Department of Pathology, School of Medicine and Pharmacy, University of Rwanda, Kigali, Rwanda.
Department of Pathology, Butaro Cancer Center of Excellence, Burera, Rwanda.
Can J Gastroenterol Hepatol. 2022 Sep 20;2022:6608870. doi: 10.1155/2022/6608870. eCollection 2022.
Worldwide, colorectal cancer (CRC) is the second most diagnosed cancer in female and the third in men, arising from the epithelium of the colorectum. It is known that colorectal cancer is common in developed countries than in developing countries which may be due to inaccurate data on the existence of the disease in that region combined with embracing western lifestyle expressed by the current trend of changes in cultural, social, and lifestyle practices playing a major part in the etiology of CRC. The aim of this study was to document epidemiological, pathological characteristics, and prognostics determinants of patients diagnosed with CRC in Rwanda. The data from patients' files and reviewed glass slides for 101 cases all from Kigali University Teaching Hospital (CHUK) were statistically analyzed and patient characteristics were described as mean and frequency accordingly. Comparisons were performed using chi square tests, Fisher's exact test and odds ratio with 95% confidence interval (CI). Survival curves were plotted using the Kaplan-Meier method, and log-rank test was used to assess the statistical differences in the observed survival curves by each categorical variable. A value < 0.05 was considered statistically significant. Statistical analyses were performed using Statistical Product and Service Solutions (SPSS), GraphPad Prism, and MedCalc, accordingly. Mean age of the participants was 54.26 years, the main symptom was rectal bleeding (46.5%), rectal adenocarcinoma NOS represented 40.6%, conventional adenocarcinoma was 60.4%, most tumors were of Grade II (54.5%), most common stage was pT3N0 (20.8%), resection margins were free at 71.3%, lympho-vascular invasion was 49.5% of cases, a high immune response was in 71.3% of cases and of 101cases, and 55.4% were still alive at the end of the data collection, with 29.3% of patients have overall survival of 5 years. Prognostic determinants also affect the outcome in this study and overall survival period was 3 years for CRC diagnosed in Rwanda.
在全球范围内,结直肠癌(CRC)是女性中第二大常见的癌症,在男性中排名第三,源于结直肠的上皮。据了解,结直肠癌在发达国家比在发展中国家更为常见,这可能是由于该地区对该疾病存在的数据不准确,加上目前文化、社会和生活方式发生变化的趋势,西方生活方式的影响在 CRC 的病因中起着重要作用。本研究的目的是记录卢旺达诊断为 CRC 的患者的流行病学、病理特征和预后决定因素。对来自基加利大学教学医院(CHUK)的 101 例患者的病历和复查的玻璃切片数据进行了统计学分析,并根据平均值和频率描述了患者特征。使用卡方检验、Fisher 精确检验和比值比(95%置信区间(CI))进行比较。使用 Kaplan-Meier 方法绘制生存曲线,并使用对数秩检验评估每个分类变量观察到的生存曲线之间的统计学差异。 值<0.05 被认为具有统计学意义。统计分析分别使用统计产品解决方案(SPSS)、GraphPad Prism 和 MedCalc 进行。参与者的平均年龄为 54.26 岁,主要症状是直肠出血(46.5%),直肠腺癌NOS 占 40.6%,常规腺癌占 60.4%,大多数肿瘤为 II 级(54.5%),最常见的分期为 pT3N0(20.8%),71.3%的切缘无肿瘤残留,淋巴血管侵犯占 49.5%,71.3%的病例存在高免疫反应,在 101 例病例中,55.4%的患者在数据收集结束时仍然存活,29.3%的患者 5 年总生存率为 29.3%。预后决定因素也影响本研究的结果,在卢旺达诊断的 CRC 的总生存时间为 3 年。