What is a vascular tumor of the adrenal gland causing hypertension and heart palpitations?

A vascular tumor of the adrenal gland that can cause hypertension and heart palpitations is called a pheochromocytoma. This tumor arises from the adrenal medulla and secretes excess catecholamines, such as adrenaline and norepinephrine, leading to symptoms like elevated blood pressure and increased heart rate. Diagnosis typically involves imaging studies and biochemical tests to measure catecholamine levels. Treatment usually involves surgical removal of the tumor to alleviate symptoms and prevent complications.