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Brunner's gland hyperplasia is a rare, benign lesion of the duodenum. The symptomology can range from asymptomatic (as an incidental finding on endoscopy) to gastrointestinal obstruction or haemorrhage. We report a case of a 60-year-old man presenting with post-prandial vomiting and weight loss. Inpatient evaluation led to the likely diagnosis of a duodenal malignancy for which the patient underwent a laparotomy and proximal duodenectomy. Brunner's gland hyperplasia is a rare, benign condition that can be overtreated due to the diffic