Table 5.

Sensitivity and specificity of radiographic findings for gastric cancer versus non-gastric cancers causing PTTM.

	GGO	Nodules	Tree-in-bud	Septal thickening	Mediastinal/ hilar adenopathy	Infiltrates/ consolidations	Pleural effusion
Sensitivity	75% (10/15)	93% (14/15)	50% (6/12)	92% (12/13)	100% (16/16)	58% (7/12)	56% (5/9)
Specificity	5% (1/19)	23% (3/13)	29% (2/7)	38% (3/8)	40% (2/5)	20% (2/10)	20% (2/10)

This table shows the sensitivity and specificity of each radiographic finding for identification of gastric cancer as the primary malignancy causing PTTM.

GGO, ground-glass opacities.