• Spontaneous isolated celiac artery
• conservative treatment
• dissection
• endovascular treatment
• management

• Humans
• Celiac Artery/diagnostic imaging
• Celiac Artery/surgery
• Celiac Artery/physiopathology
• Female
• Middle Aged
• Aortic Dissection/diagnostic imaging
• Aortic Dissection/surgery
• Endovascular Procedures/instrumentation
• Treatment Outcome
• Blood Vessel Prosthesis Implantation/instrumentation
• Stents
• Computed Tomography Angiography

• Female
• Humans
• Male
• Middle Aged
• Aneurysm/diagnostic imaging
• Aneurysm/surgery
• Embolization, Therapeutic/adverse effects
• Embolization, Therapeutic/methods
• Endovascular Procedures/adverse effects
• Endovascular Procedures/methods
• Observational Studies as Topic
• Renal Artery/diagnostic imaging
• Renal Artery/surgery
• Risk Factors
• Treatment Outcome

• Renal artery aneurysms
• aneurysm rupture
• endovascular repair
• open repair
• vascular disease
• vascular surgery

• Omental infarction
• omental artery aneurysm
• transcatheter arterial embolization
• visceral artery aneurysm

• Male
• Humans
• Female
• Middle Aged
• Aged
• Aged, 80 and over
• Treatment Outcome
• Aneurysm
• Arteries
• Embolization, Therapeutic/adverse effects
• Retrospective Studies
• Infarction/etiology

• Case report of an intraparenchymal renal artery aneurysms
• Renal artery aneurysm
• Solitary kidney
• Super selective endovascular embolization

• coil embolism
• endovascular
• renal artery aneurysm
• stenting
• study design

• coil embolization
• non-contrast-enhanced magnetic resonance angiography
• ultra-short echo-time

• Humans
• Aneurysm/diagnostic imaging
• Aneurysm/therapy
• Magnetic Resonance Angiography/methods
• Hemodynamics
• Artifacts
• Arteries
• Intracranial Aneurysm/diagnostic imaging
• Intracranial Aneurysm/therapy
• Treatment Outcome
• Follow-Up Studies
• Angiography, Digital Subtraction

• stenting
• transfemoral access
• transradial access
• visceral pseudoaneurysms

• aneurysm rupture
• ruptured splenic aneurysms
• shock during pregnancy
• splanchnic aneurysms
• splenectomy
• splenic artery aneurysms and pseudoaneurysms
• transarterial artery embolization
• visceral aneurysms

• endovascular aneurysm repair
• haemoperitoneum
• multi-disciplinary team approach
• pseudo aneurysm
• right colic artery
• traumatic pseuoaneurysm
• urgent laparotomy

• Aneurysm
• Celiac artery
• Endovascular
• Stent graft

• Asymptomatic
• Growth rate
• Natural history
• Renal artery
• Renal artery aneurysm

• clinical features
• endovascular treatment
• renal artery aneurysms
• retrospective analysis
• safety and efficacy

Advances in endovascular approaches have resulted in increasing utilization of minimally invasive techniques to treat visceral artery aneurysms including renal artery aneurysms (RAAs), with high rates of success. The basic endovascular approach to treating RAAs includes stent graft exclusion or coil embolization. Treatment of RAAs with wide necks or at the bifurcation of the main vessel is facilitated by scaffolding techniques, which have been previously described. These techniques have their limitations and cannot be used in all situations. We describe a scaffolding technique using the Comaneci device (Rapid Medical, Israel), a retrievable mesh device meant for intracranial treatment of wide neck or bifurcation aneurysms that we used to safely and successfully treat a 2 cm RAA.

• MDCTA
• angiography
• embolization
• splenic artery pseudoaneurysm

• Mesenteric artery aneurysm
• Renal artery aneurysm
• Splenic artery aneurysm
• Visceral Aneurysm

• Visceral
• artery
• endovascular
• peripheral
• pseudoaneurysm

• coiling
• covered stent
• embolization
• endovascular treatment
• flow-diverting stent
• visceral aneurysm

• acute pancreatitis
• biliary obstruction
• visceral artery pseudoaneurysm

Visceral and renal artery aneurysms (VAA, RAA) are very rare pathologies. Both surgical and endovascular therapies are discussed as therapeutic options for ruptured and non-ruptured aneurysm repair; we describe our experience in the open and endovascular management of these entities.

Retrospective database analysis of 60 treated VAA and RAA in 59 patients between 1994 and 2020. Outcome data was descriptively analyzed.

Thirty-seven aneurysms were surgically treated and 23 interventionally. In the total study cohort, we observed a mortality of 1.7% and a morbidity of 18.6%. One major complication occurred. The morbidity was higher after surgical repair in ruptured and non-ruptured cases. The mean aneurysm diameter was 30.5 ± 15.6 mm. Patients with hepatic or pancreaticoduodenal artery aneurysms presented more often in the stage of rupture, without differences in aneurysm size. The length of hospital stay after endovascular repair was significantly shorter compared to open surgical treatment (7.2 ± 6.9 days versus 11.8 ± 6.7 days, p = 0.014), but only in elective cases. Primary technical success was significantly better in patients that underwent surgical repair in an intention to treat analysis (100% versus 79.3%). The mean follow-up of the cohort was 53.5 months (range 3–207 months).

Elective endovascular therapy and open surgery of VAA and RAA are safe procedures with a good periprocedural and long-term outcome. Surgical revascularization showed a better primary technical success but was associated with longer length of hospital stays.

• Endovascular therapy
• Open surgical therapy
• Visceral artery aneurysm,Renal artery aneurysm

To investigate the efficacy and safety of endovascular double-layer bare stent placement for the treatment of traumatic false aneurysm (TFA).

This is a retrospective review of five patients with TFA undergone double-layer bare stent placement in our center between February 2011 and August 2020. There are 2 males and 3 females aged 29-65 years, with an average age of 43 years. One case suffered from common carotid artery pseudoaneurysm, and four cases suffered superficial femoral artery pseudoaneurysm.

The endovascular interventional treatment was successful in all 5 patients, and the pseudoaneurysms disappeared after treatment. No TFA recurrence and no complications such as instent stenosis, stent migration, stent fracture, endoleak, and infection were observed during the 3-99-month follow-up period.

For the treatment of TFA, endovascular interventional therapy with double-layer bare stent was minimally invasive, safe, and effective with fewer complications. It could preserve all branches of parent artery and had the advantage of lower cost. It can be used in the treatment of TFA in selected cases. However, further clinical researches with larger cohorts are needed before its long-term efficacy can be completely clarified.

Background: Visceral artery aneurysms and pseudoaneurysms are uncommon phenomena with a high mortality rate in cases of rupture. These rare vascular pathologies are usually asymptomatic and are therefore generally discovered incidentally on computed tomography or magnetic resonance imaging examination. Current therapeutic options have trended toward a minimally invasive approach because of evolving endovascular treatment options, with open operations typically reserved for cases of intraabdominal hemorrhage.

Case Report: We describe a case of gastroduodenal artery pseudoaneurysm manifesting as obstructive jaundice and pancreatitis because of extrahepatic compression of the common bile duct and pancreatic duct by mass effect. Open repair was ultimately required secondary to arterial anatomy that was not amenable to any endovascular treatment approach.

Conclusion: While endovascular options are the preferred treatment modality for visceral artery aneurysms and pseudo-aneurysms, some cases require definitive open repair for a variety of reasons, including unsuitable anatomy.

• Aneurysm
• aneurysm–false
• jaundice–obstructive
• pancreatitis

Flow-diverter stents (FDS) are designed to maintain laminar flow in the parent artery and sidebranches and to promote thrombosis of the aneurysm. Although these devices were developed for use in intracranial circulation, FDS could be employed to treat aneurysms regardless of their location, when anatomic factors may limit the efficacy of classic endovascular techniques. The objective of this study is to describe the initial experience of a single center in the treatment of visceral artery aneurysms and pseudoaneurysms (VAA-VAP) with cerebral FDS, analyzing safety, efficacy and 1-year outcome. Between 2016 and 2018 six patients (4 women, mean age 57.6) underwent treatment with FDS of 4 VAA and 2 VAP located in renal (4), hepatic (1) and splenic arteries (1). Mean aneurysm diameter was 14.3 mm (range 8–22). All the aneurysms had sidebranches arising from the neck or had an unfavorable dome-to-neck ratio. Technical success, safety, efficacy and 1-year outcome were analyzed. Follow-ups (FU) with Color-Doppler US and CTA ranged from 12 to 36 (mean 20) months.

Technical success was achieved in all cases. There were no aneurysm rupture nor reperfusion after exclusion. Five out of six (83.3%) FDS were patent at each FU; all the aneurysms showed shrinkage with a mean dimensional reduction rate of 55.8%. Sac thrombosis was observed in 4 aneurysms at 1 (n = 3) and at 12-month FUs. There was one sidebranch occlusion with evidence of a small area of kidney hypoperfusion at the 12-month FU, which was asymptomatic. In one patient, a reintervention was needed because CTA showed a severe in-stent stenosis, which was symptomatic. Mean hospitalization was 4.1 days.

Treatment of morphologically complex VAA and VAP with cerebral FDS proved to be safe and efficient. Stronger evidence from larger populations are required.

• Endovascular aneurysm exclusion
• Flow diversion
• Flow diverter
• Flow diverting stent
• Peripheral artery aneurysm
• Visceral artery aneurysm

Visceral artery pseudoaneurysms (VAPA) are associated with a high morbidity and mortality, but sometimes are missed in initial computed tomography (CT) examinations. The aims of this study were to determine the frequency and causes of misdiagnoses of VAPA with CT.

We retrospectively identified 77 patients with VAPA in our database who underwent contrast-enhanced CT. The frequency of delayed diagnosis was determined and the reasons were noted. We identified the etiology of VAPA, measured size, and noted the affected vessels.

Forty-five of the 77 patients (58 %) had a delayed diagnosis of VAPA. There was no difference in the rate of missed VAPA in symptomatic compared to asymptomatic patients (p = 0.255). The majority of VAPA were associated with previous surgery or interventions (n = 48/62 %). The major affected vessel was the hepatic (n = 31) followed by the splenic artery (n = 17). The main reasons for misdiagnosis were a missed arterial phase in CT (n = 16/36 %), artifacts masking the aneurysm (n = 9/20 %), overlooked pseudoaneurysm (n = 19/42 %), and misinterpretation by attending radiologists (n = 1/2 %). Missed VAPA were smaller (median 8 mm) than those VAPA that were initially diagnosed (median 13 mm, p < 0.01), but occurred with a similar frequency in larger and smaller visceral arteries (p = 0.601).

Our study showed that 58 % of VAPA were diagnosed with delay, with the following four reasons for misdiagnosis: Lack of an arterial contrast phase in CT, no techniques for artifact reduction, and lack of awareness of the radiologists. Avoiding delayed diagnosis will most probably improve outcome of patients with VAPA.

• Computed tomography
• Endovascular procedures
• Pseudoaneurysm
• Visceral artery

• Celiac artery aneurysm
• Embolization
• Visceral aneurysms
• Visceral angiography

Pseudoaneurysms of the renal artery are fairly uncommon and mostly asymptomatic. They develop mostly in the right renal artery and in female patients.

In this report, a female patient with an intraparenchymal renal artery pseudoaneurysm with one year follow up is described. She presented with non-specific abdominal pain. A computed tomography scan revealed hydronephrosis of the right kidney and a giant, intracapsular, contained rupture of a pseudoaneurysm of the right renal artery. The patient was admitted to hospital and underwent a successful selective embolisation of the pseudoaneurysm. Follow up at one year showed normal renal function and an excluded aneurysm.

Although relatively uncommon, renal artery pseudoaneurysms should be considered in the work up of patients with colicky flank pain. As a treatment option, endovascular approaches are appealing because they are less invasive. Successful treatment can prevent resection of the affected kidney.

•

This report describes the rare case of a young female patient with contained rupture of a right renal artery pseudoaneurysm.

• Endovascular procedures
• False aneurysm
• Hydronephrosis
• Rare disease
• Renal artery
• Spontaneous rupture

• aneurysm
• general surgery
• pancreas
• splenic artery

• Aged
• Aneurysm/complications
• Aneurysm/diagnosis
• Aneurysm/surgery
• Disease Management
• Humans
• Male
• Postoperative Care/methods
• Splenectomy/methods
• Splenic Artery
• Tomography, X-Ray Computed
• Vascular Calcification/complications
• Vascular Calcification/diagnosis
• Vascular Calcification/surgery
• Vascular Surgical Procedures/methods

• Celiac artery aneurysm
• Posttraumatic aneurysm
• Visceral artery aneurysm

• Acute mesenteric ischaemia
• Arterial embolism
• Arterial thrombosis
• Chronic mesenteric ischaemia
• Guidelines
• Isolated dissections of the mesenteric arteries
• Mesenteric arterial aneurysms
• Mesenteric venous thrombosis
• Non-occlusive mesenteric ischaemia
• Venous mesenteric ischaemia

• Endovascular Procedures/adverse effects
• Endovascular Procedures/standards
• Humans
• Mesenteric Arteries/diagnostic imaging
• Mesenteric Arteries/physiopathology
• Mesenteric Arteries/surgery
• Mesenteric Veins/diagnostic imaging
• Mesenteric Veins/physiopathology
• Mesenteric Veins/surgery
• Predictive Value of Tests
• Risk Factors
• Splanchnic Circulation
• Treatment Outcome
• Vascular Diseases/diagnostic imaging
• Vascular Diseases/physiopathology
• Vascular Diseases/therapy
• Vascular Surgical Procedures/adverse effects
• Vascular Surgical Procedures/standards

• Visceral aneurysm
• endovascular procedures
• treatment outcome
• vascular surgical procedures

• Aneurisma de arteria visceral
• Embolización
• Embolization
• Endovascular
• Pseudoaneurisma
• Pseudoaneurysm
• Stent recubierto
• Stent-graft
• Visceral artery aneurysm

Background. Splenic artery aneurysm (SAA) is an uncommon and difficult diagnosis. SAA is more common in females. Only 20% of SAA is symptomatic and may present as a rupture. A ruptured SAA is associated with a 25% mortality rate. Case Presentation. We present a case of a male patient with a bleeding SAA that rapidly increased in size. Distal coiling was technically impossible and despite proximal coil embolisation the SAA continued to bleed. A laparotomy including splenectomy and partial pancreatectomy was performed with an uneventful patient recovery. Discussion. Endovascular management is currently considered the optimal treatment of SAA. However, careful monitoring and follow-up is needed after embolisation as rapid recanalization of the SAA may possibly occur, especially when distal coiling of the aneurysm is unsuccessful. Conclusion. Endovascular treatment of an SAA is not necessarily effective. Surgeons must be prepared to perform open procedures to further reduce mortality rates.