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Yu J, Yu XL, Cheng ZG, Hu B, Han ZY, Liu FY, Hu ZQ, Wang H, Dong J, Pan J, Yang B, Sai X, Guo AT, Liang P. Percutaneous microwave ablation of renal cell carcinoma: practice guidelines of the ultrasound committee of Chinese medical association, interventional oncology committee of Chinese research hospital association. Int J Hyperthermia 2021; 37:827-835. [PMID: 32635839 DOI: 10.1080/02656736.2020.1779356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Imaging-guided percutaneous microwave ablation (MWA) with high thermal efficiency comprises rapid, successful management of small renal cell carcinomas (RCCs) in selected patients. Ultrasound Committee of Chinese Medical Association, Interventional Oncology Committee of Chinese Research Hospital Association developed evidence-based guidelines for MWA of RCCs after systematically reviewing the 1969-2019 literature. Systematic reviews, meta-analyses, randomized controlled trials, cohort, and case-control studies reporting MWA of RCCs were included and levels of evidence assessed. Altogether, 146 articles were identified, of which 35 reported percutaneous MWA for T1a RCCs and 5 articles for T1b RCCs. Guidelines were established based on indications, techniques, safety, and effectiveness of MWA for RCCs, with the goal of standardizing imaging-guided percutaneous MWA treatment of RCCs. Key points Microwave ablation is recommended for managing small renal cell carcinoma in selected patients. Imaging protocols are tailored based on the procedural plan, guidance, and evaluation. Patient's selection evaluation, updated technique information, clinical efficacy, and complications are recommended to standardize management. A joint task force (multidisciplinary team) summarized the key elements of the standardized report.
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Affiliation(s)
- Jie Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, China.,State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, Beijing, China.,Ultrasound Committee of Chinese Medical Association, Beijing, China.,Interventional Oncology Committee of Chinese Research Hospital Association, Beijing, China
| | - Xiao-Ling Yu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, China.,Ultrasound Committee of Chinese Medical Association, Beijing, China.,Interventional Oncology Committee of Chinese Research Hospital Association, Beijing, China
| | - Zhi-Gang Cheng
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, China.,Ultrasound Committee of Chinese Medical Association, Beijing, China.,Interventional Oncology Committee of Chinese Research Hospital Association, Beijing, China
| | - Bing Hu
- Ultrasound Committee of Chinese Medical Association, Beijing, China.,Interventional Oncology Committee of Chinese Research Hospital Association, Beijing, China.,Department of Ultrasound in Med, 6th People's Hospital of Shanghai Jiaotong, University, Shanghai, China
| | - Zhi-Yu Han
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, China.,Ultrasound Committee of Chinese Medical Association, Beijing, China.,Interventional Oncology Committee of Chinese Research Hospital Association, Beijing, China
| | - Fang-Yi Liu
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, China.,Ultrasound Committee of Chinese Medical Association, Beijing, China.,Interventional Oncology Committee of Chinese Research Hospital Association, Beijing, China
| | - Zhi-Quan Hu
- Department of Ultrasound, Medical Imaging Union Hospital of Tongji Medical College of HUST Wuhan, China
| | - Hui Wang
- Ultrasound Committee of Chinese Medical Association, Beijing, China.,Interventional Oncology Committee of Chinese Research Hospital Association, Beijing, China.,Department of Ultrasound, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Jun Dong
- Department of Urology, Chinese PLA General Hospital, Beijing, China
| | - Jie Pan
- Interventional Oncology Committee of Chinese Research Hospital Association, Beijing, China.,Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Bo Yang
- Department of Oncology, Chinese PLA General Hospital, Beijing, China
| | - Xiaoyong Sai
- Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Geriatric Diseases, Institute of Geriatrics, Beijing, China
| | - Ai-Tao Guo
- Department of Pathology, Chinese PLA General Hospital, Beijing, China
| | - Ping Liang
- Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, China.,State Key Laboratory of Kidney Disease, The Chinese PLA General Hospital, Beijing, China.,Ultrasound Committee of Chinese Medical Association, Beijing, China.,Interventional Oncology Committee of Chinese Research Hospital Association, Beijing, China
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Traverson M, Lin S, Kendall A, Vaden S, Schafer KA, Seiler GS. Investigation of the use of microwave ablation with and without cooling urethral perfusion for thermal ablation of the prostate gland in canine cadavers. Am J Vet Res 2021; 82:395-404. [PMID: 33904800 DOI: 10.2460/ajvr.82.5.395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To investigate the use of microwave ablation (MWA) with cooling urethral perfusion and with no perfusion (MWA-UP and MWA-NP, respectively) for prostate gland ablation in canine cadavers. ANIMALS Cadavers of 18 sexually intact male dogs. PROCEDURES After technique refinement in 2 cadavers, laparotomy with ultrasound-guided MWA-UP (n = 8) or MWA-NP (8) of the prostate gland was performed in 16 cadavers. Normograde cystourethroscopy was performed before and after treatment; recorded images were reviewed in a blinded manner for scoring of urethral mucosal discoloration and loss of integrity. Difficulty with cystoscope insertion was recorded if present. Excised prostate glands were fixed for serial sectioning, gross measurements, and calculation of percentage ablation. Percentages of prostate tissue necrosis from MWA, denuded urethral mucosa, and depth of epithelial surface loss in an adjacent section of the colon were estimated histologically. Variables of interest were statistically analyzed. RESULTS Difficulty with cystoscope insertion after treatment was significantly more common and scores for urethral mucosal discoloration and loss of integrity were significantly higher (indicating more severe lesions) for the MWA-NP group than for the MWA-UP group. The histologically assessed percentage of denuded urethral mucosa was also greater for the MWA-NP group. Overall median percentage prostate gland ablation was 73%; this result was not associated with prostate gland volume or chronological order of treatment. CONCLUSIONS AND CLINICAL RELEVANCE MWA-UP induced subtotal thermal necrosis of prostate glands in canine cadavers while limiting urethral mucosal injury. Further study is required to optimize the technique and evaluate its safety and efficacy in vivo as a future curative-intent treatment for prostatic tumors in dogs.
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Vedel PF, Borgbjerg J, Nielsen TK. Gangrene of the Kidney Following Percutaneous Renal Cryoablation of a Small Tumor. J Endourol Case Rep 2020; 6:490-492. [PMID: 33457710 DOI: 10.1089/cren.2020.0139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: In selected cases cryoablation is a valid treatment option for small renal masses. The procedure is generally considered oncologically efficient with a low rate of severe complications. We report here a case of a 62-year-old man who after percutaneous cryoablation develops severe gangrene in the treated kidney. Case Presentation: A 62-year-old man was incidentally diagnosed with a 45-mm renal cell carcinoma. The tumor was found on a CT scan performed on the suspicion of diverticulitis. An abscess in relation to the sigmoid was found and he was treated with aspiration and antibiotics. The tumor was treated with percutaneous cryoablation 20 days later. On the third postoperative day, he was readmitted with urosepsis. A CT scan revealed gangrene at the ablation site, and a nephrectomy was performed. Clinical progress was slow, and a new CT scan showed reformation of the abscess at the sigmoid and a suspicion of a colonic tumor was raised. This was confirmed by coloscopy and biopsy. The patient had a right hemicolectomy, and the pathology report described a T4 adenocarcinoma with positive margins. After 4 months follow-up, metastases to the lungs was found and the patient was referred to further oncologic treatment. Conclusion: Renal cryoablation is generally a very safe procedure, but severe complications may occur. This case report highlights that attention should be given to recent abdominal infections and that delayed intervention might be in place in selected cases.
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Affiliation(s)
| | - Jens Borgbjerg
- Radiology Department, Aarhus University Hospital, Aarhus N, Denmark
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