Here, we present the case of an 87-year-old woman with heart failure, hypertension, and iron deficiency anemia a treatment history amlodipine, olmesartan, carvedilol, hydralazine for 4 years, ferrous sodium citrate 2 years. The patient was referred to Department Gastroenterology occult blood in stool, endoscopic examination arranged. Colonoscopy showed sigmoid colon adenocarcinoma, esophagogast...