Table 7. Comparison of CT findings with previously literatures.

CT findings	Reference (y, n)
	Tomiyama (7) (N=50)	Priola (8) (N=58)	Marom (6) (N=99)	Qu (9) (N=129)	Present study (N=138)
Size	S	S	S	S	S
Shape and (or) counter	S	S	S	S	S
Capsule	S	S	NM	S	NM
Internal density	S	S	S	S	NS
Enhancement pattern	S	S	NM	NM	S
Calcification	S	S	S	NM	NS
Mediastinal fat obliteration	NS	NS	NS	NM	NM
Infiltration of surrounding fat	NM	NM	S	NM	S
Invasion of great vessels	NS	NS	S	NM	S
Invasion of other mediastinal structures	NS	NM	S	S	S
Pleura effusion	NM	NS	NS	NM	S
Mediastinal lymph node enlargement	NM	NS	NM	NS	NS
Pleura and/or pulmonary nodule	NM	NM	S	NM	S

S, P<0.05 for staging; NM, not measured; NS, not significant.