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 3 Recurrence pattern of upper/middle/lower squamous esophageal carcinoma using recurrence ratio

Study No.	Total Recurrence Size	Cervical supraclavicular LN	Upper Med LN	Middle Med LN	lower Med LN	Abdominal paraaortic	Upperabdominal
1	16	9/16	*	*	*	*	*
4	43	9/43	6/43	2/43	2/43	1/43	0/43
U(%)^		0.3051	0.1395	0.0465	0.0465	0.0233	0
1	92	40/92	*	*	*	*	*
4	141	20/141	19/141	4.5/141	4.5/141	7/141	4/141
14	338	96/338	*	88/338	*	*	*
M(%)^		0.2575	0.1348	0.0319	0.0319	0.0496	0.0284
1	18	6/18	*	*	*	*	*
4	109	5/109	5/109	3/109	3/109	22/109	4/109
13	108	37/108	56/108	14/108	0/108	*	*
L (%)^		0.2043	0.2811	0.0783	0.0138	0.2018	0.0367

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