Mesorectal Microbiome as a Prognostic Factor in Patients With Rectal Cancer

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The 5-year survival rate for patients with rectal cancer is 64%. Despite the development of personalized cancer treatments, the implantation of surgical approaches with more precise fields of vision and the current prognostic factors based on the quality of resection of the surgical specimen (intact...

The 5-year survival rate for patients with rectal cancer is 64%. Despite the development of personalized cancer treatments, the implantation of surgical approaches with more precise fields of vision and the current prognostic factors based on the quality of resection of the surgical specimen (intact margins and complete resection of the mesorectum), the long-term results for patients with rectal cancer remain grim. Recently, it has been shown that dysfunctional fat tissue is characterized by tissue remodeling, grater lipids deposits and high adipokines secretion generates a pro inflammatory state, hypoxia and angiogenesis. These products generated by dysfunctional peritumoral adipose tissue create an ideal microenvironment for initiation and tumor progression. The presence of microbiome in the mesentery of patients with colitis has confirmed the translocation of microorganisms from the intestine to adjacent tissues, together with the differences found in the bacterial composition in colonic mucosa and fecal samples between patients with rectal cancer and healthy individuals, and the prognosis value of the quality of mesorectum resection suggests that the microbiome present in lymph-fatty tissue in patients with rectal cancer may be a key element in mesorectum dysfunction, progression and dissemination of oncological disease.

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