these are rare (0.1% of the population in autopsy studies), usually present in hypovolaemic shock with abdominal pain, but may also have haematuria or urinary obstruction
rupture occurs in 3-5% with these aneurysms and has a 10% mortality, thus rupture prevalence and mortality rates are much lower than with splenic artery aneurysms
mainly in those over 60yrs, 90% have hypertension
most younger patients are women and two-thirds have fibromuscular dysplasia 1)
indications for intervention for non-ruptured renal artery aneurysm:
size > 2cm
symptoms
refractory hypertension with significant renal artery stenosis or thromboembolism
women in childbearing age
usual specialty referral
younger patients under 60yrs with presumed fibromuscular dysplasia ⇒ nephrology
PH trauma induced aneurysm or calcified atherosclerotic lesions ⇒ urology