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1.
Radiol Case Rep ; 17(9): 3405-3409, 2022 Sep.
Article in English | MEDLINE | ID: mdl-35880238

ABSTRACT

Hepatocellular carcinoma (HCC) is a highly morbid disease both in the United States and worldwide. Chronic liver inflammation puts people at risk of developing HCC. As chronic liver disease prevalence increases in the United States there can be an expected rise in HCC. Spontaneous regression of HCC is a rare phenomenon but can provide much needed information on how to better understand disease characteristics and progression. The two proposed theories that may explain spontaneous regression are tumor hypoxia and immunologic reaction. In these cases, we describe 3 patients with heavy disease burden at presentation who showed spontaneous regression of cancer. The patient's characteristics correlate most with systemic immunologic reaction resulting in spontaneous regression. Unfortunately, all of these patients had disease recurrence shortly after regression. By studying patient data in cases of spontaneous regression, we can gain a better understanding of disease progression and which exogenous or endogenous factors determine HCC mortality. With this knowledge we hope to better characterize how spontaneous regression occurs, and how we can use this information to help in developing treatment options in the future.

2.
J Vasc Surg Cases Innov Tech ; 7(3): 447-449, 2021 Sep.
Article in English | MEDLINE | ID: mdl-34278081

ABSTRACT

An aneurysm of the inferior mesenteric artery is a rarely described clinical presentation. We have presented the case of a ruptured aneurysm originating from a branch of the inferior mesenteric artery that might represent an aneurysm of the left colic artery or the arc of Riolan. Aneurysms of this anatomic location can develop secondary to mesenteric occlusive disease, alterations in mesenteric blood flow from previous operations, or connective tissue disease. In the present case, a patient with a ruptured inferior mesenteric artery branch aneurysm had presented with intra-abdominal hemorrhage, which was successfully treated with endovascular embolization.

3.
Clin Appl Thromb Hemost ; 26: 1076029620928420, 2020.
Article in English | MEDLINE | ID: mdl-32539524

ABSTRACT

Pulmonary embolism (PE) treatment depends on disease severity and risk of complications. Physician and institutional expertise may influence the use of reperfusion therapy (RT) such as systemic thrombolysis (SL) and catheter-directed interventions (CDI). We aimed to investigate the effects of a consensus-based treatment algorithm (TA) and subsequent implementation of PE response team (PERT) on RT modality choices and patient outcomes. A cohort of PE patients admitted to a tertiary care hospital between 2012 and 2017 was retrospectively evaluated. Demographics, clinical variables, RT selections, and patient outcomes during 3 consecutive 2-year periods (baseline, with TA, and with TA+PERT) were compared. Descriptive statistics were used for data analysis. A total of 1105 PE patients were admitted, and 112 received RT. Use of RT increased from 4.7% at baseline to 8.2% and 16.1% during the TA and TA+PERT periods. The primary RT modality transitioned from CDI to SL, and reduced-dose SL became most common. Treatment selection patterns remained unchanged after PERT introduction. Hospital length of stay decreased from 4.78 to 2.96 and 2.81 days (P < .001). Most of the hemorrhagic complications were minor, and their rates were similar across all 3 periods and between SL and CDI. No major hemorrhages occurred in patients treated with reduced-dose SL. In conclusion, TA and PERT represent components of a decision support system facilitating treatment modality selection, contributing to improved outcomes, and limiting complications. Treatment algorithm emerged as a factor providing consistency to PERT recommendations.


Subject(s)
Pulmonary Embolism/therapy , Algorithms , Consensus , Female , Humans , Male , Middle Aged , Pulmonary Embolism/complications , Retrospective Studies , Treatment Outcome
4.
J Vasc Surg Cases Innov Tech ; 6(1): 143-146, 2020 Mar.
Article in English | MEDLINE | ID: mdl-32154470

ABSTRACT

Retroperitoneal hematoma is a potential complication of femoral venous access that rarely leads to bilateral ureteral obstruction. We present the case of a 73-year-old woman who underwent an ablation procedure for atrial fibrillation complicated by laceration of an aberrant obturator artery during femoral venous cannulation, leading to a compressive retroperitoneal hematoma, bilateral ureteral obstruction, acute renal failure, and renal forniceal rupture. The patient was successfully treated with embolization of the inferior epigastric artery and aberrant obturator artery, hematoma evacuation, and ureteral stent placement. This case illustrates a rare complication of arterial laceration during femoral venous access without ultrasound guidance.

5.
Vasc Endovascular Surg ; 50(3): 156-9, 2016 Apr.
Article in English | MEDLINE | ID: mdl-26975607

ABSTRACT

Ehlers-Danlos syndrome (EDS) encompasses a group of rare genetic connective tissue disorders. The vascular type (type IV) poses the most serious risk to patients. Diagnosis is usually difficult, especially if patients lack a family history. Life-threatening vascular emergency such as dissection or rupture can be the first presenting symptom. Management of the disease can pose a clinical challenge due to the emergency of presentation, tissue friability, and lack of clear management recommendations. We report a unique case of a 40-year-old man who presented with a ruptured celiac artery and a strong family history of EDS. This case highlights the difficulties and complications associated with treating this uncommon and serious disease.


Subject(s)
Aneurysm, False/etiology , Aneurysm, Ruptured/etiology , Aortic Dissection/etiology , Celiac Artery , Ehlers-Danlos Syndrome/complications , Adult , Aortic Dissection/diagnostic imaging , Aortic Dissection/surgery , Aneurysm, False/diagnostic imaging , Aneurysm, False/surgery , Aneurysm, Ruptured/diagnostic imaging , Aneurysm, Ruptured/surgery , Blood Vessel Prosthesis Implantation , Celiac Artery/diagnostic imaging , Celiac Artery/surgery , Computed Tomography Angiography , Disease Progression , Ehlers-Danlos Syndrome/diagnosis , Endovascular Procedures/instrumentation , Humans , Male , Stents , Treatment Outcome
6.
J Gastrointest Surg ; 20(3): 564-7, 2016 Mar.
Article in English | MEDLINE | ID: mdl-26376993

ABSTRACT

A consensus surveillance protocol is lacking for non-cirrhotic patients with hypervascular liver lesions presumed to represent hepatocellular adenomas. Patients with hypervascular liver lesions <5 cm not meeting criteria for focal nodular hyperplasia or hepatocellular carcinoma underwent surveillance with contrast-enhanced magnetic resonance imaging (MRI) 6, 12, and 24 months after baseline imaging. If lesions remained stable or decreased in size, then surveillance imaging was discontinued. Between 2011 and 2014, 116 patients with hypervascular liver lesions were evaluated. Seventy-nine patients were eligible for the surveillance protocol. Median follow-up was 24 months (range, 1-144 months). One patient (1 %) continued oral contraceptive pill (OCP) use and presented with hemorrhage requiring embolization 5 months after initial diagnosis. Ten patients (13 %) underwent elective embolization or surgical resection for size ≥5 cm. The remaining 68 patients (86 %) continued surveillance without hemorrhage or malignant transformation. Risk factors for requiring intervention during the surveillance period included younger age, larger lesion size, and estrogen use (all p < 0.05). Patients with hepatocellular adenomas <5 cm can safely be observed after discontinuing OCP with serial imaging 6, 12, and 24 months after diagnosis. If lesions remain stable or decrease in size, then longer-term surveillance is unlikely to identify patients at risk for complications.


Subject(s)
Adenoma/pathology , Liver Neoplasms/pathology , Population Surveillance , Watchful Waiting , Adenoma/surgery , Adult , Aged , Clinical Protocols , Cohort Studies , Female , Humans , Liver Neoplasms/surgery , Magnetic Resonance Imaging , Male , Middle Aged , Patient Selection , Time Factors , Young Adult
7.
Int J Gen Med ; 8: 221-5, 2015.
Article in English | MEDLINE | ID: mdl-26185463

ABSTRACT

Popliteal artery entrapment syndrome (PAES) is an uncommon condition resulting from an abnormal anatomic relationship between the popliteal artery and the surrounding musculature. The compression created by this variance in anatomy can lead to ischemia and vascular claudication. The diagnosis of PAES requires a thorough patient history and physical exam, a high index of suspicion, and dedicated imaging techniques. Several treatment options are available, including surgical intervention, thrombolysis, or a combination of these depending on the clinical indication. We present a case of PAES in a 34-year-old man who presented with typical symptoms illustrative of the complicated decision making related to this disorder.

8.
Semin Intervent Radiol ; 32(2): 67-77, 2015 Jun.
Article in English | MEDLINE | ID: mdl-26038615

ABSTRACT

Minimally invasive percutaneous interventions are often used for enteral nutrition, biliary and urinary diversion, intra-abdominal fluid collection drainage, and central venous access. In most cases, radiologic and endoscopic placement of catheters and tubes has replaced the comparable surgical alternative. As experience with catheters and tubes grows, it becomes increasingly evident that the interventional radiologist needs to be an expert not only on device placement but also on device management. Tube dysfunction represents the most common complication requiring repeat intervention, which can be distressing for patients and other health care professionals. This manuscript addresses the etiologies and solutions to leaking and obstructed feeding tubes, percutaneous biliary drains, percutaneous catheter nephrostomies, and drainage catheters, including abscess drains. In addition, we will address the obstructed central venous catheter.

9.
Semin Dial ; 28(3): E30-4, 2015.
Article in English | MEDLINE | ID: mdl-25482275

ABSTRACT

The appropriate management of nonmaturing arteriovenous (AV) fistulae continues to be a controversial issue. While coil embolization of accessory side-branch veins can be performed to encourage maturation of nonmaturing AV fistulae, the true efficacy and optimal patient population are not well understood. Fistulagrams performed on nonmaturing AV fistulae were retrospectively reviewed in 145 patients (86 males, median age 63 years) for the presence of accessory veins. Fistula and accessory vein measurements were obtained, as were rates of eventual fistula maturation after accessory vein coil embolization. Of 145 nonmaturing fistulae, 49 (34%) had a stenosis without any accessory veins, 76 (52%) had a stenosis and one or more accessory veins, and 20 (14%) had an accessory vein without concurrent stenosis. Eighteen AV fistulae had one or more accessory veins without coexisting stenosis. Nine fistulae had a caliber decrease immediately downstream from the accessory vein. Coil embolization of dominant accessory veins with a caliber decrease immediately downstream (n = 6) resulted in a 100% eventual fistula maturation rate versus 67% for fistulae without this configuration (n = 6, p = 0.15). Accessory vein size was not correlated with maturation rates (p = 0.51). The majority of nonmaturing fistulae with accessory veins had a coexisting stenosis. Higher maturation rates may result with selected anatomic parameters, although additional studies with more robust sample sizes are needed prior to definitive conclusions.


Subject(s)
Arteriovenous Shunt, Surgical/adverse effects , Renal Dialysis/methods , Veins/surgery , Adult , Aged , Angiography , Arteriovenous Shunt, Surgical/methods , Blood Vessel Prosthesis , Embolization, Therapeutic/methods , Female , Humans , Male , Middle Aged , Retrospective Studies , Treatment Failure
11.
J Vasc Interv Radiol ; 24(12): 1845-52, 2013 Dec.
Article in English | MEDLINE | ID: mdl-24094674

ABSTRACT

PURPOSE: To evaluate technical success and long-term outcomes of percutaneous primary jejunostomy tubes for postpyloric enteral feeding compared with percutaneous gastrojejunostomy (GJ) tubes. MATERIALS AND METHODS: Over a 25-month interval, 41 consecutive patients (26 male; mean age, 55.9 y) underwent attempted fluoroscopy-guided direct percutaneous jejunostomy tube insertion. Insertions at previous jejunostomy tube sites were excluded. The comparison group consisted of all primary GJ tube insertions performed over a 12-month interval concomitant with the jejunostomy tube interval (N = 169; 105 male; mean age, 59.4 y). Procedural, radiologic, and clinical data were retrospectively reviewed. Intervention rates were expressed as events per 100 catheter-days. RESULTS: The technical success rate for percutaneous jejunostomy tube insertion was 96%, versus 93% for GJ tubes (P = .47). Mean fluoroscopy times were similar for jejunostomy and GJ tubes (9.8 vs 10.0 min, respectively; P value not significant). Jejunostomy tubes exhibited a lower rate of catheter dysfunction than GJ tubes, with catheter exchange rates of 0.24 versus 0.93, respectively, per 100 catheter-days (P = .045). GJ tube tip retraction into the stomach occurred in 9.5% of cases, at a rate of 0.21 per 100 catheter-days. Intervention rates related to leakage were 0.19 and 0.03 for jejunostomy and GJ tubes, respectively (P < .01). Jejunostomy and GJ tubes exhibited similar rates of catheter exchange for occlusion and replacement as a result of inadvertent removal. No major complications were encountered in either group. CONCLUSIONS: Percutaneous insertion of primary jejunostomy tubes demonstrated technical success and complication rates similar to those of GJ tubes. Jejunostomy tubes exhibited a lower dysfunction rate but a higher leakage rate compared with GJ tubes.


Subject(s)
Enteral Nutrition/instrumentation , Gastric Bypass/instrumentation , Jejunostomy/instrumentation , Radiography, Interventional , Adult , Aged , Aged, 80 and over , Enteral Nutrition/adverse effects , Equipment Design , Equipment Failure , Female , Fluoroscopy , Gastric Bypass/adverse effects , Humans , Jejunostomy/adverse effects , Male , Middle Aged , Radiography, Interventional/methods , Retrospective Studies , Risk Factors , Time Factors , Treatment Outcome , Young Adult
12.
J Vasc Interv Radiol ; 24(9): 1295-302, 2013 Sep.
Article in English | MEDLINE | ID: mdl-23891045

ABSTRACT

PURPOSE: To determine rates of dysfunction and infection for tunneled internal jugular vein hemodialysis catheters based on laterality of insertion and catheter tip position. MATERIALS AND METHODS: Retrospective review of a procedural database for tunneled internal jugular vein hemodialysis catheter placements between January 2008 and December 2009 revealed 532 catheter insertions in 409 patients (234 male; mean age, 54.9 y). Of these, 398 catheters were placed on the right and 134 on the left. The catheter tip location was categorized as superior vena cava (SVC), pericavoatrial junction, or mid- to deep right atrium based on review of the final intraprocedural radiograph. The rates of catheter dysfunction and catheter-related infection (reported as events per 100 catheter-days) were analyzed. RESULTS: Catheters terminating in the SVC or pericavoatrial junction inserted from the left showed significantly higher rates of infection (0.50 vs 0.27; P = .005) and dysfunction (0.25 vs 0.11; P = .036) compared with those inserted from the right. No difference was identified based on laterality for catheter tip position in the mid- to deep right atrium. Left-sided catheters terminating in the SVC or pericavoatrial junction had significantly more episodes of catheter dysfunction or infection than catheters terminating in the mid- to deep right atrium (0.84 vs 0.35; P = .006), whereas no significant difference was identified for right-sided catheters based on tip position. CONCLUSIONS: When inserted from the left internal jugular vein, catheter tip position demonstrated a significant impact on catheter-related dysfunction and infection; this relationship was not demonstrated for right-sided catheters.


Subject(s)
Catheter-Related Infections/mortality , Catheterization, Central Venous/mortality , Central Venous Catheters/statistics & numerical data , Jugular Veins/surgery , Prosthesis Failure , Renal Dialysis/instrumentation , Renal Dialysis/mortality , Catheterization, Central Venous/instrumentation , Catheterization, Central Venous/methods , Causality , Female , Humans , Incidence , Male , Middle Aged , North Carolina/epidemiology , Retrospective Studies , Risk Factors , Survival Rate , Treatment Outcome
13.
J Comput Assist Tomogr ; 37(3): 415-8, 2013.
Article in English | MEDLINE | ID: mdl-23674014

ABSTRACT

OBJECTIVE: To determine the prevalence of nutcracker phenomenon (left renal vein compression by the superior mesenteric artery) and secondary anatomic findings using multidetector computed tomographic (CT) angiography in an asymptomatic population. METHODS: Ninety-nine consecutive CT angiograms for potential renal transplant donors (mean age, 39.0 years; 42 males) without variant renal vein anatomy were reviewed retrospectively. The diameters of the maximal left renal vein, left renal vein between the aorta and superior mesenteric artery, and draining gonadal and lumbar veins were measured. Sex, age, hematuria, proteinuria, and abdominal or flank pain were recorded. RESULTS: Twenty-three patients had 50% to 70% stenosis, and 4 patients had greater than 70% stenosis of the left renal vein. Dilated gonadal and lumbar veins were found in 16 and 28 patients, respectively. Four patients had hematuria. These findings were not significantly associated with left renal vein compression. CONCLUSIONS: Nutcracker phenomenon and dilated veins originating from the left renal vein are common incidental CT findings and nonspecific for the diagnosis of nutcracker syndrome.


Subject(s)
Angiography/methods , Multidetector Computed Tomography/methods , Renal Nutcracker Syndrome/diagnostic imaging , Adult , Analysis of Variance , Chi-Square Distribution , Contrast Media , Female , Humans , Incidental Findings , Iopamidol , Kidney Transplantation , Living Donors , Male , Prevalence , Renal Nutcracker Syndrome/epidemiology , Retrospective Studies
14.
J Vasc Access ; 14(4): 383-7, 2013.
Article in English | MEDLINE | ID: mdl-23599138

ABSTRACT

PURPOSE: To determine the impact of the phase of respiration on CVC tip position using cross-sectional imaging. METHODS: We retrospectively analyzed the CT scans of 24 consecutive patients (eight men and 16 women, mean age 56.3 years, range 18-79) who underwent a CT scan protocol that includes both imaging of the thorax in inspiration and expiration. Only patients with a central venous catheter and absence of any substantial pulmonary pathology that might affect lung volumes were included. Measurements of the catheter tip location and central venous structures were obtained from inspiratory and expiratory phase images in each patient and compared using the paired t test. RESULTS: The length of the SVC and superior mediastinum were significantly longer during inspiration compared to expiration (9 mm and 7 mm respectively, P<0.001 for both). The distance between the superior and inferior cavo-atrial junction did not change significantly with respiration. The catheter tip location moved on average 9 mm (range 0-25 mm) cephalad during inspiration compared to expiration (P=0.001) in relation to the superior cavoatrial junction. The amount of catheter tip movement correlated significantly with the degree of diaphragmatic excursion with respiration (R=0.58). During inspiration, the cavo-atrial junction was on average 11 mm inferior to the right cardiomediastinal angle observed on radiography, but was nearly identical during expiration (R=0.78, P<0.001). CONCLUSIONS: The central catheter tip position varied significantly with respiratory motion, with a mean excursion of 9 mm. The right cardiomediastinal border demonstrated a strong correlation with the actual location of the superior cavo-atrial junction in expiration, but not in inspiration.


Subject(s)
Catheterization, Central Venous/instrumentation , Central Venous Catheters , Diaphragm/physiology , Exhalation , Inhalation , Adolescent , Adult , Aged , Female , Humans , Jugular Veins/diagnostic imaging , Male , Middle Aged , Movement , Muscle Contraction , Phlebography/methods , Predictive Value of Tests , Retrospective Studies , Subclavian Vein/diagnostic imaging , Tomography, X-Ray Computed , Vena Cava, Inferior/diagnostic imaging , Vena Cava, Superior/diagnostic imaging , Young Adult
15.
AJR Am J Roentgenol ; 200(4): 904-8, 2013 Apr.
Article in English | MEDLINE | ID: mdl-23521468

ABSTRACT

OBJECTIVE: The purpose of this study was to determine the accuracy of ultrasound for detecting transjugular intrahepatic portosystemic shunt (TIPS) malfunction in covered stents in comparison with bare metal stents. MATERIALS AND METHODS: During a 6-year period, 126 TIPS angiography examinations were performed in 78 patients who had undergone a recent TIPS ultrasound examination. Radiology reports and images were retrospectively reviewed, and the sensitivity and specificity of sonographic parameters for detecting TIPS dysfunction were calculated using TIPS angiography and portosystemic gradient as the reference standards. RESULTS: Of 126 paired studies, 43 were in bare metal TIPS and 83 were in covered TIPS. Peak shunt velocity of covered and bare metal TIPS measured by ultrasound showed comparable sensitivities for detection of shunt dysfunction, using both depressed (< 90 cm/s) and elevated (> 200 cm/s) peak shunt velocity criteria. However, a depressed velocity was more specific in covered TIPS (0.939 vs 0.550, p < 0.001) whereas elevated velocity was more specific in bare TIPS (0.485 vs 0.800, p = 0.041). An interval change in peak TIPS velocity greater than 25% was significantly more sensitive in detection of dysfunction in covered TIPS (0.815 vs 0.400, p = 0.015) whereas detection based on main portal vein velocities (≤ 30 cm/s) was not statistically different in the two groups. CONCLUSION: Our data suggest that the accuracy of ultrasound for detection of TIPS shunt malfunction is at least as high in covered stents as in bare metal stents. Diagnostic performance for several sonographic parameters varied significantly between bare and covered stents, suggesting the need for optimization of sonographic criteria for covered stents.


Subject(s)
Portasystemic Shunt, Transjugular Intrahepatic/adverse effects , Prosthesis Failure , Stents/adverse effects , Ultrasonography, Doppler , Angiography , Case-Control Studies , Chi-Square Distribution , Female , Humans , Male , Middle Aged , Prosthesis Design , Retrospective Studies , Sensitivity and Specificity
16.
Skeletal Radiol ; 41(8): 933-8, 2012 Aug.
Article in English | MEDLINE | ID: mdl-22080362

ABSTRACT

OBJECTIVES: To describe a type of meniscus flap tear resembling a bucket-handle tear, named a "hemi-bucket-handle" tear; to compare its imaging features with those of a typical bucket-handle tear; and to discuss the potential therapeutic implications of distinguishing these two types of tears. MATERIALS AND METHODS: Five knee MR examinations were encountered with a type of meniscus tear consisting of a flap of tissue from the undersurface of the meniscus displaced toward the intercondylar notch. A retrospective analysis of 100 MR examinations prospectively interpreted as having bucket-handle type tears yielded 10 additional cases with this type of tear. Cases of hemi-bucket-handle tears were reviewed for tear location and orientation, appearance of the superior articular surface of the meniscus, presence and location of displaced meniscal tissue, and presence of several classic signs of bucket-handle tears. RESULTS: A total of 15/15 tears involved the medial meniscus, had tissue displaced toward the notch, and were mainly horizontal in orientation. The superior surface was intact in 11/15 (73.3%). In 1/15 (6.7%) there was an absent-bow-tie sign; 6/15 (40%) had a double-PCL sign; 14/15 (93.3%) had a double-anterior horn sign. CONCLUSION: We describe a type of undersurface flap tear, named a hemi-bucket-handle tear, which resembles a bucket-handle tear. Surgeons at our institution feel this tear would likely not heal if repaired given its predominantly horizontal orientation, and additionally speculate the tear could be overlooked at arthroscopy. Thus, we feel it is important to distinguish this type of tear from the typical bucket-handle tear.


Subject(s)
Fractures, Cartilage/pathology , Knee Injuries/pathology , Magnetic Resonance Imaging/methods , Menisci, Tibial/pathology , Tibial Meniscus Injuries , Adolescent , Adult , Feasibility Studies , Female , Fractures, Cartilage/surgery , Humans , Knee Injuries/surgery , Male , Menisci, Tibial/surgery , Preoperative Care/methods , Reproducibility of Results , Sensitivity and Specificity , Young Adult
17.
J Vasc Interv Radiol ; 23(1): 69-74, 2012 Jan.
Article in English | MEDLINE | ID: mdl-22019181

ABSTRACT

PURPOSE: To determine whether exclusion of pseudoaneurysms with the use of a covered stent in prosthetic arteriovenous (AV) hemodialysis access grafts impacts the incidence of eventual AV graft infection. MATERIALS AND METHODS: Review of an interventional radiology database for prosthetic AV graft interventions involving stent deployment anywhere within the AV graft circuit revealed 235 interventions in 174 patients between November 2004 and December 2008. Incidence of AV graft infection was analyzed based on stent type (bare metal vs covered), location, and indication for stent deployment on a per-stent, per-procedure, and per-graft basis. RESULTS: A total of 16.3% of the stent-implanted AV grafts were eventually surgically excised as a result of graft infection. Covered stents used to treat an intragraft pseudoaneurysm were more commonly associated with subsequent graft infection compared with bare or covered stents deployed within the graft for other reasons: 42.1% versus 18.2% (P = .011). Stents deployed in an intragraft location were also associated with a higher incidence of graft infection compared with those deployed at the venous anastomosis or outflow vein: 26.9% versus 6.9% (P < .001). No significant difference was identified in infection rates between bare and covered stents. CONCLUSIONS: Covered stent exclusion of intragraft pseudoaneurysms demonstrated a significant correlation with eventual prosthetic AV graft infection.


Subject(s)
Aneurysm, False/surgery , Arteriovenous Shunt, Surgical/adverse effects , Prosthesis-Related Infections/epidemiology , Renal Dialysis , Stents/adverse effects , Adult , Aged , Aged, 80 and over , Chi-Square Distribution , Female , Humans , Incidence , Male , Middle Aged , Prosthesis-Related Infections/therapy , Radiography, Interventional , Retrospective Studies , Risk Assessment , Risk Factors
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