Table 2.

Pitfalls for assessing the T stage

Pitfall	Effect	Solution
Thick slices for T-descriptor assessment (1.5–5 mm)	The solid component in a part-solid tumour could be missed → misclassification as pure ground-glass tumours	Thin slices (1 mm)
Axial reconstructions only	Potentially not capturing the single largest tumour dimension→ low T descriptor	MPR in axial, sagittal, and coronal reconstructions to assess single largest tumour dimension
Using non-lung window settings without sharp filter	Underestimation of tumour dimension → low T descriptor	Lung-window setting with a sharp filter
Assessing diaphragmatic infiltration on axial reconstructions	Diaphragmatic infiltration might be missed → low T descriptor	Sagittal and coronal reconstructions for assessment of diaphragmatic infiltration

MPR, multiplanar reconstruction.