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

Figure 1 Cystic content and histology. A: A highly proteinaceous and mucoid content during submucosal tunnel endoscopic resection; B: Histopathologic examination showing the ciliated columnar epithelium lining and smooth muscle layers in the cyst wall (hematoxylin and eosin, 5 ×); C: Histopathologic examination showing the ciliated columnar epithelium lining, smooth muscle layers and cartilage (hematoxylin and eosin, 5 ×); D: A typical pathological image showing that the lesion was originated from muscularis propria.