原发性骶骨肿瘤病理及影像学表现

目的:分析原发性骶骨肿瘤的病理学分型及影像学表现特点。方法:48例原发性骶骨肿瘤均经手术病理证实,术前均行常规X线平片、CT和/或MR检查,结合病理回顾分析了其影像学表现。结果:原发性骶骨肿瘤以脊索瘤(21例)最多见,其次是巨细胞瘤(7例)、神经源性肿瘤(6例)、软骨肉瘤(4例)、滑膜肉瘤(3例),囊肿(3例),其它相对少见,包括纤维组织细胞癌1例,尤文氏肉瘤1例,梭形细胞癌1例,节细胞神经瘤1例。影像表现包括软组织肿块、骶孔扩大、瘤灶内钙化、骨嵴形成等不同特点。常见原发骶骨肿瘤常有其特征性影像学表现。结论:原发骶骨肿瘤病理分型相对复杂,影像表现多样化,诊断常需综合不同影像检查手段。

Primary sacral neoplasm: histopathology and imaging manifestations

Objective:To describe the image manifestations,pathology types of sacral neoplasm.Methods:The histopathology type of the 48 primary sacral neoplasm were all obtained by operation.Routine radiographic film,CT and/or MR were analyzed retrospectively in all cases.Results:Among all 48 primary sacral neoplasm cases,histopathology revealed the most were chordomas(21 cases),the second were giant cell tumors(7 cases),and neuromas(7 cases),chondrosarcoma(4cases),synoviosarcomas(3 cases),sacral cysts(3 cases) are relatively common in primary tumor.Image manifestations such as soft tissue mass,enlarge of sacral foramen,calcification and marrow involvement were observed in different sacral tumors.The image features of common sacral tumor were also revealed.Conclusion:To diagnose primary sacral neoplasm correctly need combine the different image instruments and analyze the image manifestations synthetically due to the complication histopathology of sacral tumors.