Divertículo colónico invertido: presentación de un caso

introduction: reverse colonic diverticulum is an unusual endoscopic finding, some authors point it out within the clinical manifestations, lower gastrointestinal bleeding, other complications are not reported unless there are errors in diagnosis leading to a biopsy, as well as endoscopic resection. case report: a 70 years old, male patient came to the consultation by presenting a picture of abdominal pain on the left side from several months ago, with periods of improvement and relapses. as accompanying symptoms developed fever of unknown cause which improved with antipyretics, as well as constipation for over five years, taking laxatives regularly. in addition, he presented stools with blood striae more than once. in the physical examination was found pain in left side to the deep palpation and slightly hypocolored mucus. conclusions: considering the said features and the presence of multiple diverticular images, it was concluded as: diverticular disease of colon with presence of reverse colonic diverticulum, unusual mode exceptionally presented in some patients.