Objective:To summarize the clinical and CT characteristics of abdominal Burkitt's lymphoma (BL) in children,analyze the causes of misdiagnosis,and improve the diagnostic accuracy of abdominal BL in children. Methods:A retrospec-tive analysis focused on 42 children with pre-therapy CT data and 71 with clinical data of abdominal BL. The clinical char-acteristics of 71 cases of abdominal BL in children were studied,as well as the CT characteristics of 42 cases and as well as the causes of misdiagnosis. Results:Of the 71 children with abdominal BL,60 were males and 11 were females,with an av-erage age of 6.8±0.1 years. Among them,24 cases were in the early stage(Ⅰ+Ⅱ,33.8％) and 47 cases were in the late stage (Ⅲ+Ⅳ,66.2％). Sixty-three cases(88.7％) showed overall remission,and 8 cases(12.3％) died. Before therapy,42 cases under-went plain and enhanced abdomen CT scans. A total of 31 cases(73.8％) had gastrointestinal tract involvement,while 20 cases (47.6％) had peripheral organ invasion. The accuracy rate of CT diagnosis before treatment was 81％. Children 's abdominal BL was divided into three types according to the cause of the CT misdiagnosis:gastrointestinal type,nodular type,and hybrid type. Fourteen cases of gastrointestinal type(33.3％) displayed diffuse thickening of the intestinal(gastric) wall. Fifteen cases of nodule type (35.7％) displayed soft tissue masses with no significant intestinal wall thickening. Thirteen cases of hybrid type (31.0％) displayed diffuse thickening of the intestinal wall and lymph node enlargement,and urinary system infiltration was more common than gastrointestinal and nodule type (P=0.024). Conclusion:Abdominal BL in children often involves the gas-trointestinal tract and is characterized by diffuse thickening of the intestinal (gastric) wall and soft tissue masses,which are prone to peripheral tissue infiltration. The gastrointestinal type is easily misdiagnosed as a stromal tumor,the nodular type is easily misdiagnosed as a malignant tumor,and the hybrid type has typical imaging manifestations,most of which can be ac-curately diagnosed.
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