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Li Y, Li C, Wu G, Yang W, Wang X, Duan L, Niu L, Chen J, Zhang Y, Zhou W, Liu J, Hong L, Fan D. The obesity paradox in patients with colorectal cancer: a systematic review and meta-analysis. Nutr Rev 2022; 80:1755-1768. [PMID: 35182150 DOI: 10.1093/nutrit/nuac005] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
CONTEXT Obesity is widely regarded as an established risk factor for colorectal cancer (CRC). However, recent studies have shown that lower mortality and better cancer-specific survival were observed in CRC patients with elevated body mass index (BMI), an example of the obesity paradox, which is the inverse correlation between obesity and mortality in some populations. OBJECTIVE The aim of this systematic review and meta-analysis was to investigate the association between BMI and CRC outcomes. DATA SOURCES PubMed, Web of Science, MEDLINE, the Cochrane Library, and Embase databases were searched for relevant articles published from inception to December 31, 2020. STUDY SELECTION Studies comparing the prognosis of CRC patients with obesity or overweight with that of normal-weight CRC patients were eligible. DATA EXTRACTION Data were extracted by 2 reviewers independently; differences were resolved by a third reviewer. BMI was classified according to WHO categories. DATA ANALYSIS To assess the prognostic effects of different BMI categories in CRC patients, hazard ratios and 95%CIs of overall survival, disease-free survival, and cancer-specific survival were extracted from included articles. RESULTS Sixteen studies (55 391 patients in total) were included. Higher BMI was significantly associated with more favorable CRC outcomes. Compared with normal-weight patients, underweight patients had worse overall survival (HR = 1.26; 95%CI, 1.15-1.37) and disease-free survival (HR = 1.19; 95%CI, 1.11-1.27, while patients with overweight had better overall survival (HR = 0.92; 95%CI, 0.86-0.99), disease-free survival (HR = 0.96; 95%CI, 0.93-1.00), and cancer-specific survival (HR = 0.86; 95%CI, 0.76-0.98). Patients with morbid obesity had worse overall survival (HR = 1.12; 95%CI, 1.02-1.22) and disease-free survival (HR = 1.15; 95%CI, 1.07-1.24) than normal-weight patients. There was no significant difference in cancer-specific survival between patients with obesity (HR = 0.94; 95%CI, 0.76-1.16) and patients with normal weight, nor between patients with underweight and patients with normal weight (HR = 1.14; 95%CI, 0.82-1.58). CONCLUSIONS CRC patients with a higher BMI appear to have reduced mortality compared with normal-weight CRC patients, even though higher BMI/obesity is an established determinant for the development of CRC. SYSTEMATIC REVIEW REGISTRATION PROSPERO registration no. CRD42020202320.
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Affiliation(s)
- Yiding Li
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Chenhan Li
- College of Life Science, Northwest University, Xi'an, Shaanxi Province, China
| | - Guiling Wu
- Key Laboratory of Ministry of Education, School of Aerospace Medicine, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Wanli Yang
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases , Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Xiaoqian Wang
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi Province , China
| | - Lili Duan
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an , Shaanxi Province, China
| | - Liaoran Niu
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University , Xi'an, Shaanxi Province, China
| | - Junfeng Chen
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Yujie Zhang
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Wei Zhou
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Jinqiang Liu
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Liu Hong
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases , Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - Daiming Fan
- the State Key Laboratory of Cancer Biology and National Clinical Research Center for Digestive Diseases, Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, Shaanxi Province, China
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Serra-Aracil X, Gil-Barrionuevo E, Lobato-Gil R, Gonzalez-Costa A, Mora-López L, Pallisera-Lloveras A, Serra-Pla S, Navarro-Soto S. Is obesity a factor of surgical difficulty in transanal endoscopic surgery? Am J Surg 2020; 220:687-692. [PMID: 31983409 DOI: 10.1016/j.amjsurg.2020.01.027] [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: 11/20/2019] [Revised: 01/15/2020] [Accepted: 01/17/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND The aim of this study is to assess the feasibility of transanal endoscopic surgery (TES) in obese patients. METHODS Observational descriptive study evaluating the feasibility of TES in obese rectal tumors between June 2004 and January 2019. Patients were assigned to two groups: body mass index (BMI) < 30 kg/m2 and BMI ≥30 kg/m2, the latter defined as obese. RESULTS From 775 patients, 681 were enrolled in the study, 145 (21.3%) of them obese. No statistically significant differences between groups were found with respect to overall morbidity (27, 18.6%).The obese patients presented trends towards shorter mean surgical time (65 min, IQR 48 min), less perforation in the peritoneal cavity (eight, 5.5%), and 133 (91.7%) presented a lower rate of lesion fragmentation. CONCLUSION There were no significant differences in postoperative outcomes in obese patients (BMI ≥30 kg/m2). TES in those obese patients does not represent a factor of surgical difficulty.
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Affiliation(s)
- Xavier Serra-Aracil
- Department of Colorectal Surgery, Department of General and Digestive Surgery, Parc Taulí University Hospital, Universidad Autonoma de Barcelona (UAB), Parc Taulí S/n, 08208, Sabadell, Barcelona, Spain.
| | - Esther Gil-Barrionuevo
- Department of Colorectal Surgery, Department of General and Digestive Surgery, Parc Taulí University Hospital, Universidad Autonoma de Barcelona (UAB), Parc Taulí S/n, 08208, Sabadell, Barcelona, Spain
| | - Raquel Lobato-Gil
- Department of Colorectal Surgery, Department of General and Digestive Surgery, Parc Taulí University Hospital, Universidad Autonoma de Barcelona (UAB), Parc Taulí S/n, 08208, Sabadell, Barcelona, Spain
| | - Anna Gonzalez-Costa
- Department of Colorectal Surgery, Department of General and Digestive Surgery, Parc Taulí University Hospital, Universidad Autonoma de Barcelona (UAB), Parc Taulí S/n, 08208, Sabadell, Barcelona, Spain
| | - Laura Mora-López
- Department of Colorectal Surgery, Department of General and Digestive Surgery, Parc Taulí University Hospital, Universidad Autonoma de Barcelona (UAB), Parc Taulí S/n, 08208, Sabadell, Barcelona, Spain
| | - Anna Pallisera-Lloveras
- Department of Colorectal Surgery, Department of General and Digestive Surgery, Parc Taulí University Hospital, Universidad Autonoma de Barcelona (UAB), Parc Taulí S/n, 08208, Sabadell, Barcelona, Spain
| | - Sheila Serra-Pla
- Department of Colorectal Surgery, Department of General and Digestive Surgery, Parc Taulí University Hospital, Universidad Autonoma de Barcelona (UAB), Parc Taulí S/n, 08208, Sabadell, Barcelona, Spain
| | - Salvador Navarro-Soto
- Department of Colorectal Surgery, Department of General and Digestive Surgery, Parc Taulí University Hospital, Universidad Autonoma de Barcelona (UAB), Parc Taulí S/n, 08208, Sabadell, Barcelona, Spain
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Monn MF, Waters JA, Mellon MJ. Use of rectal mucosal grafts in substitution urethroplasty: an early series. Transl Androl Urol 2018; 7:907-911. [PMID: 30505726 PMCID: PMC6256045 DOI: 10.21037/tau.2018.10.12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background To evaluate the feasibility of use of rectal mucosal grafts for augmentation urethroplasty. Methods A series of five patients who underwent rectal mucosal graft urethroplasty for urethral stricture disease were identified. Descriptive statistics were used to describe these patients. Primary endpoints were recurrence of stricture and perioperative morbidity. Results Five patients underwent rectal mucosal graft augmentation urethroplasty. Four had a history of prior buccal mucosal graft (BMG) urethroplasty and one had a history of head and neck cancer. Rectal mucosa was noted to be thinner and required more tailoring than buccal mucosa. All patients had patent urethras at time of postoperative retrograde urethrogram. A small diverticulum was noted in one patient with no further sequelae. No complications from rectal mucosal graft harvest were noted. All patients with prior buccal grafting subjectively preferred the rectal graft due to fewer side effects. Subjectively, patients with prior buccal grafts preferred the post-operative recovery following rectal mucosal graft urethroplasty. Conclusions Rectal mucosal graft augmentation urethroplasty is a safe alternative in patients with contraindications to buccal grafting with limited morbidity.
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Affiliation(s)
- M Francesca Monn
- 1Department of Urology, 2Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Joshua A Waters
- 1Department of Urology, 2Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Matthew J Mellon
- 1Department of Urology, 2Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
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