Delineation of clinical target volume for postoperative radiotherapy in stage IIIA-pN2 non-small-cell lung cancer

Figures & data

Table 1 Subsets of stage IIIA-N2

Subset	Description
IIIA1	Incidental nodal metastases found on final pathology examination of the resection specimen
IIIA2	Nodal (single-station) metastases recognized intraoperatively
IIIA3	Nodal metastases (single or multiple station) recognized by prethoracotomy staging (mediastinoscopy, other nodal biopsy, or PET scan)
IIIA4	Bulky or fixed multistation N2 disease

Abbreviations: PET, positron emission tomography; N2, ipsilateral mediastinal or subcarinal lymph node involvement.

Table 2 The rate of local recurrence (%)

Study	Primary site	Ipsilateral hilum	Location of lymph nodes
			2L	2R	3	4L	4R	5	6	7	8
Kelsey et al^Citation20	RL	6.9	1.3	12.5	5.5	4.2	23.6	4.2	5.5	13.9	1.3
	LL	16.1	1.8	3.6	7.1	3.6	14.3	16.1	1.8	14.3	0
Qin et al^Citation21	RL	8.9	0.6	15.6	3.9	3.3	26.1	1.1	0	17.2	2.8
	LL	11.6	1.9	2.9	9.7	4.8	16.5	7.8	3.9	19.4	1
Feng et al^Citation25	RL	19	NA	26	NA	NA	19	NA	NA	15	NA
	LL	12	NA	NA	NA	14	22	12	12	20	NA

Note: The rate in Table 2 is the number of each metastasis lymph node divided by the total number of recurrences in the left/right lung.

Abbreviations: RL, right lung; LL, left lung; NA, not available; 2L, left upper paratracheal stations; 2R, right upper paratracheal stations; 3, prevascular and prevertebral stations; 4L, left lower paratracheal stations; 4R, right lower paratracheal stations; 5, subaortic stations; 6, para-aortic stations; 7, subcarinal stations; 8, paraesophageal stations.

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