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 79-year-old man with progressive fatigue and lower back pain of months, found to have a hematocrit of 26% in his primary care physician's office and was therefore referred to the emergency room. initial vital signs in the emergency room triage, temperature 97.4, blood pressure sitting up was 98/42, heart rate 70 and standing upright was 94/40 with heart rate of 67. patient also was found to be guaiac negative. ct of the abdomen was done which was negative for abdominal aortic aneurysm. in the emergency room the patient did receive one unit of packed red blood cells because of low hematocrit and was also empirically started on levo and flagyl because of some radiographic evidence of possible pneumonia vs atelectasis. upon presentation the patient denied any chest pain, shortness of breath, abdominal pain, nausea, vomiting, hematemesis. he did have two episodes of bright red blood per rectum which he recalled happened at home several weeks ago. patient also upon presentation in the emergency room reported some back pain and therefore a ct angio was performed. ct angio was negative for aortic dissection. the patient also evaluated for myocardial infarct by ekg and serial cardiac enzymes which result was negative for mi. past medical history: significant for two sets of aortic valve replacements, - valve, revision due to endocarditis that occurred in . also has history of coronary artery disease, status post two mis, history of congestive heart failure with ejection fraction between 30 and 35%. also has benign prostatic hypertrophy and is status post turp. had a right hip replacement, history of spinal stenosis and history of parkinson's disease. additionally, patient has a history of atrial fibrillation for which he was taking the coumadin. medications: outpatient medications include sinemet at a dose of 50/200, taking two tabs four times per day, lopressor which she takes 25 mg , colace 100 mg , also daily dose of vitamin e, vitamin c, 81 mg of po aspirin, daily lactulose, coumadin which he takes either 5 mg or 2.5 mg on alternating days, celebrex which he takes 100 mg and b12 which he takes 1,000 units daily. social history: patient reports remote tobacco history, quit approximately . patient lives with his wife and has a visiting nurse who comes once a month to check his blood and also denies any smoking history. allergies: the patient has no known drug allergies. family history: notable for a brother who died at age 32, complications of diabetes, and a father who died age 62 from congestive heart failure. hospital course: given patient's anemia, a gi source was considered. the patient underwent colonoscopy during hospital course. the colonoscopy was positive for melanosis coli, believed to be secondary to chronic laxative use. so recommendation from gastroenterology was to discontinue laxatives, in particular senna containing laxatives and also recommended to follow a high fiber diet. melanosis was seen in the cecum and colon, descending colon, transverse colon, ascending colon. there were also diverticula noted in the descending colon, transverse colon, otherwise the rest of the colonoscopy was normal. egd was also performed, notable for a large sized hiatal hernia, a single submucosal nodule with distribution in the lower third of the esophagus. the duodenum was found to be normal and some cold biopsies were obtained from the second part of the duodenum. speech and swallow study was also done given patient's history of choking. speech and swallow found that patient had difficulty with flow, soft, thick and thin liquids given the greater potential after aspiration for thicker fluids, they recommended combination of soft solids with thin liquids. during this hospital course it should also be noted that the patient with the concern of bleeding had been held on his coumadin and so near the latter end of his hospital course he has been covered in terms of his coagulative protection with lovenox. following the recommendations of gastroenterology and the absence of a site of gross bleeding, plan was made to discharge the patient home with services. discharge diagnosis: 1. parkinson's disease. 2. dysphagia. 3. anemia. 4. melanosis coli. discharge condition: stable. discharge medications: lovenox 60 mg subcu to be taken until the patient's inr becomes therapeutic, warfarin at alternating doses of 5 mg daily alternating with 2 mg daily with inr to be checked this friday, , with the patient's primary care physician. enalapril 5 mg daily, sinemet 50/200 two tablets po qid, vitamin c 500 mg daily, vitamin e 400 iu daily and metoprolol 25 mg po bid, atorvastatin 10 mg po q d and levofloxacin 25 mg po q d times two days to finish up a week long course for the possible pneumonia seen on the radiograph. as mentioned, the patient's inr should be checked on friday, and the plan is to discontinue the lovenox once the coumadin produces a therapeutic inr. it was also recommended that the patient undergo swallow physical therapy to help reduce the risk of aspiration. , m.d. dictated by: medquist36 procedure: colonoscopy esophagogastroduodenoscopy [egd] with closed biopsy diagnoses: anemia, unspecified coronary atherosclerosis of native coronary artery unspecified essential hypertension atrial fibrillation diaphragmatic hernia without mention of obstruction or gangrene paralysis agitans old myocardial infarction heart valve replaced by transplant diverticulosis of colon (without mention of hemorrhage) 

Answer: The patient is high likely exposed to