摘要:
目的：探讨软骨黏液样纤维瘤（CMF）的影像学特征。资料与方法：回顾分析18例经手术病理证实的软骨黏液样纤维瘤的影像资料，女性12例，男性6例，平均年龄30岁，范围9岁～78岁。分析其平片（15例），CT（8例）及MRI（10例）表现特征。结果：发生于股骨3例，胫骨3例，肱骨2例，掌骨2例，颞骨2例，额骨2例，尺骨1例，腓骨1例，跟骨1例和胸椎1例；10例位于长骨，其中干骺端7例，骨端2例，骨干1例；11例呈类圆形或椭圆形，4例呈分叶多房状，3例呈不规则形，均呈不同程度膨胀。CMF在平片及CT上病灶均为溶骨破坏，平片显示4例（26.67%）钙化，CT显示6例（75%）钙化；在MRI的T1WI表现为低至中等信号，T2WI表现为不均匀中高信号，其中80%（8/10）为外周中高信号，中央区高信号，增强后呈不规则环形强化，20%（2/10）呈弥漫性不均匀中高信号，增强后呈弥漫不均匀强化。结论：CMF影像表现具有一定的特征，其MRI信号及强化特点在CMF诊断及鉴别诊断中有重要作用。
Abstract:
Objective:To investigate the MRI, conventional radiography (CR) and CT characteristics of chondromyxoid fibroma (CMF). Methods:The study included 18 patients (12 females, 6 males; mean age 30 years; range 9 to 78 years). Diagnosis was made histopathologically in all patients. The CR (15), CT (8) and MRI (10) characteristics were summarized. Results:The lesions were located in femur (3), tibia (3), humerus (2), metacarpus (2), temporal bone (2), frontal bone (2), ulna (1), fibula (1), calcaneus (1), thoracic vertebra (1). Ten lesions were located in long bones, most of the lesions (10/18) were in the metaphysis, 2 lesions were in the epiphyseal, 1 lesion in the diaphyseal. 11 cases were round or oval, 4 cases were lobulated and multilocular, 3 cases were irregular, all of them showed different degrees expansion. All of the cases were demonstrated lytic lesions in CR and CT, 4 Cases(26.67%) were found calcification in CR, 6 cases(75%) were found calcification in CT. All cases showed hypointense to intermediate signal intensity on T1WI images. On T2WI images, all lesions were hyperintense:peripheral intermediate signal band with central hyperintense signal in 8 (80%) lesions, whereas diffusely hyperintense with heterogeneous pattern in two (20%). On contrast-enhanced T1WI images, peripheral nodular or arc enhancement was observed in 80% (8/10) and diffuse contrast enhancement was observed in 20% (2/10). Conclusion:CMF is a relatively rare primary bone tumor of cartilage, it has some imaging characteristics, its MRI signal and enhancement characteristics play an important role in the diagnosis and differential diagnosis. Imaging features can provide reference value for preoperative diagnosis of CMF.
百度学术
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