Table 2.

Lymph node stations ^a irradiated as the CTV ^b

	N0–1after surgery	N2after surgery
Right
Upper/Middle lobectomy	10,7 and 4R	10, 7, 4R [irradiate 2R if 4R (+)]
Lower lobectomy	10 and 7	10, 7 [irradiate 8/9 if 8/9 (+)]
Left
Upper lobectomy	10, 7, 4 L and 5	10, 7, 4 L and 5 [irradiate 2 L if 4 L (+)]
Lower lobectomy	10 and 7	10, 7 [irradiate 8/9 if 8/9 (+)]

^a: Followed the lymph node classification [11]; ^b: clinical target volume.