Table 4. Surgical procedure/affected areas.

	Right		Left		Total
	n	%	n	%	n	%
Pneumonectomy	33	2.4	150	10.8	183	13.1
Lobectomy	299	21.4	403	28.9	702	50.3
Lower	111	7.9	355	25.5	466	33.4
Upper	47	3.4	48	3.4	95	6.8
Middle	141	10.1	-	-	141	10.1
Bilobectomy inferior	78	5.6	-		83	6.0
Bilobectomy superior	5	0.4
Lobectomy + segmentectomy	3	0.2	309	22.2	312	22.4
Lower lobectomy + lingulectomy	-		309	22.2
Middle lobectomy + lower lobe superior	1	0.1	-
Middle lobectomy + upper lobe anterior	2	0.1	-
Segmentectomy	40	2.9	74	5.3	114	8.2
Lingulectomy	-		60	4.3
Upper lobe	22	1.6	6	0.4
Lower lobe	18	1.3	8	0.6
Total	458	32.9	936	67.1	1394	100