RESUMEN
Incidentalomas are asymptomatic adrenal tumors that are discovered on investigations performed for other reasons. Classically, these tumors are found on computed tomography of the abdomen. This article describes an incidentaloma that was discovered on upper gastrointestinal endoscopy performed before a bariatric operation and caused an extrinsic compression of the first and second parts of the duodenum. Further investigations showed a 15-cm non-functional adrenal tumor. The patient was treated successfully with laparoscopic adrenalectomy. The histological examination showed a benign adrenocortical adenoma with myelolipomatous changes. The article highlights the fact that incidentalomas may not only be discovered on imaging modalities but may also show up in other diagnostic methods such as endoscopy.