Value of endoscopic ultrasound in distinguishing ectopic pancrease and stromal tumor in stomach / 中华超声影像学杂志

Objective To explore the value of endoscopic ultrasound (EUS) in differential diagnosis of ectopic pancreas and stromal tumor in stomach.Methods The clinical data and endoscopic ultrasound findings of 40 patients with ectopic pancrea and 141 patients with stromal tumor were retrospectively analyzed,including the location,size,growth pattern,layer of origin,internal echo pattern and so on.All patients were diagnosed pathologically.Results Ectopic pancreas were predominantly located in the antrum (92.5％) and stromal tumor were mainly located in the gastric body (45.4％),the antrum (23.4％) and the fundus (22.0％),there was a significant difference in lesion' s location between two diseases (P ＜0.001).There was no statistical difference in the ratio of longest/shortest diameter of the lesion size(P =0.057).But there was statistical difference in lesion size between ectopic pancrease and stromal tumor [(19.98 ± 12.80)mm vs (11.25 ± 3.61)mm].Mural growth pattern was most common in ectopic pancrease (82.5％) and mural growth pattern (37.6％),extraluminal growth pattern (24.8％) and intraluminal growth pattern (22.7％) in stromal tumor (P ＜0.001).The third layer (75.0％) was predominant in ectopic pancrease while the fourth (54.6％) and the second layers (34.0％) in stromal tumor (P ＜0.001).With regard to internal echo pattern,hypoechoic (32.5％),intermediate (27.5％) and heterogeneous (27.5％) was predominant in ectopic pancrease and homogeneous hypoechoic lesion (72.3％) in the stromal tumor (P ＜ 0.001).Conclusions There were statistical differences between ectopic pancrease and stromal tumor in the location,size,layer of origin,growth pattern and internal echo pattern under EUS.EUS plays an important role in identification of ectopic pancrease and stromal tumor.

Value of endoscopic ultrasound in the differential diagnosis of stromal tumour and lipoma in duodenal tract / 中华超声影像学杂志

Objective To evaluate the value of endoscopic ultrasound (EUS) in differentiatied diagnosis for stromal tumour and lipoma in duodenal tract.MethodsThe EUS images of 44 cases of stromal tumour(30 cases) and lipoma( 14 cases) which were confirmed by pathological results were analyzed retrospectively.The location,size,layer of origin,margin,internal echo pattern and homogeniety of the lesion were recorded and compared.Results Compared with lipoma,stromal tumour showed a significant difference in the layer of origin,margin,internal echo and homogeniety ( P ＜ 0.05 ),but there was no statistical difference in the lesion location and size( P ＞0.05).ConclusionsEUS is greatly helpful to the differential diagnosis of stromal tumour and lipoma in duodenal tract.