BACKGROUND: Findings on @entity419 positron emission tomography/computed tomography (PET/CT) are surrogate markers of @entity2220 . Breathing during PET/CT can substantially reduce the maximum standardized uptake value (maxSUV) of @entity2 when they are located at the lower zone (LZ). OBJECTIVES: We assessed whether @entity2 location influences the @entity5 predicted by maxSUV. METHODS: 608 @entity1 with clinical stage IA @entity2220 had been preoperatively examined by PET/CT and high-resolution computed tomography (HRCT). We evaluated the clinicopathological characteristics of these @entity1 and the accuracy of precognition obtained by maxSUV between the upper zone (UZ, n = 395) and the LZ (n = 213). maxSUV was also analyzed for matched pairs between the two groups. RESULTS: The mean maxSUV in the LZ group was significantly lower than that in the UZ group (1.98    1.73 vs. 2.44    2.43, respectively; p = 0.0145). The receiver operating characteristics curve of maxSUV for predicting high-grade @entity5 (lymphatic, vascular, @entity3 , or lymph node @entity3 ) was larger for the UZ group than for the LZ group [0.89, 95% confidence interval (CI) 0.86-0.93, vs. 0.82, 95% CI 0.76-0.88]. Analysis for maxSUV of 213 pairs matched for the solid component size on HRCT, pathological characteristics, and gender revealed that maxSUV in the LZ group was significantly lower than that in the UZ group (1.98    1.73 vs. 2.47    2.39, respectively; p < 0.001). CONCLUSIONS: maxSUV of a @entity5 in the LZ group is apparently lower than the value which reflects the potential @entity5 of a @entity5 . We have to carefully consider these facts when selecting the appropriate surgical procedure for @entity2 with PET/CT and HRCT.

The Difference in Maximum Standardized Uptake Value among XXXX Located at the Upper and Lower Zone on PET/CT.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity419 :: ('MESH:D019788', 'Chemical') :: ['18F-fluorodeoxyglucose'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'malignancy'] @entity2 :: ('MESH:D008175', 'Disease') :: ['lung tumors', 'lung cancer'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastasis', 'pleural invasion'] @entity2220 :: ('MESH:C538231', 'Disease') :: ['malignancy in lung adenocarcinoma', 'lung adenocarcinoma']
@entity2220 :: (MESH:C538231,Disease) :: ['Lung Adenocarcinomas']
