Transabdominal<unk>  has low sensitivity varying between 0-66% in detecting insulinoma. The sensitivity increases with the use of more invasive endoscopic<unk>  (93%) and intraoperative<unk>  (86%). Hypoechoic lesion and hypervascular mass are ultrasonographic findings.
Hypoglycemia echocardiography or ultrasound
Hypoglycemia other diagnostic studies
Hypoglycemia physical examination
Hypoglycemia electrocardiogram
Hypoglycemia MRI
Hyponatremia physical examination
Hyperkalemia physical examination
Addison's disease electrocardiogram