Consider the following medical report that includes the patient's historical health records. Use it to predict the disease that the patient is high likely exposed to. 

 Medical Report: history of present illness: this is a 71 -year-old woman with a history of hypertension, diabetes, and a cerebrovascular accident for which she was taking coumadin. she was in her usual state of health until one day prior to admission when she began experiencing diarrhea and purple stools, along with lightheadedness and dizziness with each bowel movement. she denies any loss of consciousness, chest pain, abdominal pain, nausea or vomiting. she denies any prior similar episodes. her prodrome included several days of a nonproductive cough for which she was taking robitussin. past medical history: 1. diabetes mellitus for which she was taking oral agents. 2. hypertension. 3. cerebrovascular accident which occurred eleven years ago. the patient currently has residual leg weakness. the patient is on coumadin status post cerebrovascular accident. , m.d. dictated by: medquist36 procedure: other endoscopy of small intestine colonoscopy other irrigation of (naso-)gastric tube diagnoses: unspecified essential hypertension acute posthemorrhagic anemia diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled peripheral vascular disease, unspecified personal history of other diseases of circulatory system long-term (current) use of anticoagulants chronic or unspecified gastric ulcer with hemorrhage, without mention of obstruction benign neoplasm of colon 

Answer: The patient is high likely exposed to