Possible complications associated with the gastrointestinal endoscopic puncture of cysts or pseudo-cysts include pain, abscess, hemorrhage/bleeding, pancreatitis, perforation, small risk of infection, abdominal pain, coagulation disorders and contraindications related to the use of electrical scalpel, allergic reaction to medication, allergic reaction to nickel, hypotension, respiratory depression or arrest, cardiac arrhythmia or arrest.