What are the predictive factors of caecal perforation in patients with obstructing distal colon cancer?

2018 ◽  
Vol 20 (8) ◽  
pp. 688-695 ◽  
Author(s):  
C. Sabbagh ◽  
N. Siembida ◽  
T. Yzet ◽  
B. Robert ◽  
C. Chivot ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Predictive Factors ◽  
Distal Colon ◽  
Caecal Perforation

Prediction of Recurrence in Patients with Stage III Colon Cancer Using Conventional Clinicopathological Factors and Peripheral Blood Test Data: A New Analysis with Artificial Intelligence

Oncology ◽  
2021 ◽  
Vol 99 (5) ◽  
pp. 318-326
Author(s):  
Yutaro Kamei ◽  
Tetsuro Takayama ◽  
Toshiyuki Suzuki ◽  
Kenichi Furihata ◽  
Megumi Otsuki ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Colon Cancer ◽  
Serum Albumin ◽  
Test Data ◽  
Predictive Factors ◽  
Blood Test ◽  
Stage Iii ◽  
Clinicopathological Factors ◽  
Stage Iii Colon Cancer ◽  
Staging Systems

Background: Survival rate may be predicted by tumor-node-metastasis staging systems in colon cancer. In clinical practice, about 20 to 30 clinicopathological factors and blood test data have been used. Various predictive factors for recurrence have been advocated; however, the interactions are complex and remain to be established. We used artificial intelligence (AI) to examine predictive factors related to recurrence. Methods: The study group comprised 217 patients who underwent curative surgery for stage III colon cancer. Using a self-organizing map (SOM), an AI-based method, patients with only 23 clinicopathological factors, patients with 23 clinicopathological factors and 34 of preoperative blood test data (pre-data), and those with 23 clinicopathological factors and 31 of postoperative blood test data (post-data) were classified into several clusters with various rates of recurrence. Results: When only clinicopathological factors were used, the percentage of T4b disease, the percentage of N2 disease, and the number of metastatic lymph nodes were significantly higher in a cluster with a higher rate of recurrence. When clinicopathological factors and pre-data were used, three described pathological factors and the serum C-reactive protein (CRP) levels were significantly higher and the serum total protein (TP) levels, serum albumin levels, and the percentage of lymphocytes were significantly lower in a cluster with a higher rate of recurrence. When clinicopathological factors and post-data were used, three described pathological factors, serum CRP levels, and serum carcinoembryonic antigen levels were significantly higher and serum TP levels, serum albumin levels, and the percentage of lymphocytes were significantly lower in a cluster with a higher rate of recurrence. Conclusions: This AI-based analysis extracted several risk factors for recurrence from more than 50 pathological and blood test factors before and after surgery separately. This analysis may predict the risk of recurrence of a new patient by confirming which clusters this patient belongs to.

scholarly journals Subsite-Specific Dietary Risk Factors for Colorectal Cancer: A Review of Cohort Studies

2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Anette Hjartåker ◽  
Bjarte Aagnes ◽  
Trude Eid Robsahm ◽  
Hilde Langseth ◽  
Freddie Bray ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Risk Factors ◽  
Rectal Cancer ◽  
Colon Cancer ◽  
Cohort Studies ◽  
Distal Colon ◽  
Proximal Colon ◽  
Risk Estimates ◽  
Specific Risk ◽  
Dietary Components

Objective. A shift in the total incidence from left- to right-sided colon cancer has been reported and raises the question as to whether lifestyle risk factors are responsible for the changing subsite distribution of colon cancer. The present study provides a review of the subsite-specific risk estimates for the dietary components presently regarded as convincing or probable risk factors for colorectal cancer: red meat, processed meat, fiber, garlic, milk, calcium, and alcohol.Methods. Studies were identified by searching PubMed through October 8, 2012 and by reviewing reference lists. Thirty-two prospective cohort studies are included, and the estimates are compared by sex for each risk factor.Results. For alcohol, there seems to be a stronger association with rectal cancer than with colon cancer, and for meat a somewhat stronger association with distal colon and rectal cancer, relative to proximal colon cancer. For fiber, milk, and calcium, there were only minor differences in relative risk across subsites. No statement could be given regarding garlic. Overall, many of the subsite-specific risk estimates were nonsignificant, irrespective of exposure.Conclusion. For some dietary components the associations with risk of cancer of the rectum and distal colon appear stronger than for proximal colon, but not for all.

scholarly journals Evaluation of an aldo-keto reductase gene signature with prognostic significance in colon cancer via activation of epithelial to mesenchymal transition and the p70S6K pathway

2020 ◽  
Vol 41 (9) ◽  
pp. 1219-1228
Author(s):  
Seçil Demirkol Canlı ◽  
Esin Gülce Seza ◽  
Ilir Sheraj ◽  
Ismail Gömçeli ◽  
Nesrin Turhan ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Metabolic Pathways ◽  
Epithelial To Mesenchymal Transition ◽  
Ex Vivo ◽  
Prognostic Significance ◽  
Distal Colon ◽  
Polyol Pathway ◽  
Gene Signature ◽  
Nutrient Sensing ◽  
Mesenchymal Transition

Abstract AKR1B1 and AKR1B10, members of the aldo-keto reductase family of enzymes that participate in the polyol pathway of aldehyde metabolism, are aberrantly expressed in colon cancer. We previously showed that high expression of AKR1B1 (AKR1B1HIGH) was associated with enhanced motility, inflammation and poor clinical outcome in colon cancer patients. Using publicly available datasets and ex vivo gene expression analysis (n = 51, Ankara cohort), we have validated our previous in silico finding that AKR1B1HIGH was associated with worse overall survival (OS) compared with patients with low expression of AKR1B1 (AKR1B1LOW) samples. A combined signature of AKR1B1HIGH and AKR1B10LOW was significantly associated with worse recurrence-free survival (RFS) in microsatellite stable (MSS) patients and in patients with distal colon tumors as well as a higher mesenchymal signature when compared with AKR1B1LOW/AKR1B10HIGH tumors. When the patients were stratified according to consensus molecular subtypes (CMS), AKR1B1HIGH/AKR1B10LOW samples were primarily classified as CMS4 with predominantly mesenchymal characteristics while AKR1B1LOW/AKR1B10HIGH samples were primarily classified as CMS3 which is associated with metabolic deregulation. Reverse Phase Protein Array carried out using protein samples from the Ankara cohort indicated that AKR1B1HIGH/AKR1B10LOW tumors showed aberrant activation of metabolic pathways. Western blot analysis of AKR1B1HIGH/AKR1B10LOW colon cancer cell lines also suggested aberrant activation of nutrient-sensing pathways. Collectively, our data suggest that the AKR1B1HIGH/AKR1B10LOW signature may be predictive of poor prognosis, aberrant activation of metabolic pathways, and can be considered as a novel biomarker for colon cancer prognostication.

Dietary fiber intake and risks of proximal and distal colon cancers: A systematic review and meta-analysis.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. e15080-e15080 ◽  
Author(s):  
Yu Ma ◽  
Peilin Huang ◽  
Mingyue Hu ◽  
Sunkai Ling ◽  
Yuan Li ◽  
...  
Keyword(s):  
Systematic Review ◽  
Colon Cancer ◽  
Cohort Studies ◽  
Dietary Fiber ◽  
Meta Analysis ◽  
Distal Colon ◽  
Proximal Colon ◽  
Fiber Intake ◽  
Dietary Fiber Intake ◽  
Colon Cancers

e15080 Background: Epidemiological studies have suggested that intake of dietary fiber is associated with decreased risk of colon cancer, however, these findings are inconsistent in that dietary fiber intake is differentially associated with risks of proximal colon and distal colon cancers. To address this, we conducted a systematic review and meta-analysis. Methods: Pubmed database were searched to identify relevant cohort studies up to December 2016 to examine the association between dietary fiber and risks of proximal colon and distal colon cancers, respectively. A random-effects model was used to compute summary risk estimates. Results: 11 prospective cohort studies were identified and included in the analysis. We observed that the risk of proximal colon cancer was 14% lower among the highest dietary fiber intake compared with the lowest intake (RR = 0.86, 95% confidence interval [CI] = 0.78 to 0.95). A similar result was also found for distal colon cancer (RR = 0.79, 95% CI = 0.71 to 0.87). Conclusions: In current analysis, we show that dietary fiber intake is associated inversely with risks of both proximal and distal colon cancers.

Inequality trends in proximal and distal colon cancers.

2017 ◽  
Vol 35 (4_suppl) ◽  
pp. 565-565
Author(s):  
Daniel David Bodek ◽  
Pavan Patel
Keyword(s):  
Colon Cancer ◽  
Survival Data ◽  
Rate Ratio ◽  
Screening Method ◽  
Relative Survival ◽  
Distal Colon ◽  
Poverty Line ◽  
Annual Percent Change ◽  
Screening Guidelines ◽  
Model Average

565 Background: Recently, the USPHTF released new colon cancer screening guidelines. No priority was given to any screening method. Given studies showing that Blacks had a greater proportion of proximal cancers, we sought to better highlight the inequalities in outcomes in order to consider the appropriateness of sigmoidoscopies versus colonoscopies. Methods: The SEER database was utilized to pull incidence and 5 year relative survival data (1992-2013). Patients aged 50-84 were divided by race and percentage of a county’s population below the poverty line ( < or > 15%). Adenocarcinomas were divided between distal cancer in the sigmoid, rectum, and anus versus cancer in the remainder of the colon. This data was analyzed using HDCalc, modelling rate difference, rate ratio, and the Index of Disparity. The Joinpoint regression program was then used to model Average Annual Percent Change (AAPC). Results: The AAPC in distal cancer incidence among Whites (-3.2%, [95% CI = -3.5%, -2.8%], p < 0.05) was greater than in Hispanics (-1.6%, [95% Cl = -2.1%, -1.1%], p < 0.05), or Blacks (-2.3%, [95% CI = -2.9%, -1.8%], p < 0.05). This resulted in a decline in the Index of Disparity (AAPC: -6.6, [95% Cl: -9.1, -4.0], p < 0.05) largely due to Whites' greater gains relative to Hispanics (Rate Ratio AAPC: -1.6%, [95% Cl: -1.9%, -1.3%], p < 0.05). Less impressive were AAPC trends in proximal cancers, which were significant in Whites (-1.8%, [95% CI: -2.2%, -1.5%], p < 0.05) and Blacks (-1.3%, [95% Cl: -1.8%, -0.8%], p < 0.05). Additionally, the AAPC for proximal cancer’s Index of Disparity was also lower (-3.1%, [95% Cl: -3.8%, -2.4%], p < 0.05). In terms of survival, only distal cancer’s AAPC for its Index of Disparity was significant (-3%, (95% Cl: -5%, -1.1%), p < 0.05). Poorer counties performed worse in incidence reduction across races but similarly in survival improvements. Conclusions: While it is encouraging to see improvements in distal colon cancer outcomes, it is troubling to see that measures in proximal cancers are lagging behind. The slower improvements among the Black population and higher baseline mortality and incidence of such cancers would seem to indicate a need to further study the comparative value of more aggressive screening, particularly in this group.

scholarly journals A novel model of distal colon cancer in athymic mice

2012 ◽  
Vol 27 (6) ◽  
pp. 355-360 ◽  
Author(s):  
Denise Gonçalves Priolli ◽  
Ana Margarida Abrantes ◽  
Silvia Neves ◽  
Joana Neves Batista ◽  
Izilda Aparecida Cardinalli ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Molecular Imaging ◽  
Distal Colon ◽  
Athymic Mice ◽  
Proposed Model ◽  
Adenocarcinoma Cells ◽  
Poorly Differentiated ◽  
99Mtc Mibi ◽  
Novel Model

PURPOSE: The present a novel adenocarcinoma model in athymic mice. METHODS: Seven athymic mice were used. Colon diversion and distal fistula were made. Adenocarcinoma cells were inoculated in the submucosa of fistula. Tumor growth was monitored daily. Scintigraphy with 99mTc-MIBI was performed to identify the tumor. RESULTS: The model of distal colon cancer is feasible. Tumor detection was possible by both, macroscopically and molecular imaging. All resections demonstrated poorly differentiated tumors. Colon obstruction occurred in one case, similarly to evolution in human tumors of distal colon. CONCLUSION: The proposed model of distal colon cancer is feasible, allows for easy monitoring of tumoral growth by both, macroscopically and molecular imaging, and is suitable for studying the evolution of tumor with implementation of cytotoxic therapy in vivo.

Limited time Interval between Symptomatic Presentation in Primary Care and Colorectal Cancer Diagnosis

2021 ◽  
Author(s):  
Josephina G. Kuiper ◽  
Myrthe P.P. Herk-Sukel ◽  
Valery E.P.P. Lemmens ◽  
Ernst J. Kuipers ◽  
Ron M.C. Herings
Keyword(s):  
Colorectal Cancer ◽  
Rectal Cancer ◽  
Colon Cancer ◽  
Cancer Diagnosis ◽  
Drug Users ◽  
Index Date ◽  
Distal Colon ◽  
Proximal Colon ◽  
New Drugs ◽  
Time Interval

Abstract Background: Timely recognition of colorectal cancer related symptoms is essential to reduce time to diagnosis. This study aims to investigate the primary healthcare use preceding a colorectal cancer diagnosis.Methods: A population-based case-control study was conducted using data from a cohort of linked data from the Netherlands Cancer Registry (NCR) and the PHARMO General Practitioner (GP) Database (NCR-PHARMO GP cohort). Primary healthcare use among colorectal cancer cases before diagnosis was compared with matched cancer-free controls. Information on primary health care use was derived from the GP Database of the PHARMO Database Network and included all GP consultations and prescribed medication. Mean monthly number of GP consultations and new drugs users was assessed in the year before index date (diagnosis date for cases). Results were stratified by colorectal cancer site: proximal colon cancer, distal colon cancer and rectal cancer.Results: While mean monthly number of GP consultation were stable through the year among cancer-free controls, a statistical significant increase was seen among colorectal cancer cases in the last 4-8 months before diagnosis. Proximal colon cancer cases showed the longest time interval of increased mean monthly number of GP consultations. This increase was largely driven by a consultation for malignant neoplasm colon/rectum. The number of new drug users was stable around 120 per 1,000 persons per month until 8 months before index date for proximal colon cancer cases, 4 months before index date for distal colon cancer cases and 3 months for rectal cancer cases. This increase was mainly driven by the prescription of laxatives drugs.Conclusion: A relatively short time interval of increased GP consultations and new drug users was seen before colorectal cancer diagnosis. The longest period of increased GP consultations and new drugs users was seen among patients diagnosed with proximal colon cancer. This can be explained by the difficultly to diagnose proximal colon cancer given the more subtle signs compared to distal colon cancer and rectal cancer. Therefore, faster diagnosis for this specific tumour subtype is only possible when clear clinical signs and symptoms are present.

Actual problems of treatment of distal colon cancer

2020 ◽  
Vol 15 (3) ◽  
pp. 152-157
Author(s):  
A.A. Pomazkov ◽  
M.F. CHerkasov ◽  
M.A. Utemishev ◽  
E.V. Andreev ◽  
A.Yu. Hindikajnen ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Distal Colon

scholarly journals Dietary patterns and colorectal cancer in a Japanese population: The Fukuoka Colorectal Cancer Study

2010 ◽  
Vol 104 (11) ◽  
pp. 1703-1711 ◽  
Author(s):  
Kayo Kurotani ◽  
Sanjeev Budhathoki ◽  
Amit Man Joshi ◽  
Guang Yin ◽  
Kengo Toyomura ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Colon Cancer ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Case Control Study ◽  
Distal Colon ◽  
Case Control ◽  
High Fat ◽  
Cancer Study ◽  
Control Study

Few studies have addressed the relation between dietary patterns and colorectal cancer in Japan. We investigated dietary patterns in relation to colorectal cancer risk in a community-based case–control study. The association with dietary patterns was also examined for different sites of colorectal cancer. Data were derived from the Fukuoka Colorectal Cancer Study, including 800 cases and 775 controls interviewed from September 2000 to December 2003. The cases were admitted to one of the participating hospitals for the first surgical treatment during this period. We identified dietary patterns using principal component analysis of intakes of twenty-nine items of food groups and specific foods. Quartile categories of each dietary pattern were used, and non-dietary lifestyle factors and total energy intake were adjusted for in the analysis. We identified three dietary patterns: prudent, high-fat and light-meal patterns. The prudent dietary pattern characterised by high intakes of vegetables, fruits, seafoods and soya foods showed a nearly significant protective association with the overall risk of colorectal cancer (trend P = 0·054), and it was statistically significantly related to a decreased risk of distal colon cancer (trend P = 0·002), but not to that of either proximal colon or rectal cancer. The high-fat and light-meal dietary patterns were not materially related to the overall or site-specific risk of colorectal cancer. In summary, a prudent dietary pattern was associated with a decreased risk of colorectal cancer, especially with that of distal colon cancer, in a fairly large case–control study in Japan.

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