CT differentiation of poorly-differentiated XXXX from well-differentiated @entity5 and @entity356 .

@entity5 @entity1 @entity420 @entity356
PURPOSE: To evaluate the differential CT features of gastric @entity5 ( @entity5 ) from well-differentiated NETs (WD-NETs) and @entity356 ( @entity420 ) and to suggest differential features of hepatic metastases from gastric NETs and @entity420 . MATERIALS AND METHODS: Our study population was comprised of 36 @entity1 with gastric NETs (18 WD-NETs, 18 @entity5 ) and 38 @entity1 with gastric @entity420 who served as our control group. Multiple CT features were assessed to identify significant differential CT findings of @entity5 from WD-NETs and @entity420 . In addition, CT features of hepatic metastases including the metastasis-to-liver ratio were analyzed to differentiate metastatic NETs from @entity420 . RESULTS: The presence of metastatic lymph nodes was the sole differentiator of @entity5 from WD-NETs (P   =   .001, odds ratio   =   56.67), while the presence of intact overlying mucosa with mucosal tenting was the sole significant CT feature differentiating @entity5 from @entity420 (P   =   .047, odds ratio   =   15.3) For hepatic metastases, metastases from NETs were more hyper-attenuated than those from @entity420 . CONCLUSION: The presence of metastatic LNs and intact overlying mucosa with mucosal tenting are useful CT discriminators of @entity5 from WD-NETs and @entity420 , respectively. In addition, a higher metastasis-to-liver ratio may help differentiate hepatic metastases of gastric NETs from those of gastric @entity420 with high accuracy. KEY POINTS:     Presence of metastatic LNs is a useful differentiator of @entity5 from WD-NETs.     Intact overlying mucosa with mucosal tenting suggests @entity5 more than gastric @entity420 .     Metastatic LNs are larger in size and greater in necrotic volume in @entity5 .     Hepatic metastases from gastric NETs are more hyper-attenuated than those from @entity420 .
