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Zechuan L, Tianshi L, Tiantian L, Shoujin C, Hang Y, Ziping Y, Haitao G, Zeyang F, Yinghua Z, Jian W. The radiomics-clinical nomogram for predicting the response to initial superselective arterial embolization in renal angiomyolipoma, a preliminary study. Front Oncol 2024; 14:1334706. [PMID: 38505597 PMCID: PMC10949893 DOI: 10.3389/fonc.2024.1334706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 02/16/2024] [Indexed: 03/21/2024] Open
Abstract
Purpose The aim of this study was to explore a radiomics-clinical model for predicting the response to initial superselective arterial embolization (SAE) in renal angiomyolipoma (RAML). Materials and methods A total of 78 patients with RAML were retrospectively enrolled. Clinical data were recorded and evaluated. Radiomic features were extracted from preoperative contrast-enhanced CT (CECT). Least absolute shrinkage and selection operator (LASSO) and intra- and inter-class correlation coefficients (ICCs) were used in feature selection. Logistic regression analysis was performed to develop the radiomics, clinical, and combined models where the fivefold cross-validation method was used. The predictive performance and calibration were evaluated by the receiver operating characteristic (ROC) curve and calibration curve. Decision curve analysis (DCA) was used to measure clinical usefulness. Results The tumor shrinkage rate was 29.7% in total, and both fat and angiomyogenic components were significantly reduced. In the radiomics model, 12 significant features were selected. In the clinical model, maximum diameter (p = 0.001), angiomyogenic tissue ratio (p = 0.032), aneurysms (p = 0.048), and post-SAE time (p = 0.002) were significantly associated with greater volume reduction after SAE. Because of the severe linear dependence between radiomics signature and some clinical parameters, the combined model eventually included Rad-score, aneurysm, and post-SAE time. The radiomics-clinical model showed better discrimination (mean AUC = 0.83) than the radiomics model (mean AUC = 0.60) and the clinical model (mean AUC = 0.82). Calibration curve and DCA showed the goodness of fit and clinical usefulness of the radiomics-clinical model. Conclusions The radiomics-clinical model incorporating radiomics features and clinical parameters can potentially predict the positive response to initial SAE in RAML and provide support for clinical treatment decisions.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Zou Yinghua
- Department of Interventional and Vascular Surgery, Peking University First Hospital, Beijing, China
| | - Wang Jian
- Department of Interventional and Vascular Surgery, Peking University First Hospital, Beijing, China
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2
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Almazedi B, Stubbs C. Renal angiomyolipoma: from imaging to intervention. Clin Radiol 2024; 79:25-32. [PMID: 37925365 DOI: 10.1016/j.crad.2023.09.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 07/24/2023] [Accepted: 09/29/2023] [Indexed: 11/06/2023]
Abstract
A high volume of cross-sectional imaging has created a window of opportunity for radiologists to identify renal angiomyolipomas (AMLs). The purpose of this review is to help the reader recognise the spectrum of renal AML appearances using different imaging methods and to gain an understanding of the classic and atypical features for appropriate lesion characterisation. Risk factors for AML growth and rupture will be highlighted. An overview of the imaging features of acute AML rupture will be provided, principally relating to computed tomography (CT) assessment. A series of cases will be presented, including a case of peripartum renal AML rupture during Caesarean section leading to diagnostic dilemma. The indications for intervention and available treatment options will be considered: medical therapy, surgery, and interventional radiology (IR) techniques including their pros and cons. Emergency interventional radiology management with selective transarterial embolisation will be presented and analysed in relation to technique, angiographic appearances (pre and post embolisation) and associated complications.
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Affiliation(s)
- B Almazedi
- Department of Radiology, York Teaching Hospital, York and Scarborough Teaching Hospitals NHS Foundation Trust, York, UK.
| | - C Stubbs
- Department of Radiology, York Teaching Hospital, York and Scarborough Teaching Hospitals NHS Foundation Trust, York, UK
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Al-Kindi S, Al-Hajriy M, Al-Jabri A. Rupture of Renal Angiomyolipoma Post Fibrinolysis: A rare complication of fibrinolytic therapy. Sultan Qaboos Univ Med J 2023; 23:51-54. [PMID: 38161759 PMCID: PMC10754310 DOI: 10.18295/squmj.12.2023.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 01/18/2023] [Accepted: 02/08/2023] [Indexed: 01/03/2024] Open
Abstract
Angiomyolipoma is a common benign solid tumour that accounts for up to 3% of all renal tumours; most of the cases are sporadic. However, it can be part of other diseases. Angiomyolipomas are usually found incidentally through unrelated clinically indicated images but also, they can be diagnosed after complications have occurred. We report the case of retroperitoneal haemorrhage following the rupture of renal angiomyolipoma post-fibrinolysis, we are highlighting such a rare condition, the management options and the follow-up plan. The management of angiomyolipomas ranges from conservative treatment to surgical intervention depending on the patient's condition and the tumour's radiological features. Following-up on patients with angiomyolipomas depends on the symptoms and the tumour size. Till date, there is no reported cases of renal angiomyolipoma rupture post-fibrinolysis therapy as a treatment for myocardial infarction in non-percutaneous intervention capable facility.
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Affiliation(s)
| | | | - Adil Al-Jabri
- Cardiology, National Heart Centre, The Royal Hospital, Muscat, Oman
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Cali J, Chevallier O, Guillen K, Latournerie M, Mazit A, Aho-Glélé LS, Loffroy R. Selective Arterial Embolization of Ruptured Hepatocellular Carcinoma with N-Butyl Cyanoacrylate and Lipiodol: Safety, Efficacy, and Short-Term Outcomes. J Pers Med 2023; 13:1581. [PMID: 38003896 PMCID: PMC10672353 DOI: 10.3390/jpm13111581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 10/27/2023] [Accepted: 11/02/2023] [Indexed: 11/26/2023] Open
Abstract
The rupture of hepatocellular carcinoma (rHCC) is uncommon but causes sudden life-threatening bleeding. Selective transarterial embolization (STAE) is an effective bleeding-control option. The optimal embolic agent is unknown, and data on the use of cyanoacrylate glue are lacking. The objective of this study was to report the outcomes of cyanoacrylate-lipiodol embolization for rHCC. We retrospectively reviewed the files of the 16 patients (14 males; mean age, 72 years) who underwent emergency cyanoacrylate-lipiodol STAE at a single center in 2012-2023 for spontaneous rHCC. All 16 patients had subcapsular HCC and abundant hemoperitoneum. The technical success rate was 94% (15/16). Day 30 mortality was 19%; the three patients who died had severe hemodynamic instability at admission; one death was due to rebleeding. Liver enzyme levels returned to baseline by day 30. No rebleeding was recorded during the median follow-up of 454 days in the 10 patients who were alive with available data after day 30. Larger prospective studies with the collection of longer-term outcomes are needed to assess our results supporting the safety and effectiveness of cyanoacrylate-lipiodol STAE for rHCC. Randomized trials comparing this mixture to other embolic agents should be performed.
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Affiliation(s)
- Jory Cali
- Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21000 Dijon, France; (J.C.); (O.C.); (A.M.)
| | - Olivier Chevallier
- Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21000 Dijon, France; (J.C.); (O.C.); (A.M.)
- ICMUB Laboratory, UMR CNRS 6302, University of Burgundy, 9 Avenue Alain Savary, 21000 Dijon, France
| | - Kévin Guillen
- Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21000 Dijon, France; (J.C.); (O.C.); (A.M.)
- ICMUB Laboratory, UMR CNRS 6302, University of Burgundy, 9 Avenue Alain Savary, 21000 Dijon, France
| | - Marianne Latournerie
- Department of Gastroenterology and Hepatology, Francois-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21000 Dijon, France;
| | - Amin Mazit
- Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21000 Dijon, France; (J.C.); (O.C.); (A.M.)
| | - Ludwig Serge Aho-Glélé
- Department of Epidemiology, Statistics and Clinical Research, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21000 Dijon, France;
| | - Romaric Loffroy
- Department of Vascular and Interventional Radiology, François-Mitterrand University Hospital, 14 Rue Paul Gaffarel, BP 77908, 21000 Dijon, France; (J.C.); (O.C.); (A.M.)
- ICMUB Laboratory, UMR CNRS 6302, University of Burgundy, 9 Avenue Alain Savary, 21000 Dijon, France
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Sokooshi H, Zhang X, Kuwatsuru Y, Okada S, Kato H, Kuwatsuru R. Serum lactate dehydrogenase concentration after transcatheter renal artery embolization correlates with reduction in renal angiomyolipoma volume. Acta Radiol 2023; 64:2479-2484. [PMID: 37246404 DOI: 10.1177/02841851231177391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND The extent of renal angiomyolipoma (AML) volume reduction after renal transcatheter arterial embolization (TAE) varies between patients, with no predictive measure available. PURPOSE To determine whether the serum lactate dehydrogenase (LDH) concentration shortly after TAE correlates with the extent of tumor shrinkage. MATERIAL AND METHODS In a cohort of 36 patients undergoing prophylactic renal TAE for unruptured renal AML, we retrospectively acquired data from patient medical records, including serum LDH before and within 7 days after TAE and the tumor volume before and 12-36 months after TAE. The relationship between the serum level of LDH and reduction in tumor volume was evaluated using Spearman correlation analysis. RESULTS The median LDH concentration was significantly higher after TAE than before (909.0 U/L vs. 186.5 U/L). This early post-TAE serum LDH level and LDH index (post-TAE LDH / pre-TAE LDH) correlated significantly and positively with the absolute decrease in tumor volume (both P < 0.0001). We observed no significant correlation between the relative tumor volume reduction and serum LDH level or LDH index. CONCLUSION Serum LDH elevation occurs shortly after TAE and correlates with the extent of absolute decrease in AML volume at 12-36 months after TAE. Further large-scale studies are warranted to confirm the predictive role of post-TAE serum LDH level and LDH index in tumor shrinkage in patients with unruptured renal AML.
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Affiliation(s)
- Hideaki Sokooshi
- Department of Radiology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Xixi Zhang
- Department of Radiology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Yoshiki Kuwatsuru
- Department of Radiology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Shingo Okada
- Department of Radiology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Hitomi Kato
- Department of Radiology, School of Medicine, Juntendo University, Tokyo, Japan
| | - Ryohei Kuwatsuru
- Department of Radiology, Graduate School of Medicine, Juntendo University, Tokyo, Japan
- Department of Radiology, School of Medicine, Juntendo University, Tokyo, Japan
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Rolland R, Loubet A, Bommart S, Monnin-Bares V, Zarqane H, Vanoverschelde J, Herman F, Molinari N, Kovacsik H. Safety, Efficacy and Mid-Term Outcome for Transarterial Embolization (TAE) of Renal Angiomyolipoma (AML) Using Ethylene Vinyl Alcohol Copolymer Liquid Embolic Agent (EVOH). J Clin Med 2023; 12:jcm12103385. [PMID: 37240490 DOI: 10.3390/jcm12103385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/06/2023] [Accepted: 05/06/2023] [Indexed: 05/28/2023] Open
Abstract
Transarterial embolization (TAE) of renal angiomyolipoma (AML) is effective in treating and preventing hemorrhage. We report our experience using EVOH with a single-center retrospective study of all AML embolized with EVOH between June 2013 and March 2022 at the Montpellier University Hospital. A total of 29 embolizations were carried out in 24 consecutive patients (mean age: 53.86 years; 21 women and 3 men) with 25 AMLs for severe bleeding, symptomatic AML, tumor size > 4 cm, or presence of aneurysm(s) > 5 mm. Data collected included imaging and clinical outcomes, tuberous sclerosis complex status, change in AML volume, rebleeding, renal function, volume and concentration of EVOH used, and complications. Out of 29 embolizations performed for 25 AMLs, four were performed in an emergency. Technical success was achieved for 24/25 AMLs. Mean AML volume reduction was 53.59% after a mean follow-up time of 446 days using MRI or CT scan. Aneurysms on angiogram and the symptomatological nature of AML, as well as secondary TAE and multiple arterial pedicles, were statistically associated (p < 0.05). Two patients (8%) underwent nephrectomy after TAE. Four patients had a second embolization. Minor and major complication rates were 12% and 8%, respectively. Neither rebleeding nor renal function impairment was noticed. TAE of AML using EVOH is, thus, highly effective and safe.
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Affiliation(s)
- Rémi Rolland
- Department of Radiology, CHU of Montpellier, Arnaud de Villeneuve Hospital, 34090 Montpellier, France
| | - Antoine Loubet
- Department of Radiology, CHU of Montpellier, Arnaud de Villeneuve Hospital, 34090 Montpellier, France
| | - Sébastien Bommart
- Department of Radiology, CHU of Montpellier, Arnaud de Villeneuve Hospital, 34090 Montpellier, France
| | - Valérie Monnin-Bares
- Department of Radiology, CHU of Montpellier, Arnaud de Villeneuve Hospital, 34090 Montpellier, France
| | - Hamid Zarqane
- Department of Radiology, CHU of Montpellier, Arnaud de Villeneuve Hospital, 34090 Montpellier, France
| | - Juliette Vanoverschelde
- Department of Radiology, CHU of Montpellier, Arnaud de Villeneuve Hospital, 34090 Montpellier, France
| | - Fanchon Herman
- Department of Medical Statistics and Epidemiology, Centre Hospitalier Universitaire Montpellier, University of Montpellier, 34090 Montpellier, France
| | - Nicolas Molinari
- Department of Medical Statistics and Epidemiology, Centre Hospitalier Universitaire Montpellier, University of Montpellier, 34090 Montpellier, France
| | - Hélène Kovacsik
- Department of Radiology, CHU of Montpellier, Arnaud de Villeneuve Hospital, 34090 Montpellier, France
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Combes A, McQueen S, Palma CA, Benz D, Leslie S, Sved P, Boulas J, Vasilaras A, Rogan C, Drivas I, Eisinger DR, Waugh R. Is Size All That Matters? New Predictors of Complications and Bleeding in Renal Angiomyolipoma. Res Rep Urol 2023; 15:113-121. [PMID: 36968628 PMCID: PMC10038158 DOI: 10.2147/rru.s400730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 03/04/2023] [Indexed: 03/22/2023] Open
Abstract
Purpose Renal angiomyolipoma (AML) is the most common benign renal tumor. Whilst generally asymptomatic, they can cause life-threatening bleeding. Selective angioembolization (SAE) may be used to treat large symptomatic and asymptomatic AMLs. We aimed to evaluate the efficacy of SAE for symptomatic and asymptomatic renal AMLs and determine characteristics that predict spontaneous bleeding. Patients and Methods Data were retrospectively collected from a prospectively maintained database from July 2011 to April 2022. Patients were included if AML was >4cm and they underwent subsequent SAE. Follow-up imaging was analyzed to calculate mean reduction in AML size. Clinical notes were reviewed to analyze lesion characteristics including vascularity, fat content and presence of aneurysm as well as post-procedural complications. Results 26 patients with 30 AMLs were identified. Interval of follow-up imaging ranged from 1 to 60 months. 25 AMLs were embolized electively with 5 emergency embolizations performed for bleeding. Mean reduction in AML volume was 41% at 3 months (p=0.013) and 63% at 12 months (p=0.007). All 5 bleeding AMLs had a rich vascularity with 60% also having either aneurysms or a low fat content. Complications included post-embolic syndrome (n=9), segmental renal parenchyma devascularization (n=3), acute bleeding requiring re-embolization (n=2), nephrectomy for ongoing bleeding (n=1) and delayed bleeding managed conservatively (n=1). No deterioration in renal function was observed. Conclusion SAE is an effective procedure for managing symptomatic and asymptomatic renal AML, with minimal significant complications. AML vascularity, fat content and aneurysms may be useful characteristics to assess future risk of bleeding in patients with renal AML.
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Affiliation(s)
- Alexander Combes
- Department of Urology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
- Correspondence: Alexander Combes, Department of Urology, Royal Prince Alfred Hospital, 50 Missenden Road, Camperdown, NSW, 2050, Australia, Tel +612 9515 7773, Fax +612 9515 7774, Email
| | - Simon McQueen
- Department of Radiology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
| | | | - David Benz
- Department of Radiology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
| | - Scott Leslie
- Department of Urology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
- RPA Institute of Academic Surgery, Sydney, NSW, Australia
- Faculty of Medicine, University of Sydney, Sydney, NSW, Australia
- Department of Urology, Chris O’Brien Lifehouse, Sydney, NSW, Australia
| | - Paul Sved
- Department of Urology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
- Department of Urology, Chris O’Brien Lifehouse, Sydney, NSW, Australia
| | - John Boulas
- Department of Urology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
- Department of Urology, Chris O’Brien Lifehouse, Sydney, NSW, Australia
| | - Arthur Vasilaras
- Department of Urology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
- Department of Urology, Chris O’Brien Lifehouse, Sydney, NSW, Australia
| | - Chris Rogan
- Department of Radiology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
- Department of Urology, Chris O’Brien Lifehouse, Sydney, NSW, Australia
| | - Ilias Drivas
- Department of Radiology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
| | - David Robert Eisinger
- Department of Urology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
| | - Richard Waugh
- Department of Radiology, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
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Venturini M, Piacentino F, Coppola A, Fontana F. Editorial of Special Issue “Embolization Techniques: State of the Art and Future Perspectives”. J Clin Med 2022; 11:jcm11175109. [PMID: 36079041 PMCID: PMC9456612 DOI: 10.3390/jcm11175109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 08/19/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Massimo Venturini
- Diagnostic and Interventional Radiology Department, Circolo Hospital, ASST Sette Laghi, 21100 Varese, Italy
- Department of Medicine and Surgery, Insubria University, 21100 Varese, Italy
- Correspondence: ; Tel.: +39-0332-393607
| | - Filippo Piacentino
- Diagnostic and Interventional Radiology Department, Circolo Hospital, ASST Sette Laghi, 21100 Varese, Italy
| | - Andrea Coppola
- Diagnostic and Interventional Radiology Department, Circolo Hospital, ASST Sette Laghi, 21100 Varese, Italy
| | - Federico Fontana
- Diagnostic and Interventional Radiology Department, Circolo Hospital, ASST Sette Laghi, 21100 Varese, Italy
- Department of Medicine and Surgery, Insubria University, 21100 Varese, Italy
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