单发型内生软骨瘤影像学表现分析

目的探讨内生软骨瘤的临床与影像学特征。方法对资料完整并经手术病理证实的单发型内生软骨瘤11例的临床与X线平片、CT、MRI资料进行回顾性分析。结果11例中,掌骨3例,指骨4例,肱骨干1例,股骨干骺端2例,胫骨干骺端1例。掌指骨病灶X线平片表现为囊样、类圆形透光区,瘤内钙化,呈膨胀性生长,骨皮质变薄;四肢长骨病灶在CT表现瘤内软组织密度影,内见斑片状钙化;MRI在T1WI为低信号,T2WI为高信号为主的混杂信号,1例股骨病灶T2WI周围见低信号带。结论影像学检查对本病大多数可做出定性诊断与鉴别诊断。

Imaging Features of Solitary Enchondroma

Objective To discuss the clinic and imaging features of solitary enchondroma.Methods Radiography,CT and MRI were performed in 11 cases of solitary enchondroma confirmed by pathology.The imaging findings were retrospectively analysed.Results The tumors in 11 cases localized in metacarpal bone in 3, in bones of fingers in 4, in shaft of humerus in one,in metaphysis of femur in 2 and in metaphysis of tibia in one.Plain radiography showed typical radiographic features including a well defined central lucency in the diaphysis of the metacarpal bones and bones of fingers with calcifications inside the lesions and lobulated contour,the cortex was thinned and cortical expansion also might occur.The lesions appeared as soft tissue density with stippling calcification on CT,low signal intensity on T1WI and mixed mainly high signal intensity on T2WI.A low signal zone around the lesion could be seen on T2WI in one case.Conclusion The qualitative and differential diagnosis of solitary enchondroma can be made mostly by imaging examination.