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: the patient is an 83 year old man with a history of coronary artery disease and a long history of duodenal arteriovenous malformations followed closely with the primary care physician with periodic hematocrit to monitor her blood loss. the patient's hematocrit recently dropped from 42 to 35. the patient presented to the emergency department with several days of melena. hematocrit on admission was 30. the patient denies pain, non-steroidal anti-inflammatory drugs use or aspirin use. past medical history: coronary artery disease, multiple duodenal intestinal arteriovenous malformations, status post esophagogastroduodenoscopy on with cautery of duodenal arteriovenous malformations, status post jejunal arteriovenous malformations, diverticulosis, history of colon cancer duke's a, status post partial resection, aortic stenosis, myocardial infarction in the past times two, status post hernia repair, status post prostatectomy, gastroesophageal reflux disease. allergies: no known drug allergies. medications on admission: atenolol 100 mg q.d.; isordil 10 mg b.i.d.; prevacid 30 mg q.d.; celexa 20 mg q.d.; hydrochlorothiazide 12.5 mg q.d.; lipitor 10 mg q.d. social history: married, retired. tobacco 5 pack years, quit 35 years ago. denies alcohol. family history: mother died of a stroke at 67, father died of lung cancer at age 87. physical examination: temperature 98.9, pulse 60, blood pressure 96/36, respiratory rate 14, sating 99% on 4 liters nasal cannula. elderly man in no acute distress. pupils equal, round and reactive to light. extraocular movements intact. sclera nonicteric. oropharynx clear. moist mucous membranes, no jugulovenous distension. lungs clear to auscultation bilaterally. regular rate and rhythm, s1 and s2, iii/vi systolic murmur at the left upper sternal border. abdomen soft, nontender, nondistended, positive bowel sounds. no edema. alert and oriented times three. moves all extremities. laboratory data: in the emergency department esophagogastroduodenoscopy was performed with glucagon. excellent view of duodenum down past second portion was achieved. no ulcers, arteriovenous malformations or active bleeding was noted. fresh bile was found in the duodenum. stomach had patchy gastritis in the prepyloric area and one small patch in the fundus but no active bleeding and not significant enough to account for his bleeding. laboratory data on admission revealed white count 13.9, hematocrit 30, down from 34.7 on . platelets were 221. sodium 136, potassium 3.6, chloride 97, bicarbonate 25, bun 28, creatinine 1.2, glucose 112. pt 12.5, ptt 22.6, inr 1.0. electrocardiogram was normal sinus rhythm at 68 beats/minute, left ventricular hypertrophy, normal axis, qrs 152, right bundle branch block, poor r wave progression, . depressions in v5 through v6. iron 25, tibc 393. hospital course: the patient was admitted to the medicine intensive care unit where the patient was transfused a total of 4 units of packed red blood cells. two large bore intravenous lines were placed. the patient was started on b.i.d. protonix. the patient had a tag red blood cell scan performed which was negative. the patient was ruled out for an myocardial infarction with serial creatinine kinase. aspirin was held. the patient was continued on beta blocker and lipitor. the patient also had his atenolol and hydrochlorothiazide held secondary to his bleeding. the patient's hematocrit remained relatively stable. he had b.i.d. hematocrits checked. he was felt stable enough to transfer back to the medicine floor. the patient was transferred. he had esophagogastroduodenoscopy and colonoscopy performed on . the colonoscopy revealed diverticulosis of the sigmoid colon and distal descending colon, intact ileocolonic anastomotic site, otherwise normal colonoscopy to the ileum. endoscopy revealed normal esophagus, patchy discontinuous erythema and granularity of the mucosa with no bleeding noted in the antrum and stomach body. these findings were compatible with gastritis. in the duodenum a single sessile 2 mm nonbleeding polyp of benign appearance was found in the jejunum. a single nonbleeding arteriovenous malformation was found in the jejunum also. the patient was switched from intravenous b.i.d. protonix back to once a day p.o. proton pump inhibitors. his diet was advanced. his hematocrit remained stable. the patient was felt stable for discharge the next day. the patient was restarted on all cardiac medications. condition on discharge: stable. discharge diagnosis: 1. gastrointestinal bleed, status post multiple esophagogastroduodenoscopies and colonoscopy which revealed gastritis, nonbleeding arteriovenous malformation in the jejunum and nonbleeding jejunal polyp. 2. coronary artery disease 3. aortic stenosis 4. gastroesophageal reflux disease discharge medications 1. celexa 20 mg q.d. 2. lipitor 10 mg q.d. 3. prevacid 30 mg q.d. 4. isordil 10 mg b.i.d. 5. hydrochlorothiazide 12.5 mg q.d. 6. atenolol 100 mg q.d. the patient has been scheduled for a capsule endoscopy for . he was instructed to be npo the night of , after midnight and to report to the lobby at 8 am on . the patient will also follow up with dr. and dr. . the patient is instructed to follow up with his primary care physician in one to two weeks. , m.d. dictated by: medquist36 procedure: other endoscopy of small intestine other endoscopy of small intestine colonoscopy diagnoses: coronary atherosclerosis of native coronary artery esophageal reflux acute posthemorrhagic anemia aortic valve disorders old myocardial infarction personal history of malignant neoplasm of large intestine angiodysplasia of intestine with hemorrhage unspecified gastritis and gastroduodenitis, without mention of hemorrhage diverticulosis of colon (without mention of hemorrhage) 

Answer: The patient is high likely exposed to