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Tsang SH, Ma KW, She WH, Chu F, Lau V, Lam SW, Cheung TT, Lo CM. High-intensity focused ultrasound ablation of liver tumors in difficult locations. Int J Hyperthermia 2021; 38:56-64. [PMID: 34420450 DOI: 10.1080/02656736.2021.1933217] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
High-intensity focused ultrasound (HIFU) has been shown to be a valuable tool in the management of small liver tumors such as hepatocellular carcinoma (HCC). It has been shown to be a safe and effective means to ablate small HCC even in the presence of advanced cirrhosis. This review examines the challenges faced during HIFU ablation when the target tumors are located in difficult locations such as the liver dome, close to the rib cage, near large blood vessels or the heart, or adjacent to hollow viscera; and the special maneuvers employed to tackle such lesions.
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Affiliation(s)
- Simon H Tsang
- Department of Surgery, The University of Hong Kong, Hong Kong, China
| | - Ka Wing Ma
- Department of Surgery, The University of Hong Kong, Hong Kong, China
| | - Wong Hoi She
- Department of Surgery, The University of Hong Kong, Hong Kong, China
| | - Ferdinand Chu
- Department of Radiology, Queen Mary Hospital, Hong Kong, China
| | - Vince Lau
- Department of Radiology, Queen Mary Hospital, Hong Kong, China
| | - Shuk Wan Lam
- Department of Anaesthesiology, The University of Hong Kong, Hong Kong, China
| | - Tan To Cheung
- Department of Surgery, The University of Hong Kong, Hong Kong, China
| | - Chung Mau Lo
- Department of Surgery, The University of Hong Kong, Hong Kong, China
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Seidensticker M, Schütte K, Seidensticker R, Mühlmann M, Schulz C. Multi-modal and sequential treatment of liver cancer and its impact on the gastrointestinal tract. Best Pract Res Clin Gastroenterol 2020; 48-49:101709. [PMID: 33317790 DOI: 10.1016/j.bpg.2020.101709] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/02/2020] [Accepted: 11/06/2020] [Indexed: 01/31/2023]
Abstract
Hepatic tumors include hepatocellular cancer (HCC) and cholangiocarcinoma (CC), a small subgroup of tumors (approx. 1%) are classified as combined hepatocellularcholangiocellular carcinomas. Different stage-dependent therapeutic approaches comprise resection, local ablative techniques, locoregional therapies, systemic treatment, liver transplantation in selected cases and possible combination of these treatment modalities. This review summarizes current knowledge on multi-modal treatment strategies for liver cancer focusing on gastrointestinal side effects.
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Affiliation(s)
- Max Seidensticker
- Klinik und Poliklinik für Radiologie, Klinikum der Universität München, Munich, Germany.
| | - Kerstin Schütte
- Department of Internal Medicine and Gastroenterology, Niels-Stensen-Kliniken, Marienhospital, Osnabrück, Germany
| | - Ricarda Seidensticker
- Klinik und Poliklinik für Radiologie, Klinikum der Universität München, Munich, Germany
| | - Marc Mühlmann
- Klinik und Poliklinik für Radiologie, Klinikum der Universität München, Munich, Germany
| | - Christian Schulz
- Medical Department II, University Hospital, LMU, Munich, Germany
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Chu KKW, Cheung TT. Update in management of hepatocellular carcinoma in Eastern population. World J Hepatol 2015; 7:1562-1571. [PMID: 26085915 PMCID: PMC4462694 DOI: 10.4254/wjh.v7.i11.1562] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 02/10/2015] [Accepted: 04/14/2015] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the commonest malignant tumours in the East. Although the management of HCC in the West is mainly based on the Barcelona Clinic for Liver Cancer staging, it is considered too conservative by Asian countries where the number of HCC patients is huge. Scientific and clinical advances were made in aspects of diagnosis, staging, and treatment of HCC. HCC is well known to be associated with cirrhosis and the treatment of HCC must take into account the presence and stage of chronic liver disease. The major treatment modalities of HCC include: (1) surgical resection; (2) liver transplantation; (3) local ablation therapy; (4) transarterial locoregional treatment; and (5) systemic treatment. Among these, resection, liver transplantation and ablation therapy for small HCC are considered as curative treatment. Portal vein embolisation and the associating liver partition with portal vein ligation for staged hepatectomy may reduce dropout in patients with marginally resectable disease but the midterm and long-term results are still to be confirmed. Patient selection for the best treatment modality is the key to success of treatment of HCC. The purpose of current review is to provide a description of the current advances in diagnosis, staging, pre-operative liver function assessment and treatment options for patients with HCC in the east.
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Teng F, Zhang YF, Wang YM, Yu J, Lang X, Tian WY, Jiang CX, Xue FX. Contrast-enhanced MRI in preoperative assessment of myometrial and cervical invasion, and lymph node metastasis: diagnostic value and error analysis in endometrial carcinoma. Acta Obstet Gynecol Scand 2015; 94:266-73. [PMID: 25545203 DOI: 10.1111/aogs.12570] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Accepted: 12/12/2014] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To determine the ability of contrast-enhanced magnetic resonance imaging to predict myometrial invasion, cervical invasion, and pelvic lymph node metastasis in endometrial carcinoma and to analyze factors that lead to errors in this identification. DESIGN A retrospective study. SETTING University general hospital. POPULATION A total of 167 women diagnosed with endometrial carcinoma. METHODS All patients received a preoperative contrast-enhanced magnetic resonance imaging scan. Histopathological findings were used as the definitive diagnosis. MAIN OUTCOME MEASURES The results were compared with histopathological findings, factors that make accurate assessment of myometrial invasion, cervical invasion, and pelvic lymph node metastasis difficult by contrast-enhanced magnetic resonance imaging were analyzed. RESULTS The sensitivity, specificity, diagnostic accuracy, positive predictive values, and negative predictive values of contrast-enhanced magnetic resonance imaging were 90.9, 91.8, 91.6, 73.2 and 97.6%, respectively, for identifying deep myometrial invasion; 84.2, 96.0, 94.6, 72.7 and 97.9%, respectively, for identifying cervical invasion; and 45.0, 91.2, 85.6, 40.9 and 92.4%, respectively, for identifying pelvic lymph node metastasis. The main causes of error in contrast-enhanced magnetic resonance imaging were myomas, cornual lesions, deep myometrial invasion, large tumor size, non-endometrioid tumor type, and lower tumor grade. CONCLUSION Contrast-enhanced magnetic resonance imaging has a high accuracy and a low tendency to produce false-negative predictive values. Gynecological oncologists should combine the imaging data and clinical information to make therapeutic decisions and avoid diagnostic errors.
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Affiliation(s)
- Fei Teng
- Department of Obstetrics and Gynecology, Tianjin Medical University General Hospital, Tianjin, China
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Cheung TT, Poon RTP, Jenkins CR, Chu FSK, Chok KSH, Chan ACY, Tsang SHY, Dai WC, Yau TCC, Chan SC, Fan ST, Lo CM. Survival analysis of high-intensity focused ultrasound therapy vs. transarterial chemoembolization for unresectable hepatocellular carcinomas. Liver Int 2014; 34:e136-43. [PMID: 24451026 DOI: 10.1111/liv.12474] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 01/16/2014] [Indexed: 01/01/2023]
Abstract
BACKGROUND & AIMS High-intensity focused ultrasound (HIFU) ablation is a non-invasive treatment for unresectable hepatocellular carcinomas (HCCs), but long-term survival analysis is lacking. This study was to analyse its outcome compared to that of transarterial chemoembolization (TACE). METHODS From October 2003 to September 2010, 113 patients received HIFU ablation as a treatment of HCCs at our hospital. Twenty-six patients had HCCs sized 3-8 cm. Fifty-two patients with matched tumour characteristics having TACE as primary treatment were selected for comparison. Short-term outcome and long-term survival were analysed. RESULTS In the HIFU group (n = 26), 46 tumours were ablated. The median age of the patients was 69 (49-84) years. The median tumour size was 4.2 (3-8) cm. In the TACE group (n = 52), the median age of the patients was 67 (44-84) years. The median tumour size was 4.8 (3-8) cm. There was no hospital mortality in any of the groups. In the HIFU group, the rates of complete tumour response, partial tumour response, stable disease and progressive disease were 50%, 7.7%, 25.6% and 7.7% respectively, according to the modified Response Evaluation Criteria in Solid Tumours. The TACE group had the corresponding rates at 0%, 21.2%, 63.5% and 15.4% respectively (P < 0.0001). The 1-year, 3-year and 5-year survival rates were 84.6%, 49.2% and 32.3% respectively, in the HIFU group and 69.2%, 29.8% and 2.3% respectively, in the TACE group (P = 0.001). CONCLUSION HIFU ablation is a safe and effective method for unresectable HCCs. A survival benefit is observed over sole TACE.
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Affiliation(s)
- Tan To Cheung
- Department of Surgery, The University of Hong Kong, 102 Pokfulam Road, Hong Kong, China
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Cheung TT, Poon RTP, Chok KSH, Chan ACY, Tsang SHY, Dai WC, Yau TCC, Chan SC, Fan ST, Lo CM. Management of spontaneously ruptured hepatocellular carcinomas in the radiofrequency ablation era. PLoS One 2014; 9:e94453. [PMID: 24718254 PMCID: PMC3981783 DOI: 10.1371/journal.pone.0094453] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 03/17/2014] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND AND AIM Spontaneous rupture of hepatocellular carcinoma (HCC) carries a high mortality. The use of radiofrequency ablation (RFA) in recent years has enriched the armamentarium for hemostasis of spontaneously ruptured HCCs but its results have not been documented. This study investigated the prognosis and outcome of spontaneous rupture of HCC as well as the results of using RFA for hemostasis. PATIENTS AND METHOD From January 1991 to December 2010, 5283 patients were diagnosed with HCC at our hospital, and 189 of them had spontaneous rupture of HCCs. They were grouped under two periods: period 1, 1991-2000, n = 70; period 2, 2001-2010, n = 119. RFA was available in period 2 only. RESULTS Hepatitis B virus infection was predominant in both periods. Surgical hemostasis was mainly achieved by hepatic artery ligation in period 1 and by RFA in period 2. The 30-day hospital mortality after surgical treatment was 55.6% (n = 18) in period 1 and 19.2% (n = 26) in period 2 (p = 0.012). Multivariate analysis identified 4 independent factors for better overall survival, namely, hemostasis by transarterial embolization [corrected] (hazard ratio 0.516, 95% confidence interval 0.354-0.751), hemostasis by RFA (hazard ratio 0.431, 95% confidence interval 0.236-0.790), having surgery as a subsequent treatment (hazard ratio 0.305, 95% confidence interval 0.186-0.498), and a serum total bilirubin level <19 umol/L (hazard ratio 1.596, 95% confidence interval 1.137-2.241). CONCLUSION The use of RFA for hemostasis during laparotomy greatly reduced the hospital mortality rate when compared with conventional hepatic artery ligation.
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Affiliation(s)
- Tan To Cheung
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
- * E-mail:
| | - Ronnie T. P. Poon
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Kenneth S. H. Chok
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Albert C. Y. Chan
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Simon H. Y. Tsang
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Wing Chiu Dai
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Thomas C. C. Yau
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - See Ching Chan
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Sheung Tat Fan
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
| | - Chung Mau Lo
- Department of Surgery, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
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Cheung TT, Fan ST, Chu FSK, Jenkins CR, Chok KSH, Tsang SHY, Dai WC, Chan ACY, Chan SC, Yau TCC, Poon RTP, Lo CM. Survival analysis of high-intensity focused ultrasound ablation in patients with small hepatocellular carcinoma. HPB (Oxford) 2013; 15:567-73. [PMID: 23458602 PMCID: PMC3731576 DOI: 10.1111/hpb.12025] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 09/05/2012] [Indexed: 12/12/2022]
Abstract
BACKGROUND High-intensity focused ultrasound (HIFU) ablation is a non-invasive treatment for hepatocellular carcinoma (HCC). At present, data on the treatment's long-term outcome are limited. This study analysed the survival outcome of HIFU ablation for HCCs smaller than 3 cm. PATIENTS AND METHODS Forty-seven patients with HCCs smaller than 3 cm received HIFU treatment between October 2006 and September 2010. Fifty-nine patients who received percutaneous radiofrequency ablation (RFA) were selected for comparison. The two groups of patients were compared in terms of pre-operative variables and survival. RESULTS More patients in the HIFU group patients had Child-Pugh B cirrhosis (34% versus 8.5%; P = 0.001). The 1- and 3-year overall survival rates of patients whose tumours were completely ablated in the HIFU group compared with the RFA group were 97.4% versus 94.6% and 81.2% versus 79.8%, respectively (P = 0.530). The corresponding 1- and 3-year disease-free survival rates were 63.6% versus 62.4% and 25.9% versus 34.1% (P = 0.683). CONCLUSIONS HIFU ablation is a safe and effective method for small HCCs. It can achieve survival outcomes comparable to those of percutaneous RFA and thus serves as a good alternative ablation treatment for patients with cirrhosis.
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Affiliation(s)
- Tan To Cheung
- Department of Surgery, The University of Hong KongHong Kong, China
| | - Sheung Tat Fan
- Department of Surgery, The University of Hong KongHong Kong, China,State Key Laboratory for Liver Research, The University of Hong KongHong Kong, China
| | | | - Caroline R Jenkins
- Department of Anaesthesiology, The University of Hong KongHong Kong, China
| | - Kenneth S H Chok
- Department of Surgery, The University of Hong KongHong Kong, China
| | - Simon H Y Tsang
- Department of Surgery, The University of Hong KongHong Kong, China
| | - Wing Chiu Dai
- Department of Surgery, The University of Hong KongHong Kong, China
| | - Albert C Y Chan
- Department of Surgery, The University of Hong KongHong Kong, China
| | - See Ching Chan
- Department of Surgery, The University of Hong KongHong Kong, China,State Key Laboratory for Liver Research, The University of Hong KongHong Kong, China
| | - Thomas C C Yau
- Department of Surgery, The University of Hong KongHong Kong, China
| | - Ronnie T P Poon
- Department of Surgery, The University of Hong KongHong Kong, China,State Key Laboratory for Liver Research, The University of Hong KongHong Kong, China
| | - Chung Mau Lo
- Department of Surgery, The University of Hong KongHong Kong, China,State Key Laboratory for Liver Research, The University of Hong KongHong Kong, China
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Cheung TT, Fan ST, Chan SC, Chok KSH, Chu FSK, Jenkins CR, Lo RCL, Fung JYY, Chan ACY, Sharr WW, Tsang SHY, Dai WC, Poon RTP, Lo CM. High-intensity focused ultrasound ablation: An effective bridging therapy for hepatocellular carcinoma patients. World J Gastroenterol 2013; 19:3083-3089. [PMID: 23716988 PMCID: PMC3662948 DOI: 10.3748/wjg.v19.i20.3083] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 04/19/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To analyze whether high-intensity focused ultrasound (HIFU) ablation is an effective bridging therapy for patients with hepatocellular carcinoma (HCC).
METHODS: From January 2007 to December 2010, 49 consecutive HCC patients were listed for liver transplantation (UCSF criteria). The median waiting time for transplantation was 9.5 mo. Twenty-nine patients received transarterial chemoembolization (TACE) as a bringing therapy and 16 patients received no treatment before transplantation. Five patients received HIFU ablation as a bridging therapy. Another five patients with the same tumor staging (within the UCSF criteria) who received HIFU ablation but not on the transplant list were included for comparison. Patients were comparable in terms of Child-Pugh and model for end-stage liver disease scores, tumor size and number, and cause of cirrhosis.
RESULTS: The HIFU group and TACE group showed no difference in terms of tumor size and tumor number. One patient in the HIFU group and no patient in the TACE group had gross ascites. The median hospital stay was 1 d (range, 1-21 d) in the TACE group and two days (range, 1-9 d) in the HIFU group (P < 0.000). No HIFU-related complication occurred. In the HIFU group, nine patients (90%) had complete response and one patient (10%) had partial response to the treatment. In the TACE group, only one patient (3%) had response to the treatment while 14 patients (48%) had stable disease and 14 patients (48%) had progressive disease (P = 0.00). Seven patients in the TACE group and no patient in the HIFU group dropped out from the transplant waiting list (P = 0.559).
CONCLUSION: HIFU ablation is safe and effective in the treatment of HCC for patients with advanced cirrhosis. It may reduce the drop-out rate of liver transplant candidate.
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Cheung TT, Chu FSK, Jenkins CR, Tsang DSF, Chok KSH, Chan ACY, Yau TCC, Chan SC, Poon RTP, Lo CM, Fan ST. Tolerance of high-intensity focused ultrasound ablation in patients with hepatocellular carcinoma. World J Surg 2013; 36:2420-7. [PMID: 22699746 PMCID: PMC3465545 DOI: 10.1007/s00268-012-1660-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Background High-intensity focused ultrasound (HIFU) ablation is a relatively new, noninvasive way of ablation for treating hepatocellular carcinoma (HCC). Emerging evidence has shown that it is effective for the treatment of HCC, even in patients with poor liver function. There is currently no data on the safety limit of HIFU ablation in patients with cirrhosis. However, this information is vital for the selection of appropriate patients for the procedure. We analyzed HCC patients who had undergone HIFU ablation and determined the lower limit of liver function and other patient factors with which HCC patients can tolerate this treatment modality. Methods Preoperative variables of 100 patients who underwent HIFU ablation for HCC were analyzed to identify the risk factors in HIFU intolerance in terms of stress-induced complications. Factors that may contribute to postablation complications were compared. Results Thirteen (13 %) patients developed a total of 18 complications. Morbidity was mainly due to skin and subcutaneous tissue injuries (n = 9). Five patients had first-degree skin burn, one had second-degree skin burn, and three had third-degree skin burn. Four complications were grade 3a in the Clavien classification and 14 were below this grade. Univariate analysis showed that age (p = 0.022) was the only independent factor in HIFU intolerance. Conclusions HIFU ablation is generally well tolerated in HCC patients with cirrhosis. It is safe for Child-Pugh A and B patients and selected Child-Pugh C patients. With this new modality, HCC patients who were deemed unsalvageable by other surgical means in the past because of simultaneous Child-Pugh B or C disease now have a new hope.
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Affiliation(s)
- Tan To Cheung
- Department of Surgery, The University of Hong Kong, 102 Pokfulam Road, Hong Kong, China.
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High-intensity focused ultrasound ablation as a bridging therapy for hepatocellular carcinoma patients awaiting liver transplantation. Hepatobiliary Pancreat Dis Int 2012; 11:542-4. [PMID: 23060402 DOI: 10.1016/s1499-3872(12)60221-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The scarcity of liver grafts in Asia leads to a significant dropout of patients from liver transplant waiting lists, particularly patients with hepatocellular carcinoma and a low model for end-stage liver disease score. In order to reduce dropping out, different bridging therapies are employed. We report the use of high-intensity focused ultrasound ablation as a bridging therapy for a patient with hepatocellular carcinoma of stage two and an extremely low platelet count (20X109/L). The ablation was successful. Blood tests showed that his liver function was similar before and after the treatment. No adhesion was encountered in the liver transplantation performed six months later.
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Huang WY, Jen YM, Lee MS, Chang LP, Chen CM, Ko KH, Lin KT, Lin JC, Chao HL, Lin CS, Su YF, Fan CY, Chang YW. Stereotactic body radiation therapy in recurrent hepatocellular carcinoma. Int J Radiat Oncol Biol Phys 2012; 84:355-61. [PMID: 22342300 DOI: 10.1016/j.ijrobp.2011.11.058] [Citation(s) in RCA: 145] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Indexed: 12/14/2022]
Abstract
PURPOSE To examine the safety and efficacy of Cyberknife stereotactic body radiation therapy (SBRT) and its effect on survival in patients of recurrent hepatocellular carcinoma (HCC). METHODS AND MATERIALS This was a matched-pair study. From January 2008 to December 2009, 36 patients with 42 lesions of unresectable recurrent HCC were treated with SBRT. The median prescribed dose was 37 Gy (range, 25 to 48 Gy) in 4-5 fractions over 4-5 consecutive working days. Another 138 patients in the historical control group given other or no treatments were selected for matched analyses. RESULTS The median follow-up time was 14 months for all patients and 20 months for those alive. The 1- and 2-year in-field failure-free rates were 87.6% and 75.1%, respectively. Out-field intrahepatic recurrence was the main cause of failure. The 2-year overall survival (OS) rate was 64.0%, and median time to progression was 8.0 months. In the multivariable analysis of all 174 patients, SBRT (yes vs. no), tumor size (≤4 cm vs. >4 cm), recurrent stage (stage IIIB/IV vs. I) and Child-Pugh classification (A vs. B/C) were independent prognostic factors for OS. Matched-pair analysis revealed that patients undergoing SBRT had better OS (2-year OS of 72.6% vs. 42.1%, respectively, p = 0.013). Acute toxicities were mild and tolerable. CONCLUSION SBRT is a safe and efficacious modality and appears to be well-tolerated at the dose fractionation we have used, and its use correlates with improved survival in this cohort of patients with recurrent unresectable HCC. Out-field recurrence is the major cause of failure. Further studies of combinations of SBRT and systemic therapies may be reasonable.
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Affiliation(s)
- Wen-Yen Huang
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC
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Cheung TT, Chan SC, Ho CL, Chok KSH, Chan ACY, Sharr WW, Ng KKC, Poon RTP, Lo CM, Fan ST. Can positron emission tomography with the dual tracers [11 C]acetate and [18 F]fludeoxyglucose predict microvascular invasion in hepatocellular carcinoma? Liver Transpl 2011; 17:1218-25. [PMID: 21688383 DOI: 10.1002/lt.22362] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Microvascular invasion is a poor prognostic indicator of the recurrence of hepatocellular carcinoma (HCC) after surgical treatment. Positron emission tomography (PET) with [(18) F]fludeoxyglucose ([(18) F]FDG) as a tracer has been employed to predict the prognosis before surgery for various kinds of tumors, but it has not been found to be sensitive enough for HCC. Thus, [(11) C]acetate has been adopted as an additional tracer. This study was designed to evaluate the ability of dual-tracer PET ([(18) F]FDG and [(11) C]acetate) to predict microvascular invasion before liver resection or transplantation. Fifty-eight HCC patients who were preoperatively examined with whole-body dual-tracer PET were studied. Twenty-five patients were [(18) F]FDG-positive, and 56 were [(11) C]acetate-positive. The sensitivity of [(18) F]FDG in detecting primary HCC was 43%, and the sensitivity of [(11) C]acetate was 93%. Twenty-nine patients had HCC with microvascular invasion according to the final pathological examination. The sensitivity, specificity, positive predictive value, and negative predictive value of [(18) F]FDG PET in predicting microvascular invasion were 55.2%, 69%, 64%, and 60.6%, respectively; the corresponding rates for [(11) C]acetate PET were 93.1%, 0%, 48.2%, and 0%. The factors associated with HCC recurrence, which included multifocal involvement, a large tumor size, microsatellite lesions, poor HCC differentiation, and an advanced stage of disease, were analyzed and compared with positive PET results. A tumor size greater than 5 cm was significantly associated with positive [(18) F]FDG PET results; [(11) C]acetate was not associated with poor prognostic indicators. Preoperative [(18) F]FDG PET may predict microvascular invasion. The addition of [(11) C]acetate improves the overall sensitivity of PET, but it has no incremental value in predicting microvascular invasion.
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Affiliation(s)
- Tan To Cheung
- Department of Surgery, University of Hong Kong, Hong Kong, China.
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Distant infusion of saline may enlarge coagulation volume during radiofrequency ablation of liver tissue using cool-tip electrodes without impairing predictability. AJR Am J Roentgenol 2011; 196:W837-43. [PMID: 21606278 DOI: 10.2214/ajr.10.5202] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVE Our aim was to evaluate the capability of a Cool-tip electrode to create larger coagulation volumes combined with a low-flow (0.1 mL/min) perfusion of hypertonic saline at a distance of 2 mm (hybrid applicator) without reducing either predictability or sphericity of the coagulation zone. MATERIALS AND METHODS A total of 48 radiofrequency ablations were performed on a total of 12 adult pigs: 24 with the Cool-tip (group 1) and 24 with the hybrid applicator (group 2). Volumes and diameters were assessed both macroscopically and with imaging techniques (ultrasound and MRI). Digital reconstruction techniques were also used. Reproducibility of the coagulations was assessed by means of the coefficient of variation. RESULTS The macroscopic assessment showed a significantly larger coagulation zone in group 2 than in group 1, both with (19.40 ± 11.38 cm(3) vs 9.16 ± 5.62 cm(3); p < 0.001) and without (19.54 ± 11.39 cm(3) vs 9.21 ± 5.74 cm(3); p < 0.001) digital reconstruction. Differences were also significant in the MRI assessment. The minimum transverse diameter was also significantly (p < 0.01) larger in group 2 than group 1: 2.46 ± 0.61 versus 1.86 ± 0.55 cm for macroscopic assessment, 2.33 ± 0.96 versus 1.69 ± 0.53 cm for ultrasound, and 2.41 ± 0.58 versus 1.8 ± 0.52 cm for MRI. The coefficient of variation was similar in both groups. CONCLUSION The results suggest that low-flow perfusion of hypertonic saline at 2 mm from a Cool-tip electrode could increase coagulation zone volume without reducing predictability.
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Computed Tomography–Guided High-Dose-Rate Brachytherapy in Hepatocellular Carcinoma: Safety, Efficacy, and Effect on Survival. Int J Radiat Oncol Biol Phys 2010; 78:172-9. [DOI: 10.1016/j.ijrobp.2009.07.1700] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Revised: 07/12/2009] [Accepted: 07/15/2009] [Indexed: 12/12/2022]
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Shan YS, Zuchini R, Tsai HW, Lin PW, Lee GB, Lin XZ. Bloodless Liver Resection Using Needle Arrays Under Alternating Electromagnetic Fields. Surg Innov 2010; 17:95-100. [DOI: 10.1177/1553350610368406] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background/Aim: Hemostasis is a major difficulty associated with hepatectomies. The authors designed a new thermal surgery system to reduce blood loss. Methods: The newly designed system consists of an alternating magnetic field generator and stainless steel needle arrays with thermosensitive bands. Lanyu pigs were used: 4 for the Kelly crushing method and 4 for the newly designed method. The procedures used were S4-S5 segmentectomies or left lateral segmentectomies, after which the amount of blood loss and operation times were compared. The pigs were observed for 4 weeks, after which liver pathologies were studied. Results: The blood loss in the method proposed by the authors was almost 0 mL, whereas with the Kelly crushing method it was 116 ± 35 mL. The method proposed in this study can save 15 to 25 minutes of operation time. The resected liver margins exhibited prominent apoptosis and fibrotic change in the remnant livers. Conclusions: The method proposed is a novel new way of performing thermal surgery.
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Affiliation(s)
| | | | | | - Pin-Wen Lin
- National Cheng Kung University, Tainan, Taiwan
| | - Gwo-Bin Lee
- National Cheng Kung University, Tainan, Taiwan
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Fan ST. Liver functional reserve estimation: state of the art and relevance for local treatments: the Eastern perspective. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2009; 17:380-4. [PMID: 19865790 DOI: 10.1007/s00534-009-0229-9] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2009] [Accepted: 09/01/2009] [Indexed: 02/06/2023]
Abstract
Liver function reserve estimation is important for selecting the appropriate patients for hepatectomy or ablation of tumors. Many liver function tests have been devised, but the indocyanine green (ICG) clearance test remains the most popular for its simplicity and perhaps accuracy. Compared with the Child-Pugh classification, the ICG retention value at 15 min (ICGR-15) after intravenous injection provides more information. Though a significant difference in ICGR-15 has been observed between patients with Child-Pugh A and B liver function, the hospital mortality rates following partial hepatectomy are not significantly different between the two groups. Yet, ICGR-15 values can differentiate patients with or without hospital mortality. The cutoff values of ICGR-15 for a safe major and minor hepatectomy are 14 and 22%, respectively.
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Affiliation(s)
- Sheung Tat Fan
- Department of Surgery, The University of Hong Kong, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong, China.
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