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Shi W, Chen J, Yao N, Wu T, Suo X, Wang Q, Liu J, Yu G, Zhang K. The prognostic ability of radiotherapy of different colorectal cancer histological subtypes and tumor sites. Sci Rep 2023; 13:11758. [PMID: 37474552 PMCID: PMC10359278 DOI: 10.1038/s41598-023-38853-9] [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: 02/16/2023] [Accepted: 07/16/2023] [Indexed: 07/22/2023] Open
Abstract
The prognostic significance of radiotherapy (RT) for colorectal cancer (CRC) has shown conflicting results, particularly among different pathological subtypes, including adenocarcinoma (AC), mucinous adenocarcinoma (MC), and signet-ring cell carcinoma (SR). This study analyzed the prognosis of three pathological CRC types and focused on the prognostic significance of RT on three CRC histological subtypes. Patients diagnosed with AC (n = 54,174), MC (n = 3813), and SR (n = 664) in the National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) database (2010-2017) were evaluated. Cox regression models and competitive risk models were built to assess the effect of RT on the risk of CRC-associated death. Potential interactions between RT and stratified variables including age, sex, and tumor location were examined by multiplicative models. Compared with AC patients, SR patients had the worst overall survival (OS) among 3 subtypes of CRC (log-rank test, p < 0.001). Compared with patients who did not receive radiotherapy, RT was associated with a 1.09-fold (HR = 1.09, 95%[CI]: 1.03, 1.15) elevated risk of death among AC patients. In the SR group, RT significantly reduced the risk of death by 39% (HR = 0.61, 95%[CI]: 0.39-0.95). However, RT did not appear to independently influence survival in the MC group (HR = 0.96, 95%[CI]: 0.77, 1.21). In the subgroup analysis, tumor location (colon and rectum) significantly modified the association between RT and the risk of death among the AC and SR patients (p for interaction < 0.05). SR patients exhibited a worse OS (overall survival) than AC patients, and the effect of RT varied according to CRC histological subtypes. This can ultimately lead to more personalized and effective treatment strategies for CRC patients.
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Affiliation(s)
- Wenzai Shi
- Department of Hepatobiliary Surgery, Peking University International Hospital, Life Park Road No.1 Life Science Park of Zhong Guancun, Chang Ping District, Beijing, 102206, China
| | - Jianfei Chen
- Department of Surgery, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, China
- Ninth School of Clinical Medicine, Peking University, Beijing, 100038, China
- School of Oncology, Capital Medical University, Beijing, 100038, China
| | - Nan Yao
- Department of General Surgery, Aerospace Center Hospital, Beijing, 100089, China
| | - Tiantian Wu
- Department of Hepatobiliary Surgery, Peking University International Hospital, Life Park Road No.1 Life Science Park of Zhong Guancun, Chang Ping District, Beijing, 102206, China
| | - Xiaopeng Suo
- Department of Hepatobiliary Surgery, Peking University International Hospital, Life Park Road No.1 Life Science Park of Zhong Guancun, Chang Ping District, Beijing, 102206, China
| | - Qiang Wang
- Department of Hepatobiliary Surgery, Peking University International Hospital, Life Park Road No.1 Life Science Park of Zhong Guancun, Chang Ping District, Beijing, 102206, China
| | - Jun Liu
- Department of Hepatobiliary Surgery, Peking University International Hospital, Life Park Road No.1 Life Science Park of Zhong Guancun, Chang Ping District, Beijing, 102206, China
| | - Guoyong Yu
- Department of Nephrology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, East 4th North Street 279, Dongcheng District, Beijing, 100007, China.
| | - Keming Zhang
- Department of Hepatobiliary Surgery, Peking University International Hospital, Life Park Road No.1 Life Science Park of Zhong Guancun, Chang Ping District, Beijing, 102206, China.
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Cheng BL, Duminie SP, Mitei M, Pickhardt PJ, Kanne JP, Parker RK, Hartung MP. CT without borders: Comparison of diagnoses for abdominal pain from a teaching hospital in rural Kenya and a US academic medical center. Abdom Radiol (NY) 2023; 48:2196-2205. [PMID: 36941388 PMCID: PMC10027257 DOI: 10.1007/s00261-023-03869-2] [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: 01/09/2023] [Revised: 02/18/2023] [Accepted: 02/21/2023] [Indexed: 03/23/2023]
Abstract
PURPOSE Radiology global health opportunities are expanding as more hospitals in low- and middle-income countries utilize CT. This creates opportunities for global health program building, education, service, and research. This study determines the diagnostic yield and variety of abdominopelvic CT diagnoses for abdominal pain in a US academic medical center (UW) compared to a rural Kenyan teaching hospital (Tenwek). METHODS A retrospective, cross-sectional sequential sample of 750 adults from both hospitals who underwent abdominopelvic CT for abdominal pain from February 2019 through July 2020 was obtained. Exclusion criteria were trauma, cancer staging, and recent hospitalization or surgery. Patient age, sex, comparison studies, use of contrast, known cancer diagnosis, and CT diagnoses were compared. Negative exam rate, acute abdomen diagnosis, and new cancer diagnosis were recorded. Statistical analysis was performed using R. RESULTS 750 UW patients met inclusion criteria (mean age 53.3 ± 20 years; 442 women) and 750 Tenwek patients met inclusion criteria (mean age 52.5 ± 18 years; 394 women). 72% of UW patients had comparison imaging compared to 6% of Tenwek patients. 11% (83/750) of UW patients had a known cancer diagnosis compared to 1% (10/750) of Tenwek patients. 39% of UW patients had a negative exam compared to 23% of Tenwek patients (p < 0.001). 58% of UW patients had an acute abdomen diagnosis compared to 38% of Tenwek patients (p < 0.001). 10 of the 15 top acute abdomen diagnoses were shared, but in different order of frequency. Diagnoses unique to UW were diverticulitis, constipation, stercoral colitis, and epiploic appendagitis. Diagnoses unique to Tenwek were tuberculosis and hydatidosis. 3% of UW patients received a new cancer diagnosis (7/19 metastatic), compared to 40% of Tenwek patients (153/303 metastatic) (p < 0.001). CONCLUSION For adults undergoing CT for abdominal pain, there are differences in the prevalence of abdominal pain diagnoses, new cancer diagnosis, and negative exam rate between the rural Kenyan teaching hospital and the US academic medical center.
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Affiliation(s)
- Bryan L Cheng
- University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Sean P Duminie
- University of Wisconsin-Madison School of Medicine and Public Health, Madison, WI, USA
| | - Mercy Mitei
- Department of Surgery, Tenwek Hospital, Bomet, Kenya
| | - Perry J Pickhardt
- Department of Radiology, University of Wisconsin-Madison School of Medicine and Public Health, 600 Highland Ave, E3/311 CSC, Madison, WI, 53792-3252, USA
| | - Jeffrey P Kanne
- Department of Radiology, University of Wisconsin-Madison School of Medicine and Public Health, 600 Highland Ave, E3/311 CSC, Madison, WI, 53792-3252, USA
| | | | - Michael P Hartung
- Department of Radiology, University of Wisconsin-Madison School of Medicine and Public Health, 600 Highland Ave, E3/311 CSC, Madison, WI, 53792-3252, USA.
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Implementation of a Surgical Critical Care Service Reduces Failure to Rescue in Emergency Gastrointestinal Surgery in Rural Kenya. Ann Surg 2023; 277:e719-e724. [PMID: 34520427 DOI: 10.1097/sla.0000000000005215] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE We aimed to evaluate the implementation of a dedicated Surgical critical care service (SCCS) on failure to rescue (FTR) rates in rural Kenya. SUMMARY BACKGROUND DATA FTR adversely impacts perioperative outcomes. In the resource-limited contexts of low- and middle-income countries, emergency gastrointestinal surgery carries high morbidity and mortality rates. Quality improvement initiatives that decrease FTR rates are essential for improving perioperative care. METHODS All patients who underwent emergency gastrointestinal surgery between January 2016 and June 2019 at Tenwek Hospital in rural Kenya were reviewed. Critical care capabilities were constant throughout the study period. A supervised surgical resident was dedicated to the daily care of critically ill surgical patients beginning in January 2018. The impact of the SCCS initiation on the outcome of FTR was evaluated, controlling for patient complexity via the African Surgical Outcomes Study Surgical Risk Score. RESULTS A total of 484 patients were identified, consisting of 278 without and 206 with an active SCCS. A total of 165 (34.1%) patients experienced postoperative complications, including 49 mortalities (10.1%) yielding an FTR rate of 29.7%. The FTR rate decreased after SCCS implementation from 36.8% (95% CI: 26.7%-47.8%) to 21.8% (95% CI: 13.2%-32.6%) ( P = 0.035) despite an increase in the average patient African Surgical Outcomes Study score from 14.5 (95% CI, 14.1-14.9) to 15.2 (95% CI, 14.7-15.7) ( P =0.03). CONCLUSIONS The implementation of an SCCS in rural Kenya resulted in decreased rates of FTR despite an increase in patient complexity and severity of critical illness.
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Hassen HY, Hussien FM, Hassen AM, Dewau R, Amsalu ET, Limenih MA, Berhe NM, Kassaw NA, Sisay BG, Manzar MD. Survival pattern of colorectal cancer in Sub-Saharan Africa: A systematic review and meta-analysis. Cancer Epidemiol 2022; 81:102276. [PMID: 36257176 DOI: 10.1016/j.canep.2022.102276] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 10/01/2022] [Accepted: 10/04/2022] [Indexed: 12/03/2022]
Abstract
Cancer incidence is relatively low in sub-Saharan Africa (SSA), however, prognosis is expected to be poor in comparison with high-income countries. Comprehensive evidence is limited on the survival pattern of colorectal cancer patients in the region. We conducted a systematic review and meta-analysis to investigate the pattern of colorectal cancer survival in the region and to identify variation across countries and over time. We searched international databases MEDLINE, Scopus, Embase, Web of Science, ProQuest, CINAHL, and Google Scholar to retrieve studies that estimated survival from colorectal cancer in SSA countries from inception to December 31, 2021 without language restriction. Due to between-study heterogeneity, we performed a random-effects meta-analysis to pool survival rates. To identify study-level sources of variation, we performed subgroup analysis and meta-regression. Results are reported in line with the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) 2020 guideline and the protocol was registered in PROSPERO database (CRD42021246935). 23 studies involving 10,031 patients were included in the review, of which, 20 were included in the meta-analysis. The meta-analysis results showed that the pooled 1-, 2-, 3-, 4-, and 5-year survival rates in SSA were 0.74 (95% CI, 0.66-0.81), 0.50 (95% CI, 0.41-0.58), 0.36 (95% CI, 0.27-0.47), 0.31 (95% CI, 0.22-0.42), and 0.28 (95% CI, 0.19-0.38) respectively. Subgroup analyses indicated that the survival rate varied according to year of study, in which those conducted in recent decades showed relatively better survival. The 5-year survival was higher in middle-income SSA countries (0.31; 95%CI: 0.17-0.49) than low-income countries (0.20; 95%CI: 0.11-0.35), however, the difference was not statistically significant. In conclusion, survival from colorectal cancer is low in sub-Saharan Africa compared to other regions. Thus, intervention strategies to improve screening, early diagnosis and treatment of colorectal cancer should be developed and implemented to improve survival in the region.
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Affiliation(s)
- Hamid Y Hassen
- Department of Family Medicine and Population Health, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp 2610, Belgium.
| | - Foziya M Hussien
- School of Public Health, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Anissa M Hassen
- School of Public Health, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Reta Dewau
- School of Public Health, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Erkihun T Amsalu
- School of Public Health, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia
| | - Miteku A Limenih
- Department of Family Medicine and Population Health, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp 2610, Belgium
| | - Neamin M Berhe
- Department of Family Medicine and Population Health, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp 2610, Belgium
| | - Nigussie A Kassaw
- School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Binyam G Sisay
- School of Public Health, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Md Dilshad Manzar
- Department of Nursing, College of Applied Medical Sciences, Majmaah University, Al Majmaah, Saudi Arabia
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5
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Mumuni AN, Hasford F, Udeme NI, Dada MO, Awojoyogbe BO. A SWOT analysis of artificial intelligence in diagnostic imaging in the developing world: making a case for a paradigm shift. PHYSICAL SCIENCES REVIEWS 2022. [DOI: 10.1515/psr-2022-0121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Abstract
Diagnostic imaging (DI) refers to techniques and methods of creating images of the body’s internal parts and organs with or without the use of ionizing radiation, for purposes of diagnosing, monitoring and characterizing diseases. By default, DI equipment are technology based and in recent times, there has been widespread automation of DI operations in high-income countries while low and middle-income countries (LMICs) are yet to gain traction in automated DI. Advanced DI techniques employ artificial intelligence (AI) protocols to enable imaging equipment perceive data more accurately than humans do, and yet automatically or under expert evaluation, make clinical decisions such as diagnosis and characterization of diseases. In this narrative review, SWOT analysis is used to examine the strengths, weaknesses, opportunities and threats associated with the deployment of AI-based DI protocols in LMICs. Drawing from this analysis, a case is then made to justify the need for widespread AI applications in DI in resource-poor settings. Among other strengths discussed, AI-based DI systems could enhance accuracies in diagnosis, monitoring, characterization of diseases and offer efficient image acquisition, processing, segmentation and analysis procedures, but may have weaknesses regarding the need for big data, huge initial and maintenance costs, and inadequate technical expertise of professionals. They present opportunities for synthetic modality transfer, increased access to imaging services, and protocol optimization; and threats of input training data biases, lack of regulatory frameworks and perceived fear of job losses among DI professionals. The analysis showed that successful integration of AI in DI procedures could position LMICs towards achievement of universal health coverage by 2030/2035. LMICs will however have to learn from the experiences of advanced settings, train critical staff in relevant areas of AI and proceed to develop in-house AI systems with all relevant stakeholders onboard.
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Affiliation(s)
| | - Francis Hasford
- Department of Medical Physics , University of Ghana, Ghana Atomic Energy Commission , Accra , Ghana
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Chu KM, Bust L, Forgan T. Colorectal Surgery Practice, Training, and Research in Low-Resource Settings. Clin Colon Rectal Surg 2022; 35:410-416. [PMID: 36111082 PMCID: PMC9470283 DOI: 10.1055/s-0042-1746190] [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: 11/03/2022]
Abstract
Colorectal surgery (CRS) practice, training, and research differ between low- and middle-income countries (LMICs) and high-income countries due to disparity in resources. LMIC CRS is primarily done by general surgeons due to the paucity of fully trained colorectal surgeons. The majority of colon and rectal resections are done using open techniques, and laparoscopy and robotic platforms are only available in select private or academic centers. Multi-disciplinary teams are not available in most hospitals, so surgeons must have a broad knowledge base, and learn to adapt their practice. Formal CRS training opportunities through accredited post-residency fellowships and professional colorectal surgical associations are limited in LMICs. CRS is less established as an academic field, and less data are generated in LMICs. There are fewer staff and less dedicated funding for CRS research. However, LMIC colorectal surgeons and researchers can contribute valuable clinical findings especially on conditions of higher prevalence in their settings such as anal squamous cell carcinoma and obstetric fistulas. Effective surgical care for colorectal conditions requires significant investment in infrastructure, training, and governance in LMICs. This is critical to improve access to safe surgical care for all.
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Affiliation(s)
- Kathryn M. Chu
- Centre for Global Surgery, Department of Global Health, Faculty of Medicine and Health Sciences, Francie van Zijl Drive Stellenbosch University, Tygerberg, South Africa
- Department of Surgery, University of Botswana, Gaborone, Botswana
| | - Lynn Bust
- Centre for Global Surgery, Department of Global Health, Faculty of Medicine and Health Sciences, Francie van Zijl Drive Stellenbosch University, Tygerberg, South Africa
| | - Tim Forgan
- Department of Surgical Sciences, Faculty of Medicine and Health Sciences, Francie van Zijl Drive Stellenbosch University, Tygerberg, South Africa
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7
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Boatman S, Nalluri H, Gaertner WB. Colon and Rectal Cancer Management in Low-Resource Settings. Clin Colon Rectal Surg 2022; 35:402-409. [PMID: 36111080 PMCID: PMC9470288 DOI: 10.1055/s-0042-1746189] [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: 12/09/2022]
Abstract
Colorectal cancer (CRC) incidence is rising in low- and middle-income countries, which also face disproportionate mortality from CRC, mainly due to diagnosis at late stages. Various challenges to CRC care exist at multiple societal levels in underserved populations. In this article, barriers to CRC care, strategies for screening, and treatment in resource-limited settings, and future directions are discussed within a global context.
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Affiliation(s)
- Sonja Boatman
- Division of Colon and Rectal Surgery, Department of Surgery, University of Minnesota, Minneapolis, Minnesota
| | - Harika Nalluri
- Division of Colon and Rectal Surgery, Department of Surgery, University of Minnesota, Minneapolis, Minnesota
| | - Wolfgang B. Gaertner
- Division of Colon and Rectal Surgery, Department of Surgery, University of Minnesota, Minneapolis, Minnesota
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8
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Ntaganda E, Ssebuufu R, Bacon DR, Daniel TM. Teaching Thoracic Surgery in a Low-Resource Setting:: Creation of a Simulation Curriculum in Rwanda. Thorac Surg Clin 2022; 32:279-287. [PMID: 35961736 DOI: 10.1016/j.thorsurg.2022.05.001] [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: 10/15/2022]
Abstract
Surgical education and global health partnerships have evolved over the years. There is growing recognition of the importance of in-country training of surgeons and surgeon specialists in low-resource settings to support the local health care system. There are numerous ways in which high-income partners can support local training programs. The Human Resources for Health program was initiated in 2012 to advance in-country training of health care professionals in Rwanda. As there was a limited in-country operative experience for teaching general thoracic surgery, simulation models were developed, influenced by a prior course developed for American cardiothoracic trainees. Local Rwandan faculty were engaged. Adaptations from the American version included constructing models from inexpensive materials to make the simulation more feasible in the Rwanda setting.
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Affiliation(s)
- Edmond Ntaganda
- Consultant Pediatric Surgeon, Centre Hospitalier Universitaire de Kigali (CHUK), KN 4th Avenue, Kigali City, P.O. Box 655, Kigali, Rwanda; Loma Linda University School of Medicine, San Bernando, California, USA
| | - Robinson Ssebuufu
- Uganda Medical and Dental Practitioners Council (UMDPC), P.O. Box 1594, Kampala, Uganda
| | - Daniel R Bacon
- Department of Surgery, The Ohio State University School of Medicine, Columbus, OH, USA
| | - Thomas M Daniel
- Department of Surgery, University of Virginia School of Medicine, P.O. Box 800709, Charlottesville, VA 22908, USA.
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Waljee AK, Weinheimer-Haus EM, Abubakar A, Ngugi AK, Siwo GH, Kwakye G, Singal AG, Rao A, Saini SD, Read AJ, Baker JA, Balis U, Opio CK, Zhu J, Saleh MN. Artificial intelligence and machine learning for early detection and diagnosis of colorectal cancer in sub-Saharan Africa. Gut 2022; 71:1259-1265. [PMID: 35418482 PMCID: PMC9177787 DOI: 10.1136/gutjnl-2022-327211] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 03/17/2022] [Indexed: 01/05/2023]
Affiliation(s)
- Akbar K Waljee
- Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan, USA .,Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, Michigan, USA.,Center for Global Health Equity, University of Michigan, Ann Arbor, Michigan, USA.,Michigan Integrated Center for Health Analytics and Medical Prediction (MiCHAMP), University of Michigan, Ann Arbor, Michigan, USA
| | - Eileen M Weinheimer-Haus
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, Michigan, USA,Center for Global Health Equity, University of Michigan, Ann Arbor, Michigan, USA,Michigan Integrated Center for Health Analytics and Medical Prediction (MiCHAMP), University of Michigan, Ann Arbor, Michigan, USA
| | - Amina Abubakar
- Institute for Human Development, The Aga Khan University, Nairobi, Kenya
| | - Anthony K Ngugi
- Department of Population Health, The Aga Khan University, Nairobi, Kenya
| | - Geoffrey H Siwo
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, Michigan, USA,Center for Global Health Equity, University of Michigan, Ann Arbor, Michigan, USA,Eck Institute for Global Health, University of Notre Dame, South Bend, Indiana, USA,Center for Research Computing, University of Notre Dame, South Bend, Indiana, USA
| | - Gifty Kwakye
- Department of Surgery, Division of Colorectal Surgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Amit G Singal
- Harold C. Simmons Comprehensive Cancer Center, The University of Texas Southwestern Medical Center, Dallas, Texas, USA,Department of Internal Medicine, Division of Digestive and Liver Diseases, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Arvind Rao
- Michigan Integrated Center for Health Analytics and Medical Prediction (MiCHAMP), University of Michigan, Ann Arbor, Michigan, USA,Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA,Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA,Department of Radiation Oncology, University of Michigan, Ann Arbor, Michigan, USA
| | - Sameer D Saini
- Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan, USA,Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, Michigan, USA
| | - Andrew J Read
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, Michigan, USA,Michigan Integrated Center for Health Analytics and Medical Prediction (MiCHAMP), University of Michigan, Ann Arbor, Michigan, USA
| | - Jessica A Baker
- Veterans Affairs Center for Clinical Management Research, Ann Arbor, Michigan, USA,Center for Global Health Equity, University of Michigan, Ann Arbor, Michigan, USA,Michigan Integrated Center for Health Analytics and Medical Prediction (MiCHAMP), University of Michigan, Ann Arbor, Michigan, USA
| | - Ulysses Balis
- Department of Pathology, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Christopher K Opio
- Department of Medicine, Aga Khan University Hospital Nairobi, Nairobi, Kenya
| | - Ji Zhu
- Center for Global Health Equity, University of Michigan, Ann Arbor, Michigan, USA,Michigan Integrated Center for Health Analytics and Medical Prediction (MiCHAMP), University of Michigan, Ann Arbor, Michigan, USA,Department of Statistics, University of Michigan, Ann Arbor, Michigan, USA
| | - Mansoor N Saleh
- O'Neal Comprehensive Cancer Center, The University of Alabama at Birmingham, Birmingham, Alabama, USA,Department of Hematology-Oncology, Aga Khan University Hospital Nairobi, Nairobi, Kenya
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10
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Wismayer R, Kiwanuka J, Wabinga H, Odida M. Prognostic Factors for Survival of Colorectal Adenocarcinoma Patients in Uganda. Cancer Manag Res 2022; 14:875-893. [PMID: 35250313 PMCID: PMC8896376 DOI: 10.2147/cmar.s354360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/18/2022] [Indexed: 11/24/2022] Open
Abstract
Background In Uganda, similar to other countries in East Africa, the incidence of colorectal cancer (CRC) has been steadily increasing. This increase in incidence is accompanied by a poor prognosis. There is limited knowledge on factors responsible for the poor outcome of patients with CRC in Uganda. Cancer survival analysis is one way of determining some of these prognostic factors. The aim of this study was to determine prognostic factors associated with CRC survival in Ugandan patients. Methods This was a retroprospective cohort study involving patients with linked data in the Kampala cancer registry and medical records from hospitals in Uganda. Participants with a diagnosis of colorectal adenocarcinoma between 1st January 2008 and 31st December 2018 were included. Variables included patients’ demographic data, grade, stage and location of CRC, data on whether a patient was operated on, type of operation, treatment modalities and date of diagnosis. Our outcome variable was time to death after diagnosis. We computed and compared survival using the Log rank test and used Cox proportional hazards regression to determine factors associated with survival. Results A total of 247 patients were included in the study with a mean (SD) age of 53.3 (15.7) years and a female: male ratio of 1.14:1. The proportions of patients surviving at 1, 2 and 3 years were 65.2% (95% CI: 58.8–70.9), 42.0% (95% CI:35.6–48.3) and 33.3% (95% CI:27.3–39.4) respectively. In multivariate analysis, factors associated with increased mortality included clinical stage II (aHR = 2.44, 95% CI: 1.10–5.41, p=0.028), stage III (aHR=2.65, 95% CI: 1.31–5.39, p=0.007) and stage IV (aHR=5.47, 95% CI: 2.40–12.48, p<0.001). Curative surgery alone (aHR=0.63, 95% CI: 0.39–1.01, p=0.057) and curative surgery with chemotherapy (aHR=0.53, 95% CI: 0.32–0.88, p=0.015) were associated with a better survival. Conclusion The survival rate among CRC patients in Uganda is low. Advanced stage CRC accelerates mortality, while surgery alone or in combination with chemotherapy improves survival. Implementation of national screening programmes for early diagnosis of CRC and increasing surgery and oncology infrastructure is recommended to improve the CRC survival rate in the Ugandan population.
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Affiliation(s)
- Richard Wismayer
- Department of Surgery, Masaka Regional Referral Hospital, Masaka, Uganda
- Department of Surgery, Faculty of Health Sciences, Habib Medical School, IUIU University, Kampala, Uganda
- Department of Pathology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
- Correspondence: Richard Wismayer, Email ;
| | - Julius Kiwanuka
- Department of Epidemiology and Biostatistics, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Henry Wabinga
- Department of Pathology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Michael Odida
- Department of Pathology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
- Department of Pathology, Faculty of Medicine, Gulu University, Gulu, Uganda
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11
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Gullickson C, Goodman M, Joko-Fru YW, Gnangnon FHR, N'Da G, Woldegeorgis MA, Buziba NG, Karugu C, Manraj SS, Lorenzoni CF, Hansen R, Finesse A, Somdyala NIM, Bukirwa P, Chingonzoh T, Chokunonga E, Liu B, Kantelhardt E, Parkin DM, Jemal A. Colorectal cancer survival in sub-Saharan Africa by age, stage at diagnosis and Human Development Index: A population-based registry study. Int J Cancer 2021; 149:1553-1563. [PMID: 34164808 DOI: 10.1002/ijc.33715] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/06/2021] [Accepted: 06/08/2021] [Indexed: 02/05/2023]
Abstract
There are limited population-based survival data for colorectal cancer (CRC) in sub-Saharan Africa. Here, 1707 persons diagnosed with CRC from 2005 to 2015 were randomly selected from 13 population-based cancer registries operating in 11 countries in sub-Saharan Africa. Vital status was ascertained from medical charts or through next of kin. 1-, 3- and 5-year overall and relative survival rates for all registries and for each registry were calculated using the Kaplan-Meier estimator. Multivariable analysis was used to examine the associations of 5-year relative survival with age at diagnosis, stage and country-level Human Development Index (HDI). Observed survival for 1448 patients with CRC across all registries combined was 72.0% (95% CI 69.5-74.4%) at 1 year, 50.4% (95% CI 47.6-53.2%) at 3 years and 43.5% (95% CI 40.6-46.3%) at 5 years. We estimate that relative survival at 5 years in these registry populations is 48.2%. Factors associated with poorer survival included living in a country with lower HDI, late stage at diagnosis and younger or older age at diagnosis (<50 or ≥70 years). For example, the risk of death was 1.6 (95% CI 1.2-2.1) times higher for patients residing in medium-HDI and 2.7 (95% CI 2.2-3.4) times higher for patients residing in low-HDI compared to those residing in high-HDI countries. Survival for CRC remains low in sub-Saharan African countries, though estimates vary considerably by HDI. Strengthening health systems to ensure access to prevention, early diagnosis and appropriate treatment is critical in improving outcomes of CRC in the region.
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Affiliation(s)
- Cricket Gullickson
- Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
- Emory University School of Medicine, Atlanta, Georgia, USA
| | - Michael Goodman
- Rollins School of Public Health, Emory University, Atlanta, Georgia, USA
| | - Yvonne W Joko-Fru
- The African Cancer Registry Network, INCTR African Registry Programme, Oxford, UK
- Nuffield Department of Population Health, University of Oxford, Oxford, UK
| | | | - Guy N'Da
- Abidjan Cancer Registry, Abidjan, Côte d'Ivoire
| | | | | | | | - Shyam S Manraj
- Mauritius National Cancer Registry, Port Louis, Mauritius
| | | | | | - Anne Finesse
- Seychelles National Cancer Registry, Victoria, Seychelles
| | | | | | | | | | - Biying Liu
- The African Cancer Registry Network, INCTR African Registry Programme, Oxford, UK
| | - Eva Kantelhardt
- Institute of Medical Epidemiology, Biostatistics and Informatics, Martin Luther University Halle-Wittenberg, Halle, Germany
- Department of Gynaecology, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Donald M Parkin
- The African Cancer Registry Network, INCTR African Registry Programme, Oxford, UK
- Nuffield Department of Population Health, University of Oxford, Oxford, UK
- Cancer Surveillance Unit, International Agency for Research on Cancer, Lyon, France
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Teka MA, Yesuf A, Hussien FM, Hassen HY. Histological characteristics, survival pattern and prognostic determinants among colorectal cancer patients in Ethiopia: A retrospective cohort study. Heliyon 2021; 7:e06366. [PMID: 33718651 PMCID: PMC7920880 DOI: 10.1016/j.heliyon.2021.e06366] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 12/21/2020] [Accepted: 02/22/2021] [Indexed: 02/07/2023] Open
Abstract
Background The incidence of colorectal cancer (CRC) and associated mortality are rising in low- and middle-income countries. In Ethiopia, colorectal cancer is among the leading causes of cancer morbidity and mortality in both sexes. Although some studies provided estimations on the national burden and regional distribution, the histological characteristics, survival pattern and determinants among colorectal cancer patients are not well-documented. Aim This study aimed to describe the histological characteristics, to determine the patterns of survival, and identify factors that determine mortality rate among CRC patients in Ethiopia. Methods A retrospective cohort study was conducted among CRC patients registered at cancer treatment center of Tikur Anbessa Specialized Hospital, from January 2012 to December 2016. Data were extracted from a total of 161 patient medical records using a pretested abstraction form and supplemented by phone calls with the patients/caregivers. To determine colorectal cancer specific survival overtime, we performed a Kaplan-Meier survival analysis and significance of variation in survival across covariates and treatment categories was tested using log-rank test. A multivariable Cox proportional-hazards model was performed to identify determinants of survival after diagnosis with colorectal cancer. Results Overall, the median survival time was 21 months [95%CI: 16-35], with two-, three- and five-year CRC-specific survival rates of 46.8%, 39.5% and 28.7% respectively. In the multivariable Cox regression model, the rate of death due to CRC is significantly higher for patients with elevated baseline carcinoembryonic antigen (CEA) level (Adjusted Hazard Ratio (AHR) = 2.31, 95%CI: 1.27-4.19), stage IV at diagnosis (AHR = 2.66, 95%CI: 1.44-4.91), and mucinous or signet-ring cell carcinoma histology type (AHR = 4.92, 95%CI: 1.75-13.80). Moreover, patients who underwent surgery showed a better survival than those who did not (AHR = 0.35, 95%CI: 0.14-0.88). Conclusion In Ethiopia, patients diagnosed with CRC showed a low rate of cancer-specific survival. Histology type, stage of cancer and CEA level at diagnosis, and the type of treatment a patient received significantly determine mortality rate. Hence, cancer screening programs could help to detect the disease at an earlier stage and to initiate available treatments timely so as to extend the lifespan of CRC patients.
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Affiliation(s)
- Mohammed Ahmed Teka
- Ethiopian Field Epidemiology Training Program, Saint Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Aman Yesuf
- Department of Public Health, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
| | - Foziya Mohammed Hussien
- Department of Public Health Nutrition, School of Public Health, College of Medicine and Health Science, Wollo University, Ethiopia
| | - Hamid Yimam Hassen
- Department of Public Health, Faculty of Medicine and Health Sciences, Mizan Tepi University, Mizan Teferi, Ethiopia
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