Background: Cancer is the second cause of death in the world and the third in Iran. Colorectal cancer is the third fatal cancer in the world. Objectives: Blood group and its RH are among the genetic factors that can be associated with colon cancer. This study was performed with the aim of investigating the relationship between blood group and colon cancer. Methods: This study was undertaken in cases of colon cancer that referred to Namazi hospital from 2002 to 2011. The required data were gathered using a checklist, entered into SPSS software, and analyzed with descriptive statistical methods and Chi-square test.
Results:The results showed that the highest frequencies among 223 patients with colon cancer were related to blood group O+ (48.7 percent), RH+ (90.4 percent), male patients (60.4 percent), and married people (72.2 percent). The mean age of the patients was 60.09 ± 16.04. Blood group and colon cancer showed a statistically significant relationship (P < 0.05).
Conclusions:The findings showed that there is a statistically significant relationship between blood group and colon cancer. Conducting extensive studies to find risk factors of the disease, particularly the role of genetic factors and disease prevention, in susceptible people is recommended.Keywords: Blood Group, Colon Cancer, Relationship
BackgroundCancer is defined as a condition in which some cells begin to multiply in particular conditions out of natural processes (1). In recent years, major causes of death in humans have shifted from infectious diseases towards noncommunicable ones and cancer is known as the third leading cause of death after heart disease and accidents in Iran (2). Today, nearly 7 million cancer deaths occur annually in the world (13 percent of all deaths) and 10.5 million new cases of cancer become malignant. In Iran, according to the state records, 86.6 and 56.1 percent of cancer cases in 2003 and 2004, respectively, occurred in males and 43.3 and 43.9 percent were in females (3). At the beginning of the present century, the major causes of lethal cancers were lung, stomach, liver, colon, breast, and esophagus, in sequence. In 2005, lung, stomach, liver, colon, and breast cancers were responsible for 1.3, 1, 0.66, 0.65, and 0.5 million deaths, respectively (4). The reports of the world health organization in 2000 and 2005 show that stomach, esophagus, and colon cancers were among the six cancers with highest mortality rates (5). Colorectal cancer is the third most common cancer in men and the second most common cancer in women, and more than 1.2 million new cases are diagnosed every year in the world (6). The cause of cancer is not a single disease, but a set of factors (environmental, hereditary, and genetic factors) act together to cause cancer (1). Colon cancer is the most common gastrointestinal cancer and is the second leading cause of death in America and other developed countries (7). Etiology of colon and rectum cancer is unknown like other cancers (8-10). However, it is known today that genetic factors a...