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目的研究 Askin 瘤的影像表现,提高对该病的认识及鉴别诊断能力。方法回顾性分析经病理证实的8例 Askin 瘤的影像表现。8例均行 X 线检查,7例行 CT 检查,1例行 MR 检查,4例行核素骨扫描。结果 8例 Askin 瘤均表现为位于胸壁或胸腔的软组织肿物,其中左侧4例,右侧4例。6例大病灶密度不均匀,2例较小病灶内密度或信号均匀;CT 扫描4例可见囊变、坏死区。CT、MRI、核素骨扫描共显示肋骨破坏6例,其中 CT 显示4例,MRI 显示1例,核素骨扫描显示放射性核素浓集3例。胸腔积液6例。瘤肺交界面清楚1例,不清楚7例。8例病灶中均未见钙化。结论Askin 瘤影像学表现为胸腔或胸壁的软组织肿物,但不具有特异性,对发生于儿童及青少年的胸壁肿物,应注意鉴别诊断。
Objective To study the imaging findings of Askin’s tumor and to improve its understanding and differential diagnosis. Methods We retrospectively analyzed the imaging findings of 8 cases of Askin tumor confirmed by pathology. Eight patients underwent X-ray examination, 7 patients underwent CT examination, 1 patient underwent MR examination and 4 patients underwent nuclear bone scan. Results Eight cases of Askin’s tumors showed soft tissue tumor located in the chest wall or chest, including 4 cases on the left and 4 cases on the right. In 6 cases, the density of large lesions was not uniform, and the density or signal in 2 small lesions was even. CT scan showed cystic degeneration and necrosis in 4 cases. CT, MRI and radionuclide bone scans showed 6 cases of rib destruction, including 4 cases of CT, 1 case of MRI and 3 cases of radionuclide concentration. Pleural effusion in 6 cases. Tumor-lung interface clear in 1 case, it is not clear in 7 cases. No lesions were found in 8 cases of calcification. Conclusions Askin’s tumor is a soft tissue tumor of thoracic cavity or chest wall, but it is not specific. The diagnosis of chest wall tumor in children and adolescents should pay attention to the differential diagnosis.