Gastric bronchogenic cysts are extremely rare congenital cystic lesions that originate
from the ventral foregut during the 3rd to 7th weeks of embryonic development
[1 2 2
A 38-year-old woman was referred to us with a gastric submucosal tumor. Initial
esophagogastroduodenoscopy demonstrated a nearly pedunculated mass with normal
overlying mucosa in the cardia (Figure [1 2 3 1 , Figure [4 5 2 , Figure [6
Figure 1 Endoscopy revealed a large, rounded, nearly pedunculated mass, with normal overlying
mucosa, in the cardia.
Figure 2 Endoscopic ultrasound image showing a homogeneous, echo-poor mass lesion, 7 ×
5 cm in size, arising within the submucosal layer.
Figure 3 Abdominal computed tomography showed a solid mass (arrow) originating from the
gastric wall.
Figure 4 Serous yellow fluid gushed out after the upper portion of the lesion was resected
with a transparent cap and a snare.
Figure 5 Histological views showing the wall of the resected cyst to be composed of ciliated,
pseudostratified epithelium (hematoxylin & eosin, original magnification × 40
(a ) and × 200 (b )).
Figure 6 The remaining cyst was resected completely by piecemeal endoscopic mucosal resection.
Video
1 The mucosa covering the lesion was incised with a snare and the upper portion
of the lesion was resected with a transparent cap and a snare. Serous yellow fluid
gushed out from the lesion.
Video
2 Three days after the initial deroofing, the remaining cyst was resected piecemeal
by endoscopic mucosal resection, using a transparent cap after submucosal injection.
Endoscopy was performed 2 months later, and no obvious residual remnant of the
cyst was seen.
The EUS features of developmental cysts do not seem to be as uniform as might
be expected. Some reports have demonstrated that the finding of an echoic pattern
as opposed to a layered-wall pattern is not mandatory for the EUS diagnosis of
these cystic lesions [2 3 4 5
Endoscopy_UCTN_Code_CCL_1AB_2AD_3AB
