ABSTRACT
Objective To investigate the differential diagnostic value of 18 F‐DG PET/CT imaging on gastric malignancies and primary gastric lymphoma(PGL) .Methods A total of 93 cases of gastric cancer (23 cases of mucinous adenocarcinoma and 70 ca‐ses of non mucinous adenocarcinoma ) ,58 cases of PGL and 31 cases of Diffuse Large b Cell Lymphoma (DLBCL ) and 27 cases of Mucosa associated tissue lymphoma (MALT) treated in our hospital from Jun 2012 to Jun 2015 were involved in this study .Their clinical data ,SUVmax ,maximum lesions thickness ,CT value ,lesion shape ,merge splenomegaly and lymph node metastasis were compared .The relation between SUVmax and maximum lesions thickness were analyzed with Pearson analysis .Results The aver‐age age and the lesions involve cardiac orifice rate of the gastric cancer group were significantly higher than that of PGL group (P0 .05) .Conclusion The diagnostic value of 18 F‐FDG PET/CT in gastric malignancies was high ,and patients with different cancer and pathological type were different in SUVmax ,maximum le‐sions thickness and lesion shape .