Recommendation for the definition of postoperative radiotherapy target volume based on a pooled analysis of patterns of failure after radical surgery among patients with thoracic esophageal squamous cell carcinoma

Table 2 Recurrence pattern summary using recurrence ratio

Study No.	LN Rec	Cervical supraclavicular LN	Upper Med LN	middle Med LN	lower Med LN	Abdominal paraaortic	Upper abdominal
1	126	55/126	93/126	50/126	2/126	*	*
2	18	3/18	3/18	*	*	*	*
3	160	61/160	*	*	*	*	*
4	121	34/121	30/121	9.5/121	9.5/121	30/121	8/121
5	79	35/79	18/79	21/79	2/79	*	*
8	15	10/15	6/15	3/15	0/15	4/15	5/15
9	51	8/51	*	*	*	*	*
10	34	10/34	*	*	*	*	*
11	74	50/74	*	*	*	*	*
12	29	3/29	*	*	*	*	*
13	106	37/106	56/106	14/106	0/106	*	*
ratio		317/841	206/465	97.5/447	11.5/447	34/136	13/136
%		37.69	44.30	21.81	2.57	25.0	9.56

ISSN: 1748-717X