Colorectal Cancer in Jordan: Survival Rate and Its Related Factors (original) (raw)
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First national survival data for colorectal cancer among Saudis between 1994 and 2004: what's next?
2013
Background: Colorectal cancer (CRC) is the second most common malignancy in the Saudi population. This study aimed to review CRC data from the Saudi Cancer Registry (SCR) in order to evaluate the prognostic factors for CRC survival in Saudi patients. Methods: This study was a retrospective censored overall survival (OS) analysis of CRC data for the period 1994-2004 obtained from the SCR. Data were collected from all 13 administrative regions of the Kingdom of Saudi Arabia (KSA) by the SCR in collaboration with the National Information Center of the Ministry of Interior. The Kaplan-Meier method was used to calculate the cumulative survival rate, which was then stratified by gender and by period (1994-1999 versus 2000-2004). The clinico-pathological variables that might affect CRC survival were analyzed by Cox regression analysis. Results: Between 1994 and 2004, 549 CRC cases were diagnosed (363 [66.1%] in males and 186 [33.9%] in females). The OS for CRC during this period was 44.6% (44.7% for 1994-1999 and 44.3% for 2000-2004 [p=0.7]). There was a significant (p=0.003) discrepancy of 9.6% between the male five-year OS (41.0%) and the female five-year OS (50.6%). The five-year OS was 63.3% for patients with localized disease, 50.2% for those with regional disease, and 14.7% for patients with metastases. By Cox regression analysis, age and extent were significant prognostic factors of survival in patients with colon cancer; the risk was higher in patients with distant metastasis (hazard ratio [HR], 2.53; 95% confidence interval [CI], 1.17-5.45; p=0.01). In patients with rectal cancer, the risk was lower in males (HR, 0.66; CI, p=0.04), but higher in patients with unknown tumor extent (HR, 3.70; 95% CI, 1.66-8.24; p=0.01). Conclusions: The five-year OS for 1994-2004 was 44.6% for patients with CRC. More so, five-year OS based on CRC stage was generally lower than the typically reported survival rates. The establishment of a national screening program and increased access to specialized medical faculties may be necessary to improve CRC survival in the KSA.
Prognostic factors and survival of colorectal cancer in Kurdistan province, Iran
Medicine®, 2017
Colorectal cancer (CRC) survival varies at individual and geographically level. This population-based study aimed to evaluating various factors affecting the survival rate of CRC patients in Kurdistan province. In a retrospective cohort study, patients diagnosed as CRC were collected through a population-based study from March 1, 2009 to 2014. The data were collected from Kurdistan's Cancer Registry database. Additional information and missing data were collected reference to patients' homes, medical records, and pathology reports. The CRC survival was calculated from the date of diagnosis to the date of cancer-specific death or the end of follow-up (cutoff date: October 2015). Kaplan–Meier method and log-rank test were used for the univariate analysis of survival in various subgroups. The proportional-hazard model Cox was also used in order to consider the effects of different factors on survival including age at diagnosis, place of residence, marital status, occupation, level of education, smoking, economic status, comorbidity, tumor stage, and tumor grade. A total number of 335 patients affected by CRC were assessed and the results showed that 1-and 5-year survival rate were 87% and 33%, respectively. According to the results of Cox's multivariate analysis, the following factors were significantly related to CRC survival: age at diagnosis (≥65 years old) (HR 2.08, 95% CI: 1.17–3.71), single patients (HR 1.62, 95% CI: 1.10–2.40), job (worker) (HR 2.09, 95% CI: 1.22–3.58), educational level: diploma or below (HR 0.61, 95% CI: 0.39–0.92), wealthy economic status (HR 0.51, 95% CI: 0.31–0.82), tumor grade in poorly differentiated (HR 2.25, 95% CI: 1.37–3.69), and undifferentiated/anaplastic grade (HR 2.90, 95% CI: 1.67–4.98). We found that factors such as low education, inappropriate socioeconomic status, and high tumor grade at the time of disease diagnosis were effective in the poor survival of CRC patients in Kurdistan province; this, which need more attention. Abbreviations: CI = confidence intervals, CRC = colorectal cancer, HR = hazard ratio, TNM = tumor node metastasis.
Clinicopathological pattern of colorectal cancer in the United Arab Emirates
Saudi medical journal, 2003
The aim of this study is to define the epidemiology of the colorectal cancer in the United Arab Emirates and compare it with the other Gulf States and developed countries. This study is a retrospective descriptive study that includes 114 patients who underwent surgeries for colorectal carcinoma at Al-Ain and Tawam Hospitals in the United Arab Emirates during the period 1985 through to 1998. These patients were under medical follow up for a mean period of 24 months (range 6-120 months) Both univariate and multivariate analyses were performed to assess predictors of recurrence and survival. The survival curves were computed by using Kaplan-Meier method. Mean annual incidence was 12 patients/year. There were 77 males (67.5%) and 37 females (32.5%). The mean age at the time of diagnosis was 46.6 11.8 years with the median age of 47 years. The mean overall survival time was 63.7 7.7 months. The survival time was shorter for younger patients, those with palliative resection, lymph node me...
Colorectal cancer prevalence according to survival data in Iran-2007
Iranian journal of cancer prevention, 2012
Objective: Colorectal cancer is a common (5000 new cases per year in Iran) and lethal disease. Regarding the high incidence (7 cases per 100000) and survival rate of colorectal cancer and the priority of prevalence index in cancer management, in this study, 1, 2-3 and 4-5 year point prevalence were determined according to survival data. Method: In this study, survival and incidence data were used for the determination of cancer prevalence. Incidence data were extracted from cancer registry in Iran and survival data were determined during a descriptive study through the follow up of 2342 colorectal cancer patients. 1, 2-3 and 4-5 year point prevalence were estimated from incidence rates in different years and the proportion of patients surviving 0.5, 1.5, 2.5, 3.5 and 4.5 year(s) from diagnosis .
Colorectal cancer patients in western Saudi Arabia
Saudi Medical Journal, 2019
Objectives: To determine the survival outcomes and to describe the epidemiological characteristics of patients with colorectal cancer (CRC) in western Saudi Arabia. Methods: Our study is a retrospective analysis of patients with CRC diagnosed between 2002 and 2014. We recruited 279 patients who were selected randomly and followed until the end of July 2017. A Kaplan-Meier curve was used to estimate the survival rate for CRC patients according to gender, histopathological pattern, tumor site, and mutation type, taking into consideration time factor, dropouts, and loss to follow-up. Results: The mean age of CRC patients was 57±13 years, and most of them were Saudi (87.5%). Regarding tumor epidemiology, 32.4% of the patients at Best American Joint Committee on Cancer (Best AJCC) stage 4; 28.9% were at stage 3; and 1.2% were at stage zero. The most frequent pathological variant was adenocarcinoma (77.4%); the most affected site was the rectum (40.5%). By Cox regression analysis, age at diagnosis, tumor stage, Kirsten Ras (KRAS) mutation, and lymphovascular invasion were significant prognostic factors for survival in CRC patients. Conclusion: Colorectal cancer patients presented to the hospital late in the disease course. This may call for lowering the screening age, increasing awareness programs, and establishing a national screening program.
Colorectal Cancer Patient Characteristics, Treatment and Survival in Oman - a Single Center Study
Asian Pacific journal of cancer prevention : APJCP, 2015
Colorectal cancer is the most common gastrointestinal cancer in Oman with an increasing incidence. We here report the presenting features, treatment outcomes and survival in a University hospital in Oman and compare our data with regional and international studies. Medical records of patients with colorectal cancer were reviewed retrospectively between June 2000 and December 2013 and were followed until June 2014. A total of 162 patients were diagnosed with colorectal cancer. The majority were males (58.6%), with a median age of 56 years. Rectum was involved in 29.6% of patients, followed by ascending and sigmoid colon. The majority of patients had stage III (42.6%) and stage IV (32.7%) disease at presentation. K-Ras status was checked for 79 patients, and 41 (51.9%) featured the wild type. Median relapse free survival was 22 months. Median overall survival for all patients was 43 months. Observed 5 year overall survival (OS) for stages I, II and III was 100%, 60% and 60% respective...
Predictors of Colorectal Cancer Survival in Golestan, Iran: A Population-based Study
Epidemiology and Health, 2013
We aimed to investigate factors associated with colorectal cancer survival in Golestan, Iran. METHODS: We used a population based cancer registry to recruit study subjects. All patients registered since 2004 were contacted and data were collected using structured questionnaires and trained interviewers. All the existing evidences to determine the stage of the cancer were also collected. The time from first diagnosis to death was compared in patients according to their stage of cancer using the Kaplan-Meir method. A Cox proportional hazard model was built to examine their survival experience by taking into account other covariates. RESULTS: Out of a total of 345 subjects, 227 were traced. Median age of the subjects was 54 and more than 42% were under 50 years old. We found 132 deaths among these patients, 5 of which were non-colorectal related deaths. The median survival time for the entire cohort was 3.56 years. A borderline significant difference in survival experience was detected for ethnicity (log rank test, p= 0.053). Using Cox proportional hazard modeling, only cancer stage remained significantly associated with time of death in the final model. CONCLUSIONS: Colorectal cancer occurs at a younger age among people living in Golestan province. A very young age at presentation and what appears to be a high proportion of patients presenting with late stage in this area suggest this population might benefit substantially from early diagnoses by introducing age adapted screening programs.
Survival of colorectal cancer in Iran
Asian Pac J Cancer …, 2009
Objective: Colorectal cancer is the fourth cause of cancer after stomach, bladder, prostate in men and second cause after breast in women in Iran. It is estimated that 4,000 new cases occur each year with 1,150 deaths annually. The present study aimed to determine survival of colorectal cancers in Iran in a national manner. Methods and Results: The data from national cancer registry department of the Ministry of Health and Medical Education (MOH&ME) were used as the main source of incident colorectal cancer information in Iran from March 2000 to March 2005. One and five year survival proportions were 88% and 45% for females versus 86% and 39% for men. The median overall survival for colorectal cancer in Iran was 3.5 years with a 95 % confidence interval of 3.2-3.8 years. The worst survival status was found for patients less than 20 and more than 80 years old. Conclusion: The overall 5 year survival for colorectal cancer in Iran (41%) is comparable even with some developed countries but it is far from those with advanced health care systems, or community based screening programs. Thus at the policy level, application of an appropriate national cancer control program and management guidelines should be under consideration.
Epidemiology and Survival of Colorectal Cancer in Lebanon: A Sub-National Retrospective Analysis
Cancer Control
Background Scarce data exist about colorectal cancer (CRC) presentation and outcomes in Lebanon. The aim of this study is to describe the characteristics of Lebanese patients diagnosed with colorectal cancer, particularly the method of detection, age of onset, stage at presentation, treatment modalities, and survival. Methods This is a retrospective study of a cohort of patients with CRC, diagnosed between 2005 and 2010, admitted to 6 major university-affiliated medical centers in Lebanon. Results The total sample consisted of 586 patients (median age: 64 years; M:F ratio: 1.25). The most common presenting symptoms were changes in bowel habits, abdominal pain, and blood per rectum. Only 3% had been diagnosed by screening colonoscopy. Of the patients diagnosed with CRC younger than 50 years of age, 72.5% had a positive family history ( P = .07). More than two-thirds of patients had an advanced stage of the disease III and IV at presentation. The Kaplan–Meier–estimated survival rate w...
Annals of Saudi Medicine
Background and oBjectives: The national data on colorectal cancer in Saudi Arabia has not been analyzed. The objective of this study is to describe the demographics, incidence and survival rates for colorectal cancer in Saudi Arabia for the period 1994-2010. design: Retrospective analysis of the Saudi Cancer Registry data for the period 1994-2010. setting: Data from the Saudi Cancer Registry was analyzed by stage at presentation (local, regional, distal, unknown) and survival rates were calculated using the Kaplan-Meier method. Patients: From 9889 colorectal cancer cases, a sample of 549 (5.6%) patients was selected and their living status ascertained to assess survival. results: Colorectal cancer has been the most common cancer among men and the third commonest among women since 2002 in Saudi Arabia. There has been a slight predominance among men with an average ratio of 116:100 over the years (range: 99:100-132:100). The overall age-standardized rate (ASR) approached a plateau of 9.6/100 000 in 2010. The incidence of the disease has been highest in the capital, Riyadh, where it reached 14.5/100 000 in 2010. Median age at presentation has been stable at around 60 years (95% confidence Interval (CI): 57-61 years) for men and 55 years (95% CI: 53-58 years) for women. Distant metastasis was diagnosed in 28.4% of patients at the time of presentation and rectal cancer represented 41% of all colorectal cancers diagnosed in 2010. The overall 5-year survival was 44.6% for the period 1994-2004. The ASR for all age groups below 45 years of age was lower than that for the United States. limitations: The study was retrospective with a possibility of bias from inaccurate staging of patients, and inaccurate survival information and patient demographics due to the underdeveloped census system prior to 2001. Survival data for the period 2005-2010 are lacking. conclusion: Colorectal cancer presents at a younger age in Saudis, especially in women. This has a major implication for decisions about the threshold age for screening. The ASR has increased, but is still much lower than in developed countries. The lower overall 5-year survival compared with developed countries is due to lack of screening, a higher proportion of advanced stage cancer at presentation, lack of specialized care outside the major cities and a higher proportion of rectal cancer cases.