Table 4.

Comparison of proportions of each radiographic finding between commonly reported malignancies.

Malignancy	Comparison	GGO	Nodules	Tree-in-bud	Septal thickening	Mediastinal/ hilar adenopathy	Infiltrates/ consolidations	Pleural effusion
Gastric	Breast	N/A	0.12 (−6.41–63.9)	N/A	0.02 (6.08–86.6)	N/A	0.79 (−42.5–46.5)	0.52 (−32.0–59.6)
Gastric	Lung	0.75 (−28.5–57.0)	0.09 (−3.73–83.9)	1.000 (−47.4–47.4)	0.25 (−12.0–71.7)	N/A	0.79 (−42.5–46.5)	N/A
Gastric	Non-gastric	0.10 (−4.49–45.6)	0.24 (−11.6–43.8)	N/A	0.05 (0.164–66.0)	N/A	0.28 (−16.3–52.0)	0.27 (−15.8–56.7)

This table illustrates statistical significance of CT findings between different types of malignancies in cases of PTTM. Septal thickening is a radiographic feature that is statistically more common in gastric cancer than in breast cancer or all non-gastric cancer cases. P values are listed with 95% CIs in parentheses.

Comparison of proportions online calculator was used for this statistical analysis (https://www.medcalc.org/calc/comparison_of_proportions.php)

N/A, comparison of proportions cannot be done in cases if proportion is either 0% or 100%.