- 期刊
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Radiological Findings of Aneurysmal Bone Cyst
動脈瘤骨囊腫之放射線表徵
摘要
在1982年到1992年間，本院收集了12個經病理證實為動脈瘤骨囊腫(Aneurymsal bone cyst, ABC)之病例。病人年齡從10歲46歲（平均為18.2歲）。病灶發部位以股骨最多，佔5例；其餘為脛骨、腓骨各佔2例，肱骨、腸骨及薦骨各佔1例。X光素片的表徵主要為界限清楚、擴張性、偏心性、有小梁(trabeculation)和骨膜加強(periosteal buttressing)之骨質溶解。電腦斷層掃描更可顯示出皮質邊緣(cortical rims)和液體平面(fluid levels)。血管攝影相顯示為豐富血管和染跡之病變。我們相信熟識ABC之各種放射線表微，對其診斷十分重要。
並列摘要
Aneurysmal bone cyst (ABC) is a non-neoplastic osseous lesion which is composed of cystic cavities filled with blood. Twelve pathologically proven cases of primary ABC were collected in our hospital from 1982 to 1992. The patients ranged in age from 10 to 46 years (average 18.2 years). Of these 12 cases, 5 occurred in the femur, 2 each in the tibia and fibula, and 1 each in the humerus, pelvis and sacrum. Plain radiographic findings included well-defined osteolysis in all patients, trabeculation in 7, eccentricity in 8, expansion in 8 and periosteal buttressing in 5. Nine of the 10 cases in the long bones primarily affected the metaphysis and 5 of them crossed the epiphyseal plate. Five cases were examined with CT, which further showed fluid levels in 2 cases and cortical rims in 3. In the only case in which angiography was performed, hypervascularity and prominent stains were revealed. In conclusion, plain radiography plays an important role in the diagnosis of ABC, while CT and angiography can add weight to the diagnosis.