What are topological forms of atherosclerosis?

1. On the aorta: the subdiaphragmatic abdominal segment is the most particularly affected at the level of the aortic junction. On the thoracic aorta, the ascending segment and the top of the arch are the most interesting. 2. On the cervico-cephalic arteries: the lesions affect the carotid and vertebral arteries, in their cervical and intracranial path. 3. At the level of the viscera: lesions develop on the first centimeters of the vessel (coronaries, renal arteries, mesenteric arteries, etc.) 4. At the level of the limbs: lesions mainly affect the limbs lower and may extend to the middle of the leg. Upper extremity involvement is rare. 5. At the level of the pulmonary arteries: atherosclerotic lesions only exist in the case of associated pulmonary arterial hypertension.