摘要：
目的 探讨Askin瘤的MSCT特点及临床特征.方法 回顾性收集12例经手术或穿刺病理证实的Askin瘤临床及影像学资料,总结分析Askin瘤的MSCT及临床特征.结果 12例Askin瘤患者,7例病灶位于胸壁;7例以发现迅速增大的疼痛性肿块就诊(58.3%,7/12);9例行手术切除及术后放化疗,随访1年内6例复发或转移(66.7%,6/9).Askin瘤MSCT表现多为胸肺交界区的不规则软组织肿块,直径2.0~13.0 cm,密度不均匀,11例囊变(91.7%,11/12),1例钙化(8.3%,1/12),边缘不清(100%,12/12),增强扫描多呈中度以上不均匀明显强化(100%,12/12),其中侵犯胸膜并向外生长11例(91.7%,11/12),9例伴有胸水(75.0%,9/12),1例伴有纵隔淋巴结肿大(8.3%,1/12),4例伴有邻近肋骨或脊柱骨质破坏(33.3%,4/12).结论 Askin瘤多表现为胸肺交界区的不规则软组织肿块,短期迅速增大,肿块呈弥漫、浸润性生长,钙化及邻近淋巴结转移少见.%Objective To discuss the imaging manifestations and clinical characteristics of Askin tumor.Methods 12 cases of Askin tumor confirmed by surgically and histopathologically were included in this study.The MSCT signs and clinical data were summarized.Results In 12 cases of Askin tumor,7 cases located in the chest wall;7 case were hospitalised with rapid enlargementd painful lump(58.3%,7/12).9 cases were performed surgery and postoperative radio chemotherapy,6 patients experienced metastatic or recurrent tumors during the following year(66.7%,6/9).Askin tumor often occurred in the chest-lung junction region,had the diameters of 2.0-13.0 cm,11 cases showed inhomogeneous density (91.7%,11/12), 1 case showed calcification (8.3%,1/12), ill-defined margin(100%,12/12),12 cases showed intense but inhomogeneous enhancement following contrast administrationin (100%,12/12),11 cases had the feature of pleura invasion (91.7%,11/12), 9 cases with pleural effusion(75.0%,9/12), 1 case with swollen lymph nodes in mediastinum(8.3%,1/12), and 4 cases with lytic lesion of adjacent bone(33.3%,4/12).Conclusion Askin tumor often occurrs in the chest-lung junction region with rapid enlargementd painful lump as the primary symptom;the tumor show the infiltration diffuse growth;calcification and adjacent lymph node metastasis is not very common.
