<qa>  What is the primary aldosteronism?In this study the investigators aim to identify and include all patients with Primary Aldosteronism PA diagnosed in the Western and Mid-parts of Norway, to describe the characteristics of these patients, to explore the cardiac effects of PA, and to identify the long-term patient outcome after treatment. A subgroup of the included PA-patients perform Cardiac MRI to assess myocardial function in rest and during stress, myocardial mass and myocardial fibrosis, compared to a group of healthy controls. 