Gastric foregut cystic developmental malformation: Case series and literature review

Figure 1 Computed tomography. A: Frontal abdominal contrast-enhanced computed tomography (CT); B: Transversal abdominal CT demonstrating a homogeneous, low-density and well-circumscribed, subserosal cystic mass on the lesser curvature of the gastric cardia.

Figure 2 Gross appearance of the resected specimen of proximal gastrectomy. A cyst measured 6.5 cm × 5 cm was embedded in the gastric muscular layer, and did not communicate with the gastric lumen.

Figure 3 Submucosal cystic lesion. Hematoxylin and eosin staining showing the cyst wall lined by pseudostratified ciliated columnar epithelium (A) and submucosal cystic wall with irregular longitudinal muscle bundles (B), magnification × 200.

Figure 4 Regular, double-stratified, circular and longitudinal smooth muscles of the cyst and well-developed muscle layers continuous with gastric smooth muscle bundles, cartilaginous tissue, seromucous gland, or gastric epithelium were not identified. Hematoxylin and eosin staining (magnification × 200).

Figure 5 Squamous metaplasia tendency of the pseudostratified ciliated columnar epithelium. Hematoxylin and eosin staining (magnification × 200).