Two rare gastric hamartomatous inverted polyp cases suggest the pathogenesis of growth

Figure 1 Esophagogastroduodenoscopy showed a submucosal tumor. A: The esophagogastroduodenoscopy (EGD) showed a gastric submucosal tumor (SMT) measuring 30 mm in diameter in the greater curvature of upper body with bridging folds and a tiny reddish spot on top (yellow arrow); B: Using NBI-ME, the tiny area was observed to be dilated with banded marginal crypt epithelium (yellow arrows); C: Milky white mucous and calcification structures (blue arrow) were exuding from the biopsy site (yellow arrow); D: The solid portion inside the wall of the SMT with small cystic changes were exposed using forceps (yellow arrow).