Colorectal cancer is a clinical entity that presents its own etiopathogenic, physiopathological and anatomoclinical characteristics, which make it independent from other neoplasms. Its incidence has been increasing since the middle of the last century, finding a high prevalence in the elderly due to the increase in life expectancy [8].

The incidence of CRC varies according to age, increasing markedly after the age of 50, increasing every decade between 1.5 and 2 times. 92.5% of cases occur over 50 years of age and 78% are registered before 80 years of age, with the average age at the time of diagnosis being between 60 and 79 years, a range within the found in the results observed in this study and in others published in the literature.

The average age of the patients with colorectal cancer studied by García Sepúlveda [9] was 68.66 ± 11.39 years, with the youngest being 44 years and the oldest 91 years. Of the CRC patients evaluated by Lee et al [10]. 7.2% (n=2883) were under 44 years old, 15.2% (n=6031) between 45 and 54 years old, 22.8% (n=9088) between 55 and 64 years old, the 26.9% (n=10720) between 65 and 74 years and 28% (n=11178) 75 years or more, with a mean age of 65.13 ± 13.44 years. The average age at diagnosis of colorectal cancer in the study by Figuereido González et al [11,12] was 69.68 ± 13.72 years, a median of 65.5 years and a minimum of 43 and a maximum of 92 years. The mean age of the 473 patients with CRC included in the series by Liu et al [13] was 67.5 years, with a standard deviation of 11.4 years, a median of 69, and an age range between 25 and 90 years. According to the results of Davidov [14] the age of the patients with CRC ranged between 39 and 76 years, with a mean of 62.7 years and 48 (64.8%) older than 60 years. With regard to gender, throughout various studies such as those carried out by Sánchez Gudín [15] it is observed that although the difference between both sexes is scarce, men present a greater tendency to present adenomatous polyps and colorectal cancer than women. However, the results of this thesis show a higher incidence of Colon Rectal Cancer in the female sex, which is similar to that reported by [16] who found that more than 50% of the cases were women. According to the results of [17] in more than half of the cases (51%) the tumor was located in the sigmoid colon, in 16% in the ascending colon, in 10% in the descending colon, in 9% in the transverse colon, 8% in the cecum and 6% in the rectum. In a study conducted by [18] the tumor was located in the sigmoid colon in 40 (45.5%) patients, in the cecum in 22 (25%), in the rectum in 11 (12.5%), in the ascending colon in 10 (11.4%) and in the transverse colon in 5 (5.7%). Regarding tumor location, [19] found that the most common location for these was the sigmoid colon in 50%, the cecum in 20%, the ascending colon in 15%, and the transverse colon in 7.5%, the splenic flexure in 5% and the descending colon in 2.5%. Regarding tumor location, Abu-Helalah et al [20] found that 21% of the patients had the tumor located in the sigma, 15% in ascending colon, 13% in the upper third of the rectum, 11% in the descending colon, 10% in the transverse colon, 8% in the cecum, 7% in the lower third of the rectum, 5% in the third middle of the rectum, 3% in the rectosigma and 2% in the hepatic flexure; by simplifying the location to the colon or rectum, 72.6% of the patients had the tumor located in the colon and 27.4% in the rectum. The CRCs included in the work by [21] were located in the sigmoid colon in 462 (31.2%) patients, in the rectum in 419 (28.3%), in the rectosigmoid junction in 156 (10, 5%), in the cecum in 97 (6.5%), in the ascending colon in 93 (6.3%), synchronously in 65 (4.4%), in the hepatic flexure in 52 (3, 5%), in the transverse colon in 49 (3.3%), in the splenic flexure in 44 (3%), in the descending colon in 42 (2.8%) and in the appendix in 3 (0.2 %). Consistent with the results shown here, other investigations where abdominal wall closure techniques are evaluated show a predominance of patients who underwent elective surgery. In this investigation, laparotomy closure with total stitches was significantly lower than closure with subtotal stitches, this is explained by the characteristics of the closure itself. In the reviewed literature, no work was found that compared these two techniques, however, in the studies [22,23] where the time required for wall closure was evaluated, it was significantly less in those patients where the subtotal points were given in mass. Numerous clinical and experimental studies as well as systematic reviews and meta-analyses have been published for more than 2 decades to provide better guidance on the use of abdominal wall closure materials and methods. When comparing the closure of the abdominal wall by subtotal points in mass with subtotal points in planes [24]. found as complications, wound infection in 3 cases of the first group and in 6 of the second, wound dehiscence in 1, 8% and 7.1%, respectively, incisional hernia in 4.1% of the cases with mass closure and in 7.1% of the cases with layered closure, scar complications (pain or hypertrophy) in 2 and 4 patients in each group and granuloma in 4.1% of the cases of the first group and 7.1% of those of the second. According to [25] closure with subtotal stitches of the abdominal wall caused wound infection in 10 (4.71%) patients, partial dehiscence in 2 (0.94%), wound granuloma in 1 (0 47%) and incisional hernia in 5 (2.35%). In a group of patients with peritonitis studied by [26], the closure of the abdominal wall was performed using subtotal stitches, the complications derived from it were wound infection in 61 (35.7%), dehiscence in 41 (23.9%), wound granuloma in 8 (4.7%) and incisional hernia at three months in 5 (2.9%) and at one year in 17 (11.3%). In the opinion of this author and in accordance with other investigations such as those conducted by [27-31] the lower occurrence of complications in the group of patients in which subtotal stitches were used for abdominal wall closure, resulted in a shorter hospital stay in this group of patients. It should be noted that in our study complications such as eventration, evisceration and incisional hernia did not present with significant differences with the use of PS for laparotomy closure against the reviewed literature.