Follicular dendritic cell sarcoma of the abdomen:CT and MRI features of 5 cases

• 作 者: ShuhangXu RongZhang XuewenLiu QianqianZhao DailinRong
• 机 构: Sun Yat-sen University Cancer Center
• 出 处: 中华放射学学术大会2016、中华医学会第23次全国放射学学术大会暨中华医学会第24次全国影像技术学术大会
• 发表日期: 2016年5期
• 关键词: Follicular dendritic cell sarcoma Abdomen CT MRI

　　Objective: To summarize the CT and MRI features in a series of five cases of follicular dendritic cell sarcoma(FDCS)of the abdomen.Materials and Methods: The clinical data,CT and MRI images of 5 patients of abdominal FDCS were retrospectively reviewed.All images were consensually analyzed by two radiologists to determine the lesion location,number,size,morphology,margin,signal intensity or CT density,contrast enhancement pattern and involvement of adjacent structures.Results: There were 4 females and 1 male aged from 26 to 58 years.All patients had multiple lesions.The sites of tumor involvement were the retroperitoneum(n=3),the mesenterium(n=1),the duodenal bulb(n=1),the omentum(n=1),the hepatic hilar region(n=1)and the portacaval space(n=1).Two imaging patterns,including a localized pattern(n=4)and a multicentric pattern(n=1),were observed.Localized abdominal FDCS characterized as an intensively-enhanced,lobulated large mass with internal necrosis,calcification,dilated tumor supply arteries,and enlarged adjacent regional lymph nodes.Multicentric abdominal FDCS presented as well-defined,homogeneous,and moderate-enhanced small nodules at multiple sites.Conclusion: Localized abdominal FDCS has characteristic imaging features for pre-surgical diagnosis and differential diagnosis,while multicentric FDCS is very difficult to differentiate from lymphoma and metastatic lymph nodes.