Adrenal incidentaloma can be described as adrenal lesions that are incidentally diagnosed during abdominal surgery or any abdominal screening without any clinical findings. Roughly 30% of them are functional and a small group of 5-7% may exist as pheochromocytoma. Anaesthetic drugs can exacerbate the cardiovascular effects of catecholamines secreted by these tumours and peroperative management may become complicated. Despite the new developments of drugs and techniques, the management of patients with pheochromocytoma is still an anaesthesiologist’s nightmare. We describe a case of pheochromocytoma in a 58-year-old woman, found coincidentally during surgery. This case serves as an example, when presented with similar findings, to consider pheochromocytoma as one of the differential diagnoses.