Fig 1.
Measurement of pathological and radiological tumor sizes (RTS).
(A) Pathological tumor size (PTS) was measured in fresh specimens after cross-sectioning. (B) First, RTS was measured on the axial plane (RTSax). (C) Multiplanar reformatted images were then reconstructed to define the greatest diameter of the lesion in three dimensions and the largest diameter of the lesion (RTSre) was measured.
Table 1.
Baseline characteristics of lung adenocarcinoma (n = 135).
Table 2.
Mean pathological and radiological tumor sizes divided into 1-cm intervals by pathological tumor size.
Fig 2.
Scatter plots of pathological tumor size (PTS) vs. radiologic tumor size (RTS).
(A) The relationship between PTS and RTS measured on axial images (r2 = 0.719, p<0.001). (B) The relationship between PTS and RTS measured on reconstructed multiplanar images (r2 = 0.833, p<0.001).
Fig 3.
Bland-Altman plots reflecting the differences between pathological tumor size (PTS) and radiological tumor size (RTS), which was measured in the axial image (A) and the multiplanar reformatted image (B). The solid horizontal line indicates the mean difference between PTS and RTS; the horizontal dashed lines indicate the 95% limit of agreement.
Table 3.
Results of the independent t-test performed to investigate factors affecting differences between pathological and radiological tumor size.
Table 4.
Multiple linear regression analysis performed to investigate independent factors affecting differences between pathological and radiological tumor size.
Fig 4.
Changes in T stage after operation.
T staging before operation was performed using radiological tumor size, which was measured on axial images and the multiplanar reformatted CT images and then compared with pathological tumor size.
Table 5.
Discrepancy between radiological and pathological tumor stage in 73 invasive adenocarcinomas.