Renal Artery Aneurysm Research Articles

Aneurysm of renal artery mimicking as a renal cyst: A case report

Aneurysm of renal artery mimicking as a renal cyst: A case report

Endovascular Treatment of a Giant Renal Artery Aneurysm with High-Flow Renal Arteriovenous Malformation

Renal artery aneurysms (RAAs) are rare lesions with a prevalence of less than 1% in the general population. Renal arteriovenous malformations (AVMs) are rare lesions with an estimated incidence of less than 0.04%. The coexistence of these two clinical entities is extremely rare and narrows the available treatment options by endovascular or open surgery. We describe a case of a giant symptomatic RAA type III, which was combined with a high-flow renal AVM in the right kidney. Using two vascular plugs, the RAA was excluded successfully. The perfusion of the right kidney’s lower pole was preserved by implantation of two covered stents in the inferior segmental renal artery.

Renal Artery Repair with Kidney Autotransplantation for Renal Artery Aneurysms

Kidney autotransplantation (ATx) is a treatment option for distal renal artery aneurysm (RAA). This systematic review evaluated the indications, treatment strategy, and outcome of kidney ATx to verify the value of this procedure in treating RAA.

Natural History of Renal Artery Aneurysms

Natural History of Renal Artery Aneurysms

Hypertension caused by a renal artery aneurysm.

Hypertension caused by a renal artery aneurysm.

Ex vivo Repair of Renal Artery Branch Aneurysm in Fibromuscular Dysplasia

Renal artery aneurysm is a rare disorder with an incidence of < 1%. We describe a case of fibromuscular dysplasia with right renal artery branch aneurysm, who had uncontrolled renovascular hypertension. The patient was successfully managed with ex vivo repair and reconstruction of the renal artery using reverse saphenous vein graft, followed by autotransplantation of the right kidney. Although surgically demanding, the technique is feasible and yielded good results.

Bilateral Renal Artery Aneurysms: about a Case

A renal artery aneurysm is defined as a dilated segment of the renal artery that exceeds twice the diameter of a normal renal artery. Although rare, the diagnosis and incidence of this entity has steadily increased with the routine use of cross-sectional imaging. In some cases, renal artery aneurysms can be clinically telling and potentially lethal. However, knowledge about their occurrence, natural history and prognosis with or without treatment is still limited. The purpose of this article is to review the recent literature concerning renal artery aneurysms, with particular attention to pathophysiology, aspect of imaging, indications for treatment, different technical options, post-procedural complications and treatment outcomes.

Bilateral Renal Artery Aneurysms: about a Case

A renal artery aneurysm is defined as a dilated segment of the renal artery that exceeds twice the diameter of a normal renal artery. Although rare, the diagnosis and incidence of this entity has steadily increased with the routine use of cross-sectional imaging. In some cases, renal artery aneurysms can be clinically telling and potentially lethal. However, knowledge about their occurrence, natural history and prognosis with or without treatment is still limited. The purpose of this article is to review the recent literature concerning renal artery aneurysms, with particular attention to pathophysiology, aspect of imaging, indications for treatment, different technical options, post-procedural complications and treatment outcomes

Trans-Arterial Embolization of High-Flow Renal Arteriovenous Fistula (AVF) with Concomitant Renal Artery Aneurysm

AbstractArteriovenous fistula (AVF) is an abnormal direct communication between an artery and the venous drainage without a capillary component. Although renal AVF is rare, detecting the disease is important to assist in management and, thus, help reverse the sequelae of the disease such as hypertension and heart failure. The clinical presentation and radiological features are important parameters that can help in the diagnosis and decision of treatment. We would like to share our successful approach to a 52-year-old female with idiopathic high-flow left renal AVF with concomitant renal artery aneurysm using a single Amplatzer vascular plug in the limit of our setting.

Successful emergency endovascular treatment of a ruptured big renal artery aneurysm

Successful emergency endovascular treatment of a ruptured big renal artery aneurysm

Management of a Giant Renal Artery Aneurysm in a Patient with Severe Hemophilia A

Patient: Male, 54-year-old Final Diagnosis: Giant right renal artery aneurysm Symptoms: Bilateral leg edema Medication: — Clinical Procedure: — Specialty: Hematology • Radiology • Urology Objective: Rare coexistence of disease or pathology Background:Classical hemophilia, or hemophilia A, is an X-linked recessive genetic disorder characterized by deficiency in clotting factor VIII. Renal artery aneurysms (RAAs) are also rare and are defined as a focal dilatation of the renal artery that exceeds 1.5 cm in diameter. These 2 rare conditions – giant RAA and hemophilia A – were simultaneously observed in our patient. This report presents a male patient with hemophilia A with a 10-cm aneurysm of the right renal artery, which was treated with transarterial coil embolization and factor VIII infusion. The giant RAA was an incidental finding and was suspected after the abdominal ultrasound (US).Case Report:We present the case of a 10-cm right RAA in a 54-year-old man with hemophilia A. The patient had a congenital severe coagulation factor VIII deficiency (hemophilia A). He presented at a routine hematologist visit with an atypical symptom of severe symmetrical leg edema. Laboratory tests showed increased levels of creatinine and proteinuria. Investigations proceeded with computed tomography (CT) and digital subtraction angiography (DSA). Endovascular coiling of the aneurysm was performed with perioperative recombinant coagulation factor VIII substitution, and the recovery was uneventful. At 6-year follow-up there are no signs of proteinuria, and kidney function was stable.Conclusions:We present a case of renal artery aneurysm effectively treated by endovascular embolization, showing the importance of managing patients with hemophilia A according to a guidelines-based multidisciplinary approach and ensuring the lowest possible risk of peri- and intraoperative complications by using minimally-invasive treatments.

Renal Artery Dimensions and Variation on Computed Tomography Angiogram: A Cross-sectional Study.

Introduction A knowledge of renal artery dimension is necessary for characterizing the physiological change as well as pathological process undergoing in the renal artery likely stenosis, ectasia, or aneurysm. This study aims to explore the anatomy of the renal artery with regards to its dimension, relation, and branching and identify the common anatomical variation. Materials and Methods The study was a retrospective hospital record-based study conducted during the period of one year from 2019 January to 2019 December. All abdominal CT angiograms were reviewed for renal artery anatomy and variation. Abnormal Abdominal CT angiograms were excluded from the study. Normal anatomy, dimensions, and variation of renal vasculature were assessed. ResultsA total of 110 patients included the inclusion criteria and was included in the study. The renal length and size of the renal artery were significantly larger on the left side. The renal artery diameter showed positive correlation with renal length (r= 0.432; p<0.001). No variation of the renal size of renal artery diameter was however noted with sex. Supernumerary arteries were seen in 33(30%) patients. The optimum cut-off value of renal artery diameter for predicting accessory renal artery was 5.35 or less which yielded a sensitivity of 75% and specificity of 70%. (AUC-0.79; p<0.001). When 4.15 mm was taken as cut-off, the specificity increased to 96% with a marked reduction in sensitivity to 3.6%. Conclusion Renal artery diameter is dependent on laterality, kidney size, and presence of accessory artery and independent of sex.

Renal artery aneurysm misdiagnosed as a pelvic stone: A case report.

Introduction and importanceRenal artery aneurysm (RAA) is an extremely rare condition that is usually symptomless and may be diagnosed by a chance in imaging. However, misdiagnosis is not out of mind and few cases of misdiagnosis of RAA with renal stone have been reported. Misdiagnosis leads to wrong treatment, so it is very important for the correct diagnosis.Case presentationWe reported a similar case in a 57 years old female that referred with right flank pain and ultrasonography and computed tomography (CT) scan reported a calcified mass, resembling renal stone. Through the operation the RAA was diagnosed; however, the mass was damaged and the patient underwent aneurysmectomy. Although she was a single kidney case, collateral circulation saved the kidney.Clinical discussionThe patients may be asymptomatic or may present symptoms like treatment-resistant hypertension, hematuria, thrombosis, renal infarction, abdominal, or flank pain. As literature shows the diagnosis of RAA is challenging and affects patients' timely treatment. Our patient, who was a single kidney person, also survived the condition with no nephrectomy. The case of our study was single kidney and the collateral vessels give a further chance to kidney for survival. Although the affected artery was not further used, the collateral vessels circulation helped the kidney and the patient survived nephrectomy. She was discharged with a normal state and normal urination.ConclusionThe timely diagnosis may help the patient with less invasive treatments.

Posterior nutcracker syndrome combined with right renal artery aneurysm: a case report

Background: Posterior Nutcracker syndrome (PNS) is a rare condition caused by the left renal vein was compressed between the abdominal aorta and the vertebral column. Diagnosis and therapeutic options of posterior nutcracker syndrome are still controversial, as symptoms are variable and not specific. Renal artery aneurysm (RAA) is also a rare disease and is generally discovered during diagnostic procedures performed with other conditions. Therefore, a patient co-ordinating both of these rare conditions cause enormous challenges in diagnosis and treatment.
 Method: A rare case report. 
 Clinical case: A 25 years old female had been hospitalized for macroscopic hematuria and pain in the hypogastrium. Renal duplex ultrasound and CT scan revealed retro aortic LRV and right renal artery aneurysm. She was operated successfully with anterior transposition of the LRV into the IVC, aneurysmectomy associated with revascularization of RAA.
 Conclusion: PNS combination with RAA is a rare condition unreported in medical literature, with treatment criteria still uncertain. However, surgery with anterior transposition of LRV and aneurysm repair may be a safe and effective technique.

Endovascular treatment of a giant renal artery aneurysm.

Endovascular treatment of a giant renal artery aneurysm.

Posterior nutcracker syndrome combined with right renal artery aneurysm: a case report

Background: Posterior Nutcracker syndrome (PNS) is a rare condition caused by the left renal vein was compressed between the abdominal aorta and the vertebral column. Diagnosis and therapeutic options of posterior nutcracker syndrome are still controversial, as symptoms are variable and not specific. Renal artery aneurysm (RAA) is also a rare disease and is generally discovered during diagnostic procedures performed with other conditions. Therefore, a patient co-ordinating both of these rare conditions cause enormous challenges in diagnosis and treatment.
 Method: A rare case report. 
 Clinical case: A 25 years old female had been hospitalized for macroscopic hematuria and pain in the hypogastrium. Renal duplex ultrasound and CT scan revealed retro aortic LRV and right renal artery aneurysm. She was operated successfully with anterior transposition of the LRV into the IVC, aneurysmectomy associated with revascularization of RAA.
 Conclusion: PNS combination with RAA is a rare condition unreported in medical literature, with treatment criteria still uncertain. However, surgery with anterior transposition of LRV and aneurysm repair may be a safe and effective technique.

Surgical treatment of visceral and renal abdominal artery aneurysms of various etiology

Visceral artery aneurysms are detected when complications occur or accidentally during examination for other diseases gastrointestinal tract, aimed at determining the functional significance. Over the past 10 years, we have observed 31 patients with abdominal visceral artery aneurysms, 10 patients had renal aneurysms, 15 had splenic arteries, hepatic artery and pancreatoduodenal artery aneurysms – in one case. The combination of aneurysms – in 2 cases: in one case – the renal artery with the splenic artery, in the other – the renal artery and the abdominal trunk. The patients ranged in age from 24 to 78 years, the average age is 43±6.5. Previously, infection was considered the most common cause of splenic artery aneurysms in 10 cases, with most patients complaining of fever, abdominal pain and a pulsating mass in the abdomen. And two patients with splenic artery aneurysm noted abdominal trauma. 3 had atherosclerotic changes. The causes of renal artery aneurysms are atherosclerosis in 6 cases, fibromuscular dysplasia in 2 cases, and Nonspecific aortoarteritis in 2 cases. Also, atherosclerotic etiology is present in aneurysms of the external iliac arteries aneurysms. Reconstructions on hepatobiliary aneurysms were performed in 6 (20%) cases, in 5 cases - resection with end-to-end anastomosis and in 2 cases - resection of splenic artery aneurysm, resection of splenic artery aneurysms with autovenous patch, clipping of splenic artery aneurysms – in 2 cases (6.5%), endovascular techniques were applied in 18 cases (58%). In 2 cases, nephroectomy was performed due to the spread of the aneurysm into the kidney gate and the lack of conditions for reconstruction. In the immediate and long-term (after 6 months and 3 years) postoperative period, the preservation of organ function in reconstructive and ligating methods of surgical treatment is the same. Signs of ischemia and impairment in the immediate postoperative period were not observed with reconstructive and ligating methods of surgical treatment. The choice of treatment method depends on the severity of the patient’s condition, clinical manifestations, as well as the localization of the aneurysm and its morphology. Preference is given to endovascular techniques, which are not traumatic enough and provide a good long-term result. However, in each case, the patient’s management tactics are individual, the choice of the optimal method of treatment of visceral artery aneurysms is based on data from the entire spectrum of possible diagnostic manipulations.

A Tailoring Technique for Multiple Saccular Renal Artery Aneurysms with Three Outflow Arteries at the Right Renal Hilum: Report of a Case

A Tailoring Technique for Multiple Saccular Renal Artery Aneurysms with Three Outflow Arteries at the Right Renal Hilum: Report of a Case

A case of retroperitoneal hematoma and hemorrhagic shock caused by spontaneous intraparenchymal renal artery aneurysm rupture

article: A case of retroperitoneal hematoma and hemorrhagic shock caused by spontaneous intraparenchymal renal artery aneurysm rupture - Italian Journal of Emergency Medicine 2021 December;10(3):165-7 - Minerva Medica - Journals

Concomitantly discovered visceral artery aneurysms do rarely grow during cancer therapy

Visceral artery aneurysms (VAA) are a rare entity of arterial aneurysms with the imminent threat of rupture. The impact of cancer and chemotherapy on the growth of VAAs is unknown. A retrospective dual center cohort study of patients with concomitant VAA and different types of cancer was conducted and the impact of various chemotherapeutic agents on VAA growth was studied by sequential CT analysis. For comparison, a non-cancer all comer cohort with VAAs and no cancer was studied to compare different growth rates. The primary endpoint was aneurysm progress or regression >1.75 mm. Chi-square test, Fisher's exact test and Mann-Whitney test was used for statistical comparison. In the 17-year-period from January 2003 to March 2020, 59 patients with 30 splenic artery aneurysms, 14 celiac trunk aneurysms, 11 renal artery aneurysms and 4 other VAA and additional malignancy were identified. 20% of patients suffered from prostate cancer, the rest were heterogeneous. The most prevalent chemotherapies were alkylating agents (23%), antimetabolites (14%) and mitose inhibitors (10%). Eight patients had relevant growth of their VAA and one patient showed diameter regression (average growth rate 0.1± 0.5 mm/year). Twenty-nine patients with 14 splenic, 11 RAAs (seven right) and 4 celiac trunk aneurysms were available in the non-cancer comparison cohort (average growth rate 0.5± 0.9 mm/year, p= 0.058). However, the growth rate of patients receiving operative treatment for relevant VAA growth was significantly higher (p= 0.004). VAAs grow rarely, and rather slow. Cancer and/or chemotherapy do not significantly influence the annual growth rate. Additional control examinations seem unnecessary.