骨良性纤维组织细胞瘤临床及影像学分析

目的提高对骨良性纤维组织细胞瘤临床及影像学表现的认识。方法回顾分析14例经手术病理证实的骨良性纤维组织细胞瘤,所有病例均行X线检查,9例行CT检查,5例行MR I检查。结果男?女1?1,平均年龄29.6岁。临床以局部疼痛为主,2例可触到软组织肿物。14例共22处病灶。发病部位以四肢长骨居多,共17处病灶。9处病灶位于松质骨,8处位于骨干皮质。单发病变12例,多发病变2例。X线表现为偏心或中央型溶骨性破坏,单房或多房状,边界清楚,周围可有硬化边缘,部分病灶膨胀,皮质断裂,极少数病灶周围可见软组织肿物。少数破坏区内可有点片状钙化。CT对病灶内的钙化、囊性变、皮质断裂及周围软组织肿物显示比X线平片清楚。在MR I上一般表现为均匀的等T1W I长T2W I信号,有时信号不均匀,其内夹杂斑点状低信号影及无信号影。少数病灶在T1W I、T2W I上呈混杂信号。结论综合各种影像表现并结合临床特点,多数典型病例可明确诊断此病。

Clinical and Imaging Analysis of Benign Fibrous Histiocytoma of Bone

Objective To improve the clinical and imaging diagnosis of benign fibrous histiocytoma of bone.Methods Imaging findingsin 14 patients with pathologically confirmed benign fibrous histiocytoma of bone were analyzed.X-ray plain film was performed in allpatients,CT scan and MR scan were done in 9 cases and in 5 cases respectively.Results The clinical symptom was mainly pain in the local lesion,soft tissue mass could be felt around the lesion in 2 cases.The single-lesion was 12 cases and multi-lesion was 2 cases.There were 22 lesions in 14 cases.Most lesions localized in long bones,totally were 17 lesions.9 lesions localized in cancellous bone,8 lesions localizedin diaphysis compact substance.X-ray plain film showed centric or eccentric osteolytic destruction,unilocular or multiocular with clearborder or sclerotic border,expansion,pathologic fracture and speckled calcification in some destruction lesions.Soft tissue mass could be seen around the lesion in few cases.CT was better than X-ray plain film in displaying calcification,cyst change,pathologic fracture and soft tissue masses in the destruction portion.MR presented as homogeneous signal on T_1WI and hyper-signal on T_2WI,sometimes was inhomogeneous,speckle-like low-signal and non-signal could be seen in the lesion on T_1WI and T_2WI.Few lesion shows intermixed signal on T_1WI and T_2WI.Conclusion Based on the typical imaging and clinical features,the correct diagnosis of benign fibrous histiocytoma can be made in most cases.