Endoscopic imaging modalities for diagnosing invasion depth of superficial esophageal squamous cell carcinoma: a systematic review and meta-analysis

Table 1 Characteristics of included studies

Reference number	Year	Sample size	Modality	Image enhancement	Classification	EUS method	EUS frequencies, MHz	Confirmatory study
25	1997	74	Non-ME	Non	-	-	-	Esophagectomy/ER
26	2010	236	Non-ME	Non	-	-	-	Esophagectomy/ER
27	2015	49	Non-ME/ME	NBI	Arima and Inoue	-	-	Esophagectomy/ER
28	1998	30	ME	Non	Arima	-	-	Esophagectomy/ER
29	2002	79	ME	Non	Inoue	-	-	Esophagectomy/ER
30	2006	12	ME	Non	Inoue	-	-	ER
31	2010	510	ME	FICE	Arima	-	-	Esophagectomy/ER
32	2014	220	ME	NBI	JES	-	-	ER
33	2014	249	ME	NBI	JES	-	-	ER
34	2014	464	ME	NBI	JES	-	-	Esophagectomy/ER
35	1995	40	EUS	-	-	Radial and/or mini-probe	7.5,12,20	Esophagectomy/ER
36	2006	40	EUS	-	-	Mini-probe	20	Esophagectomy/ER
37	2006	132	EUS	-	-	Radial and/or mini-probe	7.5,10,20	Esophagectomy/ER
38	2011	145	EUS	-	-	Mini-probe	20,30	Esophagectomy/ER

Non-ME non-magnified endoscopy; ME magnified endoscopy; EUS endoscopic ultrasound; IE Image enhancement method; FICE FUJI Intelligent Color Enhancement system; NBI Narrow band imaging system; Arima Arima’s classification; Inoue Inoue’s classification; JES Japan esophageal society classification; ER endoscopic resection

ISSN: 1471-230X