The utilization of colonoscopy as a diagnostic and treatment tool allowed for advances in the approach of colonic angiodysplasia. This entity is responsible for one third of the cases of lower gastrointestinal bleeding. We discuss a 65 year old patient who suffered from coronary heart disease and chronic renal insufficiency that required dialysis. This patient developed massive hematochezia after starting the use of platelet aggregation inhibitors and required multiple transfusions. The colonoscopy identified vascular lesions in the cecum, where exist a high risk of perforation during therapeutics interventions. There are descriptions in medical literature of the use of hemostatic agents such as argon plasma coagulation and vasoconstrictors used separately. The angiodysplasia was treated endoscopically by the application of argon plasma laser after elevating the lesions with saline and, described for the first time in Brazil, adding vasoconstrictor to the saline solution.
Colonoscopy; Angiodysplasia; Colon; Argon
