<p>Brunneromas are among the rarest benign tumours of the upper gastrointestinal tract, arising from Brunner’s glands. With timely intervention, patients generally experience a favourable prognosis. Clinical manifestations are uncommon, and diagnosis is particularly difficult for smaller lesions. Presentations can range from asymptomatic to severe obstructive symptoms and gastrointestinal bleeding. In cases with high clinical suspicion, establishing an accurate diagnosis is essential. We present a 79-year-old female diagnosed with a duodenal Brunneroma. The patient presented to the emergency department with persistent nausea, vomiting, weight loss, melena, and severe anaemia over the preceding two months. Computed tomography demonstrated a tumour causing concentric stenosis at the duodenal knee. The patient underwent laparotomy and gastrojejunal anastomosis without complications. A preoperative biopsy confirmed the diagnosis of Brunneroma. Due to their rarity and benign nature, Brunneromas are often not considered in the differential diagnosis and may be omitted from surveillance protocols, leading to delayed or inappropriate management. Further discussion is warranted regarding optimal diagnostic strategies, differential diagnosis, treatment, and management of these tumours.</p>