Age is a risk factor in acute lower gastrointestinal hemorrhages (LGIH). The objectives here were to analyze: (1) diagnostic and therapeutic handling, (2) related morbidity and mortality, (3) the indications for surgery, and (4) the evolution of acute LGIH in patients ≥80 years. Forty-three patients ≥80 years with acute LGIH were reviewed retrospectively. In 86%(n = 37) related co-morbidities were found, in 9%(n = 4) there had been prior colorectal surgery, 19%(n = 8) were antiaggregated, and 7%(n = 3) were anticoagulated. One hundred thirty-two cases of acute LGIH in patients < 80 years were used as a control group. Student’s t test and the chi-square test were applied. On arrival at the emergency ward 11 cases (26%) had hemodynamic instability and 8 of these were stabilized using conservative measures. In 39 cases an endoscopy was performed, allowing for an etiological diagnosis in 59%(n = 23) of cases, above all in those carried out in an urgent or semiurgent way. The arteriography permitted an etiological diagnosis in two of the four cases in which it was carried out. In seven patients (16%) urgent surgery was indicated: three were hemorrhoidectomies, three were subtotal colectomies, and one was a resection of the small intestine. The morbidity rate was 10%(n = 4) in the patients who were not treated and 14%(n = 1) in those treated, with a mortality rate of 8%(n = 3) and 14%(n = 1), respectively. The rate of relapse of bleeding after discharge from hospital was 42%(n = 18), with nine of these needing to be readmitted into hospital. In comparison with the control group, they present a different bleeding etiology (diverticulosis as opposed to the benign anal-rectal and small intestinal pathology in the younger population; P = 0.017), surgery is indicated with less frequency (9 versus 33%; P = 0.007), and there is a higher relapse rate (42 versus 26%; P = 0.045). Acute LGIH in geriatric patients relents in most cases with the use of conservative measures, although there is a high percentage of related morbidity and mortality, and of relapse of bleeding. Age is a risk factor in acute lower gastrointestinal hemorrhages (LGIH). The objectives here were to analyze: (1) diagnostic and therapeutic handling, (2) related morbidity and mortality, (3) the indications for surgery, and evolution of acute LGIH in patients ≥80 years. Forty-three patients ≥80 years with acute LGIH were reviewed retrospectively. In 86% (n = 37) related co-morbidities were found, in 9% (n = 4) there had been One hundred thirty-two cases of acute LGIH in patients <80 years were used as a control group. Student’s t test and prior (> = 8) were antiaggregated, and 7% (n = The chi-square test were applied. On arrival at the emergency ward 11 cases (26%) had hemodynamic instability and 8 of these were stabilized using conservative measures. In 39 cases an endoscopy was performed, allowing for an etiological diagnosis in 59% ( n = 23) of cases, above all in those carried out in an urgent or semiurgent way. The arteriogra phy to an etiological diagnosis in two of the four cases in which it was carried out. In seven patients (16%) urgent surgery was indicated: three were hemorrhoidectomies, three were subtotal colectomies, and one was a resection of the small intestine. (n = 1) in those treated with a mortality rate of 8% (n = 3) and 14% (n = 1), with a mortality rate of 10% (n = 4) in the patients who were not treated and 14% respectively. The rate of relapse of bleeding after discharge from hospital was 42% (n = 18), with nine of these occurred to be readmitted into hospital. the benign anal-rectal and small intestinal pathology in the younger population; P = 0.017), surgery was indicated with less frequency (9 versus 33%; P = 0.007), and there is a higher relapse rate (42 versus 26% = 0.045). Acute LGIH in geriatric patients relents in most cases with the use of conservative measures, altho ughthere is a high percentage of related morbidity and mortality, and of relapse of bleeding.