Freeby J A, Reinus W R, Wilson A J
Mallinckrodt Institute of Radiology, Jewish Hospital, Musculoskeletal Section, St. Louis, Missouri 63110, USA.
Invest Radiol. 1995 Jul;30(7):433-9. doi: 10.1097/00004424-199507000-00007.
To quantitate radiographic features that distinguish the plain radiographic appearance of aneurysmal bone cyst (ABC) from other solitary lesions of bone.
Seven hundred nine cases of focal bone lesions, including 32 ABCs were analyzed according to demographic, anatomic, and plain radiographic features. Vector analysis of groups of features was performed to determine those that are most sensitive and specific for the appearance of ABC in contrast with other lesions in the data base.
Aneurysmal bone cysts most consistently are medullary-based, either eccentric or centric (94%), show lysis (100%), cortical thinning (97%), enlargement of the host bone (100%), and geographic bone destruction (94%). They have well-defined edges (84%), no fallen fragment (100%), no evidence of periosteal reaction (75%), and no visible matrix (91%). Although they typically occur in the metadiaphysis of long bones, the anatomic location and demographic data did not significantly affect the sensitivity or specificity for detection of ABCs. The vector analysis-generated differential diagnoses include giant cell tumor, unicameral bone cyst, nonossifying fibroma, enchondroma, and fibrous dysplasia as the major lesions.
定量分析可区分骨动脉瘤样骨囊肿（ABC）与其他孤立性骨病变X线平片表现的影像学特征。
根据人口统计学、解剖学和X线平片特征，分析了709例局灶性骨病变，其中包括32例ABC。对特征组进行向量分析，以确定与数据库中其他病变相比，对ABC表现最敏感和特异的特征。
骨动脉瘤样骨囊肿最常见于髓腔内，偏心或中心性（94%），表现为骨质溶解（100%）、皮质变薄（97%）、宿主骨增大（100%）及地图样骨质破坏（94%）。其边界清晰（84%），无骨片陷落（100%），无骨膜反应（75%），无可见基质（91%）。虽然它们通常发生于长骨的干骺端，但解剖位置和人口统计学数据对ABC的检出敏感性或特异性无显著影响。向量分析生成的鉴别诊断包括巨细胞瘤、单房性骨囊肿、非骨化性纤维瘤、内生软骨瘤和骨纤维异常增殖症等主要病变。
