Renal artery aneurysm mimicking a solid parenchymal lesion

Abstract

A 40-year-old woman was referred to our department for further investigation of a renal mass identified at an ultrasound (US) examination carried out in a private clinic because of abdominal pain. The mass was oval and hypoechoic, measured about 20 mm in diameter and was located near the left renal sinus; color Doppler showed peripheral blood flow. US examination carried out in our department using different equipment confirmed the presence of the mass but revealed intralesional blood flow suggesting aneurysm. This diagnosis was confirmed at subsequent computed tomography (CT) scanning and magnetic resonance imaging (MRI). The patient refused to undergo surgery and she is currently being monitored and has suffered no sequelae.Keywords Aneurysm Á Color Doppler Á Renal mass Á Ultrasound Riassunto Una donna di 40 anni giungeva alla nostra osservazione per la rivalutazione di una formazione renale identificata ad un esame ecografico effettuato esternamente per dolore addominale. Tale formazione, ovalare ipoecogena di circa 20 mm, era localizzata a livello del seno renale di sinistra e mostrava al color Doppler segnale vascolare perifericamente. Il controllo ecografico da noi eseguito con apparecchiatura più performante confermava la presenza della formazione evidenziando tuttavia segnale vascolare al suo interno e ponendo il sospetto di aneurisma, confermato poi ai successivi esami TC ed RM. La paziente rifiutava di sottoporsi ad intervento chirurgico terapeutico ed è tuttora in follow-up senza sequele.

Giant Renal Artery Aneurysm With Hydronephrosis and Severe Atrophy of the Renal Parenchyma: Case Report and Literature Review

“…Only several cases have been reported in the literature. 13,14 There are cases of thrombosed RAAs reported in the literature, [15][16][17][18][19] but we couldn't find any estimates of the prevalence/incidence of RAA thrombosis; however, distal parenchymal embolization presumably originating in the RAA was noticed in 8% to 11% of RAA patients. 20 Parietal calcifications are present in up to 40% of RAAs, but we could find no article reporting calcification(s) inside the RAA.…”

Large renal artery aneurysm masquerading as renal cell carcinoma

“…To date two cases of RAA mimicking neoplastic renal masses have been reported in the literature while two presentations with pseudoaneurysm have also been described. 2 , 3 , 4 , 5 Unfortunately both radical and partial nephrectomy have been performed where pre-operative radiological diagnosis of RCC was later proved incorrect on pathological analysis. 2 , 5 Whilst typically not standard practice, in this case US duplex was ordered to further clarify the architecture of the lesion and blood flow.…”