If an ovarian cyst has a diameter larger than 5 cm, medical protocol dictates that the ovarian cyst should be removed surgically.
It doesn’t seem likely that you are experiencing thrombosis of the abdominal aorta under the kidneys. Thrombosis is a serious and very dramatic condition. Such conditions are urgent and aren't usually discovered accidentally. You may, however, be experiencing atherosclerotic plagues on the artery walls. Atherosclerotic plagues are due to atherosclerosis. Atherosclerosis is a degenerative disease of the arteries due to accumulation of fats in the walls of the arteries. Plagues develop mostly in the coronary and brain arteries and in the arteries of the lower extremities. Plagues narrow the volume of blood that passes through the artery and can causes ischemia. Plagues are susceptible to developing arterial thromboses. Thrombosis stops blood circulation completely causing an infarct. Risk factors for developing atherosclerosis are: smoking, high blood pressure, diabetes and increased blood fats. Atherosclerotic plagues can be visualized with an angiography and doppler ultrasound scan. You may also check the risk factors by visiting your primary health doctor.