Comprehensive treatment of gastric cancer is mainly based on the pathological staging. The T stage mainly depends on the accurate determination of the depth of the tumor invasion. The accurate T stage should be standardized pathological examination and continuous sectioning. N stage may be influenced by the number of lymph node examined. Insufficient lymph node examined may lead to stage migration. Therefore, standardizing lymph node dissection and lymph node harvest after surgery is important. M stage is mainly to improve the detection rate of peritoneal lavage cytology (CY), identify high risk factors for peritoneal metastasis, and optimize the prediction of peritoneal metastasis molecular markers, as a complementary methods of clinical examination. Currently, the quality of standardized pathological diagnosis of gastric cancer in China still needs to be improved. This article mainly elucidates the related studies and clinical experience of our center on how to do better in the optimization of gastric cancer TNM staging and pathological quality control.

Objective To understand the comparability of the detection results of four items (ALT ,AST , GGT ,ALP) of liver enzymology in 11 clinical laboratories in Xinjiang Production and Construction Corps (XPCC) and offer reference for improving mutual recognition of the results .Methods Eleven clinical labora-tories of XPCC organized the result comparability tests of 4 items of liver enzymology twice in 2017 ,and the samples with 5 batches were completed in each comparability test .One set of detection system in each labora-tory was used as comparability system according to comparability scheme .The detection results were analyzed through Robust Z Score and the evaluation criterion was :|Z|≤2 "satisfied";2< |Z|<3"warning";|Z|≥3 "not satisfied".Results The detection results of all 10 batch samples in 4 clinical laboratories showed |Z|≤2 in 2 comparability tests .In the first comparability test ,the detection results of 5 batch samples for 4 items were |Z|≤2 in 5 laboratories .In the second comparability test ,the detection results of 5 batch samples for 4 i-tems were |Z|≤2 in 8 laboratories ,but the ALT results of 5 batch samples in 1 laboratory showed positive deviation(Z≥3)and the GGT results of 5 batch samples in the other laboratory showed negative deviation (Z≤ -3) .Conclusion The 11 clinical laboratories in XPCC should continuously improve quality management system and make sure that the mutual recognition of the detection results of 4 items of liver enzymology is effective .