脾脏淋巴管瘤的CT表现

CT findings of splenic lymphangioma

目的:探讨脾脏淋巴管瘤(splenic lymphangioma,SLA)的临床及CT表现特点。方法:回顾性分析经手术病理证实的11例SLA患者资料,其中9例行上腹部CT平扫及增强扫描,2例直接行上腹部CT增强扫描。观察临床特征及CT表现,并总结其影像学特点。结果:6例患者表现为脾大,其中2例有贫血、牙龈出血等脾功能亢进症状;2例表现为脾内多发病灶,9例表现为脾内单发病灶;11例均未见钙化及包膜。CT平扫均表现为脾内囊性低密度影,其中6例为单囊性病变,5例为多囊性病变;增强扫描动脉期及门静脉期病灶囊壁及分隔轻中度强化,延迟期3例病灶呈轻度强化,其中1例病灶延迟期囊内容物出现强化。结论:SLA在CT平扫上表现为囊性密度影,增强扫描有不同程度强化,并具有延迟强化的特点。

Objective: To investigate the features of clinical manifestations and CT findings of splenic lymphangiomas(SLA). Methods: A total of 11 cases of SLA confirmed by surgery and pathology were analyzed retrospectively, 9 with epigastric CT scans and enhanced scans and 2 with epigastric CT enhanced scan directly. The clinical features and CT findings were observed and summarized. Results: There were 6 cases with splenomegaly and 2 of them were complicated with bleeding gums and anemia; 2 with multiple lesions inside spleen and 9 with solitary lesion. All the patients had no calcification and envelope. All lesions were shown as cystic low-density areas inside spleens on CT scans, among which 6 with single cystic lesion and 5 with multiple cystic lesions. The cystic wall and septum of lesions were mildly to moderately enhanced during the arterial and portal venous phases. Three lesions were mildly enhanced during the delay phase, and 1 of them showed enhancement of cystic contents. Conclusion: SLA is shown as cystic density shadow on CT scan. Enhanced scanning can display different degrees of enhancement and the character of delayed enhancement.