A rare case of solid foreign body impaction within the pseudopylorus created during Mason's bariatric vertical banded gastroplasty is discussed in the report. The patient was referred to the authors' center with symptoms of high gastrointestinal obstruction, which had appeared 48 hours prior to admission. The situation was resolved by endoscopic removal of the impacting foreign body with the use of Dormia basket. Anastomoses and strictures resulting from bariatric procedures are a frequent location of food bolus obstructions and bezoars. It is therefore important to perform a diagnostic gastroscopy prior to performing a bariatric procedure in order to check for preexisting conditions, including malignant tumors.