Endoscopic identification of endoluminal esophageal landmarks for radial and longitudinal orientation and lesion location

doi:10.3748/wjg.v25.i4.498

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World Journal of Gastroenterology

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1007-9327

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Gastroenterol. Jan 28, 2019; 25(4): 498-508
Published online Jan 28, 2019. doi: 10.3748/wjg.v25.i4.498

Table 2 Landmark distance from the incisors

Landmark	Study (n = 207)	Sub-study (n = 25)		P value	Power to detect differences > 4.5% (confidence 95%)
Landmark	WL, mean ± SD (CV)	WL, mean ± SD (CV)	EUS, mean ± SD (CV)	P value	Power to detect differences > 4.5% (confidence 95%)
Left main bronchus	25.8 ± 2.3 (0.09)	25.4 ± 2.1 (0.08)	26.7 ± 1.9 (0.07)	0.16	82.9%
Left atrium	31.4 ± 2.4 (0.08)	30.5 ± 1.9 (0.06)	31.6 ± 2.3 (0.07)	0.1	80.1%

One-way ANOVA test with P < 0.05 considered significant. Mean distances are expressed in cm. SD: Standard deviation; CV: Coefficient of variation.

Citation: Emura F, Gomez-Esquivel R, Rodriguez-Reyes C, Benias P, Preciado J, Wallace M, Giraldo-Cadavid L. Endoscopic identification of endoluminal esophageal landmarks for radial and longitudinal orientation and lesion location. World J Gastroenterol 2019; 25(4): 498-508
URL: https://www.wjgnet.com/1007-9327/full/v25/i4/498.htm
DOI: https://dx.doi.org/10.3748/wjg.v25.i4.498