scholarly journals Transcatheter arterial embolization for unruptured renal angiomyolipoma using a 1.8-Fr tip microballoon catheter with a mixture of ethanol and Lipiodol

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Kosuke Tomita ◽  
Tomohiro Matsumoto ◽  
Shunsuke Kamei ◽  
Shota Yamamoto ◽  
Satoshi Suda ◽  
...  
Keyword(s):  
Success Rate ◽  
Transcatheter Arterial Embolization ◽  
Clinical Success ◽  
Clinical Success Rate ◽  
Arterial Embolization ◽  
Renal Angiomyolipoma ◽  
Technical Success ◽  
Technical Success Rate ◽  
Median Volume ◽  
Estimated Glomerular Filtration Rates

Abstract Background To evaluate the efficacy and safety of transcatheter arterial embolization for renal angiomyolipoma using a 1.8-French tip microballoon catheter and a mixture of ethanol and Lipiodol. Methods Seven consecutive patients with total of eight angiomyolipomas underwent this procedure between June 2014 and June 2017. A 1.8-French tip microballoon catheter was advanced to the feeding artery of the angiomyolipoma, and transcatheter arterial embolization was performed with a mixture of ethanol and Lipiodol under microballoon inflation. We retrospectively evaluated the characteristics of angiomyolipomas, technical success rate, clinical success rate, renal function, and adverse events. Technical success and clinical success were defined as complete embolization of all feeding arteries and reduction of tumor size, respectively. Results The median size of the angiomyolipomas was 46 mm (range, 40–64 mm). Transcatheter arterial embolization was successful in all eight angiomyolipomas. The median volume of the mixture of ethanol and Lipiodol was 6.0 ml (range, 2.0–14 ml). The median ratio of ethanol to Lipiodol was 71% (range, 71–75%). All eight angiomyolipomas shrank with a median shrinkage rate of 34% in diameter (range, 9–63%) and 77% in volume (range, 48–94%). The median follow-up period was 13 months (range, 9–54 months). Clinical success was achieved in all cases. Serum creatinine concentrations and the pre- and post-procedural estimated glomerular filtration rates did not change notably, and there were no major complications. Conclusion Transcatheter arterial embolization for renal angiomyolipoma using a 1.8-French tip microballoon catheter with a mixture of ethanol and Lipiodol is effective and safe.

scholarly journals Use of microspheres in embolization for unruptured renal angiomyolipomas

Open Medicine ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. 655-659
Author(s):  
Masashi Shimohira ◽  
Keiichi Nagai ◽  
Kengo Ohta ◽  
Yusuke Sawada ◽  
Taku Naiki ◽  
...  
Keyword(s):  
Success Rate ◽  
Complication Rate ◽  
Clinical Success ◽  
Clinical Success Rate ◽  
Arterial Embolization ◽  
Major Complication ◽  
Shrinkage Rate ◽  
Technical Success ◽  
Technical Success Rate ◽  
Major Complication Rate

Abstract Purpose To describe our initial experience with use of microspheres in transcatheter arterial embolization (TAE) for unruptured sporadic renal angiomyolipomas (AMLs). Materials and methods Seven consecutive patients with seven unruptured sporadic renal AMLs, 6 females and 1 male, with a median age of 45 years (range, 30–69 years), underwent TAE using microspheres between November 2016 and February 2020. We evaluated the technical success rate, complications related to the procedure, clinical success rate, and the shrinkage rate of renal AML. Technical success was defined as the completion of TAE. Clinical success was defined as presence of shrinkage of the renal AML after TAE. Results In all patients, TAE using microspheres was accomplished and technical success rate was 100% (7/7). Three patients exhibited slight pain, but it improved with only observation, and the minor complication rate was 43% (3/7) and major complication rate was 0% (0/7). After the TAE, shrinkage of renal AML was confirmed in 6 of 7 patients, and clinical success rate was 86% (6/7). The median of shrinkage rate was 47% (range, 26–83%) with a median follow-up period of 19 months (range, 4–30 months). Conclusion TAE using microspheres appears to be effective and safe for unruptured sporadic renal AMLs.

scholarly journals Selective Arterial Embolization of Renal Angiomyolipoma: Efficacy, Tumor Volume Reduction and Complications

2021 ◽  
Vol 73 (5) ◽  
Author(s):  
Walailak Chaiyasoot ◽  
Jirawadee Yodying ◽  
Thanita Limsiri
Keyword(s):  
Success Rate ◽  
Clinical Success ◽  
Three Dimensional ◽  
Clinical Success Rate ◽  
Arterial Embolization ◽  
P Value ◽  
Renal Angiomyolipoma ◽  
Tumor Rupture ◽  
Selective Arterial Embolization ◽  
Density Histogram

Objective: To evaluate the efficacy and complications of selective arterial embolization in renal angiomyolipoma and to identify predictive factors for tumor rupture.Materials and Methods: Overall, 21 patients with 25 renal angiomyolipoma (AML) underwent selective arterial embolization (SAE) between January 2008 and June 2019, comprising 15 cases involving prophylaxis embolization of a tumor >4 cm diameter and 10 involving embolization for a ruptured tumor. Multidetector computed tomography (MDCT) was performed pre- and post-SAE, using the 2D tumor diameter in the ruptured AMLs. Three-dimensional volumetry and density histogram were performed for determining the total tumor volume, fat, and angiomyogenic component reduction in the unruptured AMLs. The predictive factors for tumor rupture, the treatment outcome and complications were analyzed. Results: The clinical success rate was 84% (21/25 cases) and the technical success rate was 96% (24/25 cases). The 3D volume post-SAE within 1-3 months showed a greater decrement of the enhanced angiomyogenic component than the fat component, with median percentages of -62.2% and -18.4%, respectively (p-value = 0.333). Minor complications were post-embolization syndrome (5 case, 20%) and minimal renal infarction (4 cases, 16%). Renal abscesses were the major complications (3 cases, 12%). A factor associated with tumor rupture was the presence of an intra-tumoral aneurysm (p-value < 0.05).Conclusion: SAE is an effective treatment for renal AML with a high technical and clinical success rate and limited complications. Three-dimensional volume measurement and density histogram analysis might be better tools than two-dimensional CT to evaluate post-SAE response, which is crucial for management planning.

scholarly journals Long-Term Management of Recurrent Cholecystitis after Initial Conservative Treatment: Endoscopic Transpapillary Gallbladder Stenting

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Hideki Kamada ◽  
Hideki Kobara ◽  
Naohito Uchida ◽  
Kiyohito Kato ◽  
Takayuki Fujimori ◽  
...  
Keyword(s):  
High Risk ◽  
Acute Cholecystitis ◽  
Success Rate ◽  
Clinical Success ◽  
Clinical Success Rate ◽  
Technical Success ◽  
Technical Success Rate ◽  
High Risk Patients ◽  
Risk Patients

Background. Endoscopic transpapillary gallbladder stenting (ETGBS) is an effective procedure for treating high-risk patients with acute cholecystitis and severe comorbidities. However, the efficacy of ETGBS for recurrent cholecystitis (RC) remains unclear. This study aimed to explore its efficacy in patients with RC for whom cholecystectomy is contraindicated because of its high surgical risk.Methods. Data on 19 high-risk patients who had undergone ETGBS for RC after initial conservative therapy in our institution between June 2006 and May 2012 were retrospectively examined. The primary outcome was the clinical success rate, which was defined as no recurrences of acute cholecystitis after ETGBS until death or the end of the follow-up period. Secondary outcomes were technical success rate and adverse events (AEs).Results. The clinical success rate of ETGBS was 100%, the technical success rate 94.7%, and AE rate 5%: one patient developed procedure-related mild acute pancreatitis. The clinical courses of all patients were as follows: four died of nonbiliary disease, and the remaining 15 were subsequently treated conservatively. The median duration of follow-up was 14.95 months (range 3–42 months).Conclusions. ETGBS is an effective alternative for managing RC in high-risk patients with severe comorbidities.

scholarly journals Superselective Renal Artery Embolization Management of Post-percutaneous Nephrolithotomy Hemorrhage and Its Methods

2020 ◽  
Vol 7 ◽  
Author(s):  
Xiangjun Dong ◽  
Yanqiao Ren ◽  
Ping Han ◽  
Lei Chen ◽  
Tao Sun ◽  
...  
Keyword(s):  
Serum Creatinine ◽  
Success Rate ◽  
Clinical Data ◽  
Clinical Success ◽  
Clinical Success Rate ◽  
Arterial Embolization ◽  
Interventional Therapy ◽  
Technical Success Rate ◽  
Renal Hemorrhage ◽  
Significant Difference

Objective: The purpose of this study was to evaluate the therapeutic efficacy and safety of superselective renal arterial embolization (SRAE) in the treatment of patients with renal hemorrhage after percutaneous nephroscopy (PCNL). In addition, embolization techniques and embolization materials during operation were also worthy of further discussion.Methods: From February 2015 to December 2019, clinical data of 49 consecutive patients with renal hemorrhage after PCNL were retrospectively analyzed. Demographic and clinical data of patients were recorded, changes in serum creatinine values were analyzed, and the safety and efficacy of TAE were evaluated. Clinical experience was also recorded.Results: A total of 49 patients underwent angiography, of which 46 patients received SRAE due to positive hemorrhagic foci detected by angiography, and the technical success rate of 46 patients was 100%. Among the three patients who did not receive embolization, one patient underwent nephrectomy, and two patients improved with conservative treatment, with a clinical success rate of 98%. There was no statistically significant difference between serum creatinine before PCNL and 7 days after SRAE (101.6 ± 36.5 to 100.5 ± 27.1 μmol/L; P = 0.634), and no significant change was observed in serum creatinine at the last follow-up (99.4 ± 34 μmol/L, P = 0.076). No major complications occurred after embolization.Conclusions: SRAE is safe and effective in patients with renal hemorrhage after PCNL. The experience of interventional therapy and the choice of embolization materials in this study may provide certain benefits for the treatment of patients with renal hemorrhage after PCNL.

Outcome after percutaneous transluminal angioplasty of arterial stenosis in renal transplant patients

2009 ◽  
Vol 50 (3) ◽  
pp. 270-275 ◽  
Author(s):  
G. Hagen ◽  
J. Wadström ◽  
M. Magnusson ◽  
A. Magnusson
Keyword(s):  
Renal Transplant ◽  
Success Rate ◽  
Clinical Success ◽  
Clinical Success Rate ◽  
Transluminal Angioplasty ◽  
Technical Success ◽  
Technical Success Rate ◽  
Transplant Patients ◽  
Renal Transplant Patients ◽  
Percutaneous Transluminal

Background: Ensuring graft survival in renal transplant patients is of paramount importance. Early detection and treatment of complications such as transplant renal artery stenosis (TRAS) are essential. Purpose: To evaluate the technical and clinical success rate of renal transplant patients with stenosis in the transplant renal artery or in the iliac artery after percutaneous transluminal angioplasty (PTA). Material and Methods: PTA was carried out on 24 patients with TRAS or iliac artery stenosis. Altogether, 28 stenoses were treated with PTA. The immediate technical result and the clinical outcomes after 1 and 3 months were assessed as well as clinical adverse events. A reduction in serum creatinine and/or a reduction in the number of antihypertensive drugs were criteria for clinical success. Results: The immediate technical success rate after PTA was 93%. The clinical success rate after 1 month was 58%, increasing to 75% after 3 months. Conclusion: The technical success rate is not equivalent to the clinical success rate when treating TRAS with PTA. Furthermore, there is a delay in clinical response, sometimes of 3 months, after a technically successful PTA.

Safety of Transcatheter Arterial Embolization for Visceral Artery Pseudoaneurysms: Incidence of Intraprocedural Rupture

2021 ◽  
Vol 55 (4) ◽  
pp. 361-366
Author(s):  
Masashi Shimohira ◽  
Keiichi Nagai ◽  
Kengo Ohta ◽  
Yusuke Sawada ◽  
Keita Nakayama ◽  
...  
Keyword(s):  
Success Rate ◽  
Transcatheter Arterial Embolization ◽  
Arterial Embolization ◽  
Major Complication ◽  
Visceral Artery ◽  
Technical Success ◽  
Advanced Level ◽  
Technical Success Rate ◽  
A Minor

Introduction: Transcatheter arterial embolization is the first-line treatment for visceral artery pseudoaneurysms (VAPAs); however, the intraprocedural rupture of pseudoaneurysms is an important complication. The present study was performed to evaluate the safety of embolization for VAPAs, including the incidence of intraprocedural rupture. Methods: Among 56 consecutive patients with 57 VAPAs who underwent treatment between April 2009 and October 2020, 46 patients with 47 VAPAs underwent embolization. Complications related to embolization including intraprocedural rupture, the technical success rate, and clinical outcomes were evaluated. Complications that required extended hospitalization, an advanced level of care, or resulted in permanent adverse sequelae or death were classified as major complications, while the remainder were considered to be minor. Technical success was defined as the completion of embolization. Results: The intraprocedural rupture of pseudoaneurysms occurred in 3 out of 47 VAPAs treated with embolization (6%) and resulted in minor complications. One liver abscess requiring drainage was regarded as a major complication (2%). Focal infarction after embolization was observed as a minor complication in 20 cases. Complications occurred in 24 out of 47 cases (51%), comprising one major complication (2%) and 23 minor complications (48%). The technical success rate was 100% (47/47). Fifty-three out of 56 patients (95%) were alive in a median follow-up period of 18 months (range: 2 days-137 months). Conclusions: Embolization is safe and useful for the treatment of VAPAs; however, the intraprocedural rupture of pseudoaneurysms may occur, and, thus, care is needed during this procedure.

scholarly journals Urgent Transcatheter Arterial Embolization for Wunderlich Syndrome With Hypovolemic Shock Secondary to Ruptured Renal Angiomyolipoma

2021 ◽  
Vol 8 ◽  
Author(s):  
Maofeng Gong ◽  
Zhengli Liu ◽  
Haobo Su ◽  
Boxiang Zhao ◽  
Jie Kong ◽  
...  
Keyword(s):  
Transcatheter Arterial Embolization ◽  
Clinical Success ◽  
Hypovolemic Shock ◽  
Arterial Embolization ◽  
Renal Angiomyolipoma ◽  
Technical Success ◽  
Embolic Agents ◽  
Nontarget Embolization ◽  
Glubran 2 ◽  
Embolic Materials

Purpose: Wunderlich syndrome (WS) with hypovolemic shock secondary to ruptured renal angiomyolipoma (rAML) represents an urgent condition. Hence, we reported our experience with transcatheter arterial embolization (TAE) using different embolic materials under this condition.Methods: This retrospective study consisted of 22 patients. Embolic materials including particles, microcoils, and liquid embolic agents were selectively used based on the decisions of interventional radiologists. Technical success was defined as the complete occlusion of bleeding vessels on the final renal angiogram. Clinical success was defined as the absence of re-hemorrhage needed for repeat endovascular or surgery treatment after TAE.Results: The articulated materials were used when WS presented without aneurysms; a combination of particulate materials and microcoils or Glubran 2 alone were used for WS with aneurysms. The technical success based on 24 episodes of TAEs in 22 patients was 100% (24 of 24). Repeat TAE was achieved in two patients with hemorrhages re-occurring two days after the initial embolization with microcoils alone. The clinical success was 90.9% (20 of 22). No nontarget embolization or embolization-related complications occurred during the TAE procedure. Of the patients, 27.3% (6 of 22) experienced minor complications of post-embolization syndrome (PES). During a median follow-up time of 34 months, no recurrent hemorrhage that required repeat endovascular or surgical treatment for hemostasis occurred.Conclusion: Urgent TAE with the selective use of different embolic materials is an effective alternative to control WS with hypovolemic shock secondary to ruptured rAML. The condition of presenting with or without aneurysms may determine the embolic materials employed.

Fluoroscopically-Guided Manipulation of Malfunctioning Peritoneal Dialysis Catheters

1999 ◽  
Vol 19 (6) ◽  
pp. 544-549 ◽  
Author(s):  
Martin E. Simons ◽  
Gaylene Pron ◽  
Mario Voros ◽  
Leslie C. Vanderburgh ◽  
Panduranga S. Rao ◽  
...  
Keyword(s):  
Peritoneal Dialysis ◽  
Success Rate ◽  
Clinical Success ◽  
Clinical Success Rate ◽  
Primary Patency ◽  
Safe Procedure ◽  
Technical Success ◽  
Early Complications ◽  
Surgical Interventions ◽  
Technical Success Rate

Objective To review our experience with fluoroscopic evaluation and manipulation of malpositioned, malfunctioning, peritoneal dialysis (PD) catheters. Materials and Methods Thirty-one patients, over a 5-year period (1 May 1992 to 30 April 1997) with malfunctioning PD catheters, who had fluoroscopically-guided manipulation were reviewed. Catheters were manipulated using a malleable aluminum bar and, if necessary, guide wires or other stiffeners. Technical success was assessed on the basis of adequate, fluoroscopically verified, catheter placement at the time of the procedure and improved flows. A functional PD catheter at 30 days post manipulation was considered to be a clinically successful manipulation. Results There were 41 manipulations [33 initial (IM) and 8 remanipulations (RM)] for malpositioned or kinked catheters. In 31 (19 male, 12 female) patients ranging in age from 31 to 76 years (mean age 60 years), the initial technical success rate was 85% for IM ( n = 28/33) and 63% ( n = 5/8) for RM. The overall clinical success rate, or 30-day primary patency, was 55% for IM ( n = 18/33) and 63% for RM. Catheter function (combined IM and RM) continued for a median 869 days (95% CI: 118, 1620). No early complications were noted. Conclusions Fluoroscopic manipulation, including attempts at remanipulation, of PD catheters is a safe procedure. The technique is a simple, inexpensive, and effective way of prolonging PD catheter life, thereby reducing the number of surgical interventions.

Tract dilation to salvage failing buttonholes in arteriovenous dialysis fistulae

2018 ◽  
Vol 20 (3) ◽  
pp. 290-300
Author(s):  
Eyal Barzel ◽  
John W Larkin ◽  
Allen Marcus ◽  
Marta M Reviriego-Mendoza ◽  
Len A Usvyat ◽  
...  
Keyword(s):  
Arteriovenous Fistula ◽  
Success Rate ◽  
Clinical Success ◽  
Clinical Success Rate ◽  
Technical Success ◽  
Technical Success Rate ◽  
Sharp Recanalization ◽  
Tract Dilation ◽  
Lost To Follow Up

Introduction: Hemodialysis patients with an arteriovenous fistula can use buttonhole techniques for cannulation. Although buttonholes generally work well, patients may report difficult and painful cannulation, and buttonholes may fail over time. We aimed to assess the effectiveness of tract dilation in treatment of failing buttonholes. Methods: We retrospectively analyzed data from patients treated with buttonhole tract dilation at an outpatient vascular access center between January 2013 and August 2015. Results: Data from 23 patients were analyzed. There were 51 tract dilation procedures during 36 encounters for failing arteriovenous fistula buttonhole tract(s). The technical success rate for established tract dilation with “blunt-recanalization” was 90% (n = 46). The five remaining buttonholes had “sharp-recanalization” to create and dilate new tract through the buttonhole. For 46 buttonholes treated with “blunt-recanalization,” there was an 85% clinical success rate at one week (39 buttonholes), and one was lost to follow-up; there was a 70% clinical success rate after one month (32 buttonholes). In the five buttonholes with “sharp-recanalization,” there was only one clinical success with p < 0.05 for difference in success rate compared to “blunt-recanalization” at both one week and one month. There was one complication from “sharp-recanalization” requiring abandonment of the buttonhole tract. Discussion: Buttonhole tract dilation is a useful method to treat difficult cannulation and painful cannulation and has the potential to extend the life of failing buttonholes.

scholarly journals Percutaneous afferent lymphatic vessel sclerotherapy for postoperative lymphatic leakage after previous ineffective therapeutic transpedal lymphangiography

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
F. Pan ◽  
M. Loos ◽  
T. D. Do ◽  
G. M. Richter ◽  
H. U. Kauczor ◽  
...  
Keyword(s):  
Success Rate ◽  
Lymphatic Vessel ◽  
Clinical Success ◽  
Clinical Success Rate ◽  
Technical Success ◽  
Ct Guided ◽  
Technical Success Rate ◽  
Lymphatic Fistula ◽  
Leakage Site

Abstract Background To demonstrate the efficacy of percutaneous computed tomography (CT)-guided afferent lymphatic vessel sclerotherapy (ALVS) in the treatment of postoperative lymphatic leakage (LL) after ineffective therapeutic transpedal lymphangiography (TL). Methods A retrospective review in this institute involving 201 patients was conducted from May 2011 to September 2018. Patients diagnosed with postoperative LL undergoing ineffective therapeutical TL before the performance of percutaneous CT-guided ALVS were involved. Technical success and clinical success of TL and ALVS were established. The technical success and efficacy of ALVS in the treatment of postoperative LL after ineffective therapeutic TL were assessed. The clinical success rate of ALVS is also assessed, and the complications are reviewed. Results In total, nine patients were involved including three patients (33.3%) presented with chylothorax, three patients (33.3%) presented with inguinal lymphatic fistula/lymphocele, and three patients (33.3%) presented with lymphatic fistula in the thigh; 27 ± 18 days (mean ± standard deviation) after surgery, therapeutic TL was successfully performed and showed definite afferent lymphatic vessel and leakage site in all the patients. Due to clinical failure after TLs, the following ALVS was performed with a mean interval of 12 ± 8 days after TL. The technical success rate was 9/9 (100.0%, 95% confidence interval [CI] 63.1–100.0%). An average of 2.7 ± 1.3 mL 95% ethanol as sclerosant agent was injected during the procedure. The clinical success was observed in 8 of the 9 patients (88.9%, 95% CI 51.8–99.7%) with a time between ALVS and the LL cure of 8 ± 6 days. No complications were reported. Conclusions Our results showed the role of percutaneous CT-guided ALVS as a safe, feasible, and effective salvage treatment for postoperative LL after ineffective TL.

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