Gastric outlet obstruction due to pyloric mass in a 12-year-old girl

A 12-year-old girl was referred with epigastric pain, postprandial vomiting, weight loss and a prior brief admission with haematemesis for which a proton pump inhibitor (PPI) was commenced. Upper gastrointestinal (UGI) endoscopy at a private hospital confirmed a pre-pyloric mass obstructing endoscope passage. A contrast CT scan showed a distended fluid-filled stomach, thickened pylorus and a 1.2 cm polypoid lesion (figure 1). Repeat UGI endoscopy revealed …