Submucosal tunneling endoscopic resection: An effective and safe therapy for upper gastrointestinal submucosal tumors originating from the muscularis propria layer

Table 3 Safety outcomes of submucosal tunneling endoscopic resection for gastrointestinal submucosal tumors

Complication	Number of patients
Gas-related complications	6
Moderate fever	7
Mucosal injury	10
Chest or abdominal pain	4
Gas-related complications and mucosal injury	1
Gas-related complications and moderate fever	3
Moderate fever and chest pain	1
Moderate fever and pleural effusion	1
Moderate fever and mucosal injury	1
Big perforation of the MP layer	1
Total	35