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Ji J, Mi S, Hou Z, Zhang Z, Qiu G, Jin Z, Huang J. Impact of imaging-diagnosed sarcopenia on outcomes in patients with biliary tract cancer after surgical resection: a systematic review and meta-analysis. World J Surg Oncol 2024; 22:229. [PMID: 39218917 PMCID: PMC11367777 DOI: 10.1186/s12957-024-03516-0] [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] [Received: 05/04/2024] [Accepted: 08/27/2024] [Indexed: 09/04/2024] Open
Abstract
BACKGROUND AND AIMS Sarcopenia has been associated with poor prognosis in patients with malignant tumors. However, its impact on the outcomes of patients with biliary tract cancer (BTC) undergoing surgical resection remains unclear and warrants further review. This study aims to summarize the available evidence on this issue. METHODS A systematic search was conducted in PubMed, Embase, Web of Science, and the Cochrane Library for eligible studies up to March 10, 2024. We extracted data on overall survival (OS), recurrence free survival (RFS), and postoperative major complications from the included studies as the outcomes of interest. Following data synthesis and analysis, we assessed the heterogeneity and performed subgroup analyses. Additionally, the potential for publication bias was evaluated. RESULTS A total of 26 studies involving 4292 BTC patients were ultimately retrieved. The findings indicated that sarcopenia was significantly associated with reduced OS in BTC patients after surgery (adjusted HR: 2.03, 95% CI: 1.65-2.48, P < 0.001, I2 = 57.4%). Moreover, sarcopenia may also be linked to poorer RFS (adjusted HR: 2.15, 95% CI: 1.79-2.59, P < 0.001, I2 = 0%) and increased postoperative major complications (OR: 1.22, 95% CI 1.02-1.47, P = 0.033, I2 = 29.2%) as well. Notably, no significant publication bias was detected through funnel plots and Egger's tests. CONCLUSION Sarcopenia is associated with poorer OS in BTC patients following surgery. Additionally, it may serve as a prognostic indicator for poorer RFS and increased postoperative major complications. Further studies are warrant to standardize existing definitions and validate these findings.
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Affiliation(s)
- Jun Ji
- Division of Liver Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Shizheng Mi
- Division of Liver Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ziqi Hou
- Division of Liver Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhihong Zhang
- Division of Liver Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Guoteng Qiu
- Division of Liver Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhaoxing Jin
- Division of Liver Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Jiwei Huang
- Division of Liver Surgery, Department of General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, China.
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Heus C, Stelten S, Kenter GG, Buffart LM, van Lonkhuijzen LRCW. Body composition and peri- and postoperative complications in patients with gynaecological malignancies: A systematic review. Gynecol Oncol 2024; 190:131-138. [PMID: 39182424 DOI: 10.1016/j.ygyno.2024.08.014] [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: 04/04/2023] [Revised: 08/13/2024] [Accepted: 08/14/2024] [Indexed: 08/27/2024]
Abstract
BACKGROUND In general abdominal surgery, the ratio of fat to muscle mass, or body composition measures, shows a stronger association with complications than body mass index. These studies include male and female patients. Women have a different body composition than men. Therefore, findings from general abdominal surgery cannot be extrapolated to women with cancer. The aim of this systematic review is to summarise the evidence on the association between body composition and peri- and postoperative complications in patients with gynaecological cancer. METHODS Pubmed, Embase and the Cochrane Central databases were searched in June 2023. Studies were eligible if they included patients undergoing surgery for gynaecological cancer and reported on the association between body composition (muscle or fat mass) and surgical complications. The quality of the studies was assessed using the Newcastle-Ottawa quality assessment scale. A best-evidence synthesis was used to summarise the level of evidence. RESULTS Fifteen studies were included that assessed muscle mass (n = 9) or fat mass (n = 6). We found strong evidence that there was no association between visceral fat and length of hospital stay. We found moderate evidence that a higher amount of good quality muscle was associated with a lower risk of postoperative complications. We found moderate evidence that there was no association between muscle or fat mass (i.e., muscle- or subcutaneous fat) and postoperative complications or fat mass and intraoperative complications. There was insufficient evidence for an association between visceral fat and intraoperative or postoperative complications, and for an association between muscle mass or -quality and length of hospital stay. There was high heterogeneity in the methods used to measure body composition, hampering meta-analyses. CONCLUSION The association between body composition, particularly adipose tissue and muscle quality, and complications suggests that these measures may be of interest in determining postoperative risk in women undergoing surgery for gynaecological cancer.
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Affiliation(s)
- C Heus
- Amsterdam UMC, Department of Obstetrics and Gynaecologic Oncology Amsterdam (CGOA), Meibergdreef 9, 1105, AZ, Amsterdam, the Netherlands; Northwest Clinics Den Helder, Department of Gynaecology, Huisduinerweg 3, 1782GZ Den Helder, the Netherlands.
| | - S Stelten
- Radboud University Medical Center, Department of Medical BioSciences, P.O. Box 9101, 6500, HB, Nijmegen, the Netherlands
| | - G G Kenter
- Amsterdam UMC, Department of Obstetrics and Gynaecologic Oncology Amsterdam (CGOA), Meibergdreef 9, 1105, AZ, Amsterdam, the Netherlands
| | - L M Buffart
- Radboud University Medical Center, Department of Medical BioSciences, P.O. Box 9101, 6500, HB, Nijmegen, the Netherlands
| | - L R C W van Lonkhuijzen
- Amsterdam UMC, Department of Obstetrics and Gynaecologic Oncology Amsterdam (CGOA), Meibergdreef 9, 1105, AZ, Amsterdam, the Netherlands
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Sugiura R, Kuwatani M, Kawakubo K, Kishi K, Yonemura H, Nozawa S, Ohara M, Noji T, Hirano S, Sakamoto N. Preoperative risk factors for skeletal muscle mass loss in patients with biliary tract cancer. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2024; 31:549-558. [PMID: 38845092 DOI: 10.1002/jhbp.12006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2024]
Abstract
BACKGROUND Endoscopic retrograde cholangiography (ERC)-related procedures, usually performed before biliary tract cancer (BTC) surgery, are associated with increased risk for various complications, which can cause sarcopenia. No study has previously elucidated the relationship between preoperative ERC-related procedures and sarcopenia/skeletal muscle mass loss. METHODS Patients with BTC who underwent radical surgical resection following ERC-related procedures were included. Skeletal muscle mass was evaluated using the psoas muscle mass index (PMI), which was determined using computed tomography images, and the change in PMI before the initial pre-ERC and surgery (ΔPMI) was calculated. Risk factors for advanced skeletal muscle mass loss, defined as a large ΔPMI, were evaluated. RESULTS The study cohort included 90 patients with a median age of 72 (interquartile range, 65-75) years. The median PMI pre-ERC and surgery was 4.40 and 4.15 cm2/m2, respectively (p < .01). The median ΔPMI was -6.2% (interquartile range, -10.9% to 0.5%). By multivariate analysis, post-ERC pancreatitis and cholangitis before surgery were independent predictive factors for large PMI loss (odds ratio, 4.57 and 3.18, respectively; p = .03 and p = .02, respectively). CONCLUSIONS Skeletal muscle mass decreases preoperatively in most patients with BTC undergoing ERC. Post-ERC pancreatitis and cholangitis before surgery were independent risk factors for large skeletal muscle mass loss.
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Affiliation(s)
- Ryo Sugiura
- Department of Gastroenterology and Hepatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masaki Kuwatani
- Department of Gastroenterology and Hepatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kazumichi Kawakubo
- Department of Gastroenterology and Hepatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Kazuma Kishi
- Department of Gastroenterology and Hepatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroki Yonemura
- Department of Gastroenterology and Hepatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Shunichiro Nozawa
- Department of Gastroenterology and Hepatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Masatsugu Ohara
- Department of Gastroenterology and Hepatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takehiro Noji
- Department of Gastroenterological Surgery II, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Satoshi Hirano
- Department of Gastroenterological Surgery II, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Naoya Sakamoto
- Department of Gastroenterology and Hepatology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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He J, Huang Y, Huang N, Jiang J. Prevalence and predictive value of sarcopenia in surgically treated cholangiocarcinoma: a comprehensive review and meta-analysis. Front Oncol 2024; 14:1363843. [PMID: 38571501 PMCID: PMC10989063 DOI: 10.3389/fonc.2024.1363843] [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: 12/31/2023] [Accepted: 02/27/2024] [Indexed: 04/05/2024] Open
Abstract
Background Sarcopenia, marked by a reduction in skeletal muscle mass and function, is a condition that can manifest in elderly patients with cancer and has been recognized as a possible adverse factor affecting the survival of individuals diagnosed with malignant tumors. This systematic review and meta-analysis aimed to examine the prevalence of sarcopenia in individuals with cholangiocarcinoma while concurrently investigating the potential correlations between the presence of sarcopenia and various critical factors, including survival outcomes and postoperative complications. Methods A comprehensive search was conducted across multiple databases, including EMBASE, PubMed, Web of Science, Cochrane Library, and CNKI, employing keywords such as sarcopenia, cholangiocarcinoma, and prognosis. This research explored the prognostic value of sarcopenia on the survival of cholangiocarcinoma. The findings of this meta-analysis were presented using forest plots and a summarized effects model. The Newcastle-Ottawa Scale (NOS) was employed to evaluate the quality of the studies included in the analysis. Results A total of 33 articles from five databases were in in the quantitative analysis. A comprehensive meta-analysis revealed that the overall prevalence of sarcopenia among individuals diagnosed with cholangiocarcinoma was43%. Moreover, the analysis revealed a significant and noteworthy correlation between sarcopenia and key clinical parameters such as overall survival (OS), Recurrence-Free Survival (RFS), and Disease-Free Survival (DFS) in patients with cholangiocarcinoma. Subgroup analysis revealed that, when categorized by various ethnicities, diagnostic techniques, and tumor locations, sarcopenia consistently retained its status as a negative predictive factor. Furthermore, sarcopenia has emerged as a risk factor for postoperative complications. All included studies had an NOS score greater than 5, indicating a high quality of evidence. Conclusion The results suggest that sarcopenia is significantly related to survival outcomes and postoperative complications in cholangiocarcinoma. Appropriate diagnosis and treatment of sarcopenia should be implemented to improve the prognosis of individuals with cholangiocarcinoma. Systematic Review Registration https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42023479866, identifier CRD42023479866.
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Affiliation(s)
- Jie He
- Clinical Medical College of Chengdu Medical College, Chengdu, Sichuan, China
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Yuanyuan Huang
- Clinical Medical College of Chengdu Medical College, Chengdu, Sichuan, China
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Na Huang
- Clinical Medical College of Chengdu Medical College, Chengdu, Sichuan, China
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Jiaqing Jiang
- Clinical Medical College of Chengdu Medical College, Chengdu, Sichuan, China
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Wang G, Mantas A, Heij LR, Al‐Masri TM, Liu D, Heise D, Schmitz SM, Olde Damink SWM, Luedde T, Lang SA, Ulmer TF, Neumann UP, Bednarsch J. Body composition is associated with postoperative complications in perihilar cholangiocarcinoma. Cancer Med 2024; 13:e6878. [PMID: 38164056 PMCID: PMC10807576 DOI: 10.1002/cam4.6878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/11/2023] [Accepted: 12/13/2023] [Indexed: 01/03/2024] Open
Abstract
BACKGROUND Perihilar cholangiocarcinoma (pCCA) is a malignant tumor of the hepatobiliary system which is still associated with a challenging prognosis. Postoperative complications play a crucial role in determining the overall prognosis of patients with pCCA. Changes in body composition (BC) have been shown to impact the prognosis of various types of tumors. Therefore, our study aimed to investigate the correlation between BC, postoperative complications and oncological outcome in patients with pCCA. METHODS All patients with pCCA who underwent curative-intent surgery for pCCA between 2010 and 2022 were included in this analysis. BC was assessed using preoperative computed tomography and analyzed with the assistance of a 3D Slicer software. Univariate and multivariate binary logistic regression analyses were conducted to examine the relationship between BC and clinical characteristics including various measurements of postoperative complications and Cox regressions and Kaplan-Meier analysis to evaluate oncological risk factors in the study cohort. RESULTS BC was frequently altered in patients undergoing curative-intent liver resection for pCCA (n = 204) with 52.5% of the patients showing obesity, 55.9% sarcopenia, 21.6% sarcopenic obesity, 48.5% myosteatosis, and 69.1% visceral obesity. In multivariate analysis, severe postoperative complications (Clavien-Dindo ≥3b) were associated with body mass index (BMI) (Odds ratio (OR) = 2.001, p = 0.024), sarcopenia (OR = 2.145, p = 0.034), and myosteatosis (OR = 2.097, p = 0.017) as independent predictors. Furthermore, sarcopenia was associated with reduced overall survival (OS) in pCCA patients (sarcopenia vs. no-sarcopenia, 21 months vs. 32 months, p = 0.048 log rank). CONCLUSIONS BC is highly associated with severe postoperative complications in patients with pCCA and shows tendency to be associated impaired overall survival. Preoperative assessment of BC and interventions to improve BC might therefore be key to improve outcome in pCCA patients undergoing surgical therapy.
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Affiliation(s)
- Guanwu Wang
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
| | - Anna Mantas
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
- University of Applied Science AachenAachenGermany
| | - Lara R. Heij
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
- Department of Surgery and TransplantationUniversity Hospital EssenEssenGermany
| | - Tarick M. Al‐Masri
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
- University of Applied Science AachenAachenGermany
| | - Dong Liu
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
| | - Daniel Heise
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
- Department of Surgery and TransplantationUniversity Hospital EssenEssenGermany
| | - Sophia M. Schmitz
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
- Department of Surgery and TransplantationUniversity Hospital EssenEssenGermany
| | | | - Tom Luedde
- Department of Gastroenterology, Hepatology and Infectious DiseasesHeinrich Heine University DuesseldorfDuesseldorfGermany
| | - Sven A. Lang
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
- Department of Surgery and TransplantationUniversity Hospital EssenEssenGermany
| | - Tom F. Ulmer
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
| | - Ulf P. Neumann
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
- Department of Surgery and TransplantationUniversity Hospital EssenEssenGermany
- Department of SurgeryMaastricht University Medical Centre (MUMC)MaastrichtThe Netherlands
| | - Jan Bednarsch
- Department of Surgery and TransplantationUniversity Hospital RWTH AachenAachenGermany
- Department of Surgery and TransplantationUniversity Hospital EssenEssenGermany
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Knoedler S, Schliermann R, Knoedler L, Wu M, Hansen FJ, Matar DY, Obed D, Vervoort D, Haug V, Hundeshagen G, Paik A, Kauke-Navarro M, Kneser U, Pomahac B, Orgill DP, Panayi AC. Impact of sarcopenia on outcomes in surgical patients: a systematic review and meta-analysis. Int J Surg 2023; 109:4238-4262. [PMID: 37696253 PMCID: PMC10720826 DOI: 10.1097/js9.0000000000000688] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 08/04/2023] [Indexed: 09/13/2023]
Abstract
BACKGROUND Surgeons have historically used age as a preoperative predictor of postoperative outcomes. Sarcopenia, the loss of skeletal muscle mass due to disease or biological age, has been proposed as a more accurate risk predictor. The prognostic value of sarcopenia assessment in surgical patients remains poorly understood. Therefore, the authors aimed to synthesize the available literature and investigate the impact of sarcopenia on perioperative and postoperative outcomes across all surgical specialties. METHODS The authors systematically assessed the prognostic value of sarcopenia on postoperative outcomes by conducting a systematic review and meta-analysis according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, searching the PubMed/MEDLINE and EMBASE databases from inception to 1st October 2022. Their primary outcomes were complication occurrence, mortality, length of operation and hospital stay, discharge to home, and postdischarge survival rate at 1, 3, and 5 years. Subgroup analysis was performed by stratifying complications according to the Clavien-Dindo classification system. Sensitivity analysis was performed by focusing on studies with an oncological, cardiovascular, emergency, or transplant surgery population and on those of higher quality or prospective study design. RESULTS A total of 294 studies comprising 97 643 patients, of which 33 070 had sarcopenia, were included in our analysis. Sarcopenia was associated with significantly poorer postoperative outcomes, including greater mortality, complication occurrence, length of hospital stay, and lower rates of discharge to home (all P <0.00001). A significantly lower survival rate in patients with sarcopenia was noted at 1, 3, and 5 years (all P <0.00001) after surgery. Subgroup analysis confirmed higher rates of complications and mortality in oncological (both P <0.00001), cardiovascular (both P <0.00001), and emergency ( P =0.03 and P =0.04, respectively) patients with sarcopenia. In the transplant surgery cohort, mortality was significantly higher in patients with sarcopenia ( P <0.00001). Among all patients undergoing surgery for inflammatory bowel disease, the frequency of complications was significantly increased among sarcopenic patients ( P =0.007). Sensitivity analysis based on higher quality studies and prospective studies showed that sarcopenia remained a significant predictor of mortality and complication occurrence (all P <0.00001). CONCLUSION Sarcopenia is a significant predictor of poorer outcomes in surgical patients. Preoperative assessment of sarcopenia can help surgeons identify patients at risk, critically balance eligibility, and refine perioperative management. Large-scale studies are required to further validate the importance of sarcopenia as a prognostic indicator of perioperative risk, especially in surgical subspecialties.
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Affiliation(s)
- Samuel Knoedler
- Department of Plastic Surgery and Hand Surgery, Klinikum Rechts der Isar, Technical University of Munich, Munich
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, USA
| | - Rainer Schliermann
- Faculty of Social and Health Care Sciences, University of Applied Sciences Regensburg, Regensburg
| | - Leonard Knoedler
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, USA
| | - Mengfan Wu
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston
- Department of Plastic Surgery, Peking University Shenzhen Hospital, Shenzhen, Guangdong, People’s Republic of China
| | - Frederik J. Hansen
- Department of General and Visceral Surgery, Friedrich-Alexander University Erlangen, Erlangen
| | - Dany Y. Matar
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston
| | - Doha Obed
- Department of Plastic, Aesthetic, Hand and Reconstructive Surgery, Hannover Medical School, Hannover
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston
| | - Dominique Vervoort
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Valentin Haug
- Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston
| | - Gabriel Hundeshagen
- Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - Angie Paik
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, USA
| | - Martin Kauke-Navarro
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, USA
| | - Ulrich Kneser
- Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
| | - Bohdan Pomahac
- Department of Surgery, Division of Plastic and Reconstructive Surgery, Yale New Haven Hospital, Yale School of Medicine, New Haven, USA
| | - Dennis P. Orgill
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston
| | - Adriana C. Panayi
- Department of Hand, Plastic and Reconstructive Surgery, Microsurgery, Burn Center, BG Trauma Center Ludwigshafen, University of Heidelberg, Ludwigshafen, Germany
- Department of Surgery, Division of Plastic Surgery, Brigham and Women’s Hospital and Harvard Medical School, Boston
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