Clinicopathological and endoscopic ultrasonography characteristics of esophageal bronchogenic cysts: A single-center study

Table 2 Endoscopic ultrasonography characteristics of the 22 esophageal bronchogenic cysts

EUS characteristics	n (%)
Average lesion size (cm)	3.12 ± 1.25
Origin
Muscularis propria	20 (90.9)
Submucosa	2 (9.1)
Growth pattern
Predominant extraluminal growth	18 (81.8)
Intraluminal growth	4 (18.2)
Margin
Smooth and clear	22 (100)
Indistinct	0 (0)
Blood flow signal	0 (0)
Echo
Hypoecho	17 (77.3)
Anecho	5 (22.7)
Punctiform hyperecho	10 (45.5)
Flocculent hypoecho	8 (36.4)
Posterior wall enhancement	10 (45.5)
EUS elastography	6
Yellow-green or green	6 (100)
Blue	0 (0)
CE-EUS
Enhancement	0 (0)
No enhancement	5 (100)

Smooth and clear the margin is clear, smooth and easy to identify through endoscopic ultrasonography. Indistinct the margin is unclear or blurry, difficult to distinguish from surrounding tissues. EUS: Endoscopic ultrasonography; CE-EUS: Contrast-enhanced endoscopic ultrasonography.