Renal artery stenosis is often caused by atherosclerosis, fibromuscular dysplasia, and can also be caused by aortitis.
1. Atherosclerosis: Renal artery stenosis occurs when atherosclerosis involves the renal arteries. The lesion starts from the endothelium of the arteries, and a variety of risk factors damage the endothelium of the arteries, leading to lipid deposition in the arterial wall and chronic inflammation, forming atherosclerotic plaques.
2. Fibromuscular dysplasia: non-arteriosclerotic, non-inflammatory arterial lesions, the lesions are mostly located in the middle and distal segments of the main renal artery, and a few of them may involve the branches of the renal artery, and the occurrence of vascular occlusion is rare.
3. Aortitis: the affected vessels produce stenosis or occlusion, a few can cause expansion or aneurysm formation, the lesion mainly involves the anterior part of the renal artery trunk.
Patients with renal artery stenosis should go to the hospital in time, under the guidance of professional physicians to clarify the cause and timely treatment.