachen, Germany
关键词
aneurysmal bone cyst; bones; cyst; bone neoplasms; diagnosis; radiographs; MR imaging;
D O I
10.1007/s00330-002-1668-8
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Our objective was to investigate the accuracy and the diagnostic value of different imaging features of primary aneurysmal bone cysts (ABC) in conventional radiographs and MRI. Conventional radiographs and MR images of 34 patients with a suspected aneurysmal bone cyst were reevaluated by six independent radiologists in a blinded fashion. Morphological features, MR signal characteristics, and contrast enhancement patterns were assessed. Diagnoses were correlated with histology. Sensitivity and specificity of the different imaging findings for each imaging technique were calculated. In 24 patients ABC was histologically proven. In 10 cases diagnoses other than ABC were established. Conventional radiography and MRI each demonstrated a sensitivity of 76.4 and 77.8% with a specificity of 55.0 and 66.7%, respectively. With combined use of both imaging modalities sensitivity and specificity increased to 82.6 and 70%, respectively. The ABC was significantly more often seen as circumscribed lesion with bone expansion, lobulation, septa, and pathological cortical bone reaction than those cases with different diagnoses. Septal contrast enhancement proved to be a useful MR imaging finding in suspected ABC. The combined use of conventional radiographs and MRI revealed the highest sensitivity in the diagnosis of ABC in relation to histology. Magnetic resonance imaging provides improved diagnostic specificity and valuable information on soft tissue changes.
引用
收藏
页码:1118 / 1124
页数:7
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