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 85-year-old white male has a history of hypertension, hypercholesterolemia, and had a positive stress test. he has had six months of increased dyspnea on exertion, shortness of breath, and nausea. his exercise tolerance test on revealed moderate-severe inferior apical ischemia and inferior apical hypokinesis. he underwent cardiac catheterization on at which revealed the left main coronary artery had 80% distal concentric stenosis, lad had 70 and 80% tandem mid vessel lesions and diffuse disease with left to right collaterals. diagonal 1 had a 60% lesion. left circumflex had a 70% om-1 lesion, and the rca had a 50% mid lesion. the left ventricle had an apical aneurysm with an ejection fraction of 55%, apical dyskinesis. dr. was consulted for cabg. past medical history: 1. hypertension. 2. hypercholesterolemia. 3. status post gastrointestinal bleed secondary to nonsteroidal use. 4. history of prostate cancer status post radiation therapy. 5. status post orchiectomy. 6. status post inguinal hernia repair. 7. history of gout. medications on admission: 1. lopressor 50 mg po q am, 25 mg po q pm. 2. imdur 60 mg po q am, 30 mg po q pm. 3. lipitor 10 mg po q day. 4. allopurinol 100 mg po q day. 5. aspirin 81 mg po q day. 6. iron 325 mg po q day. allergies: ether. family history: positive for coronary artery disease. social history: he lives alone. he has a 120 pack year smoking history, quit 25 years prior to admission. does not drink alcohol. review of systems: unremarkable. physical examination: on physical exam, he is a well-developed elderly white male in no apparent distress. vital signs stable, afebrile. heent exam: normocephalic, atraumatic. extraocular movements are intact. oropharynx is benign. he had upper and lower dentures. neck was supple, full range of motion, no lymphadenopathy or thyromegaly. carotids are 2+ and equal bilaterally with a positive radiating murmur. lungs were clear to auscultation and percussion. cardiovascular examination regular, rate, and rhythm, normal s1, s2, with no murmurs, rubs, or gallops. abdomen was soft and nontender with positive bowel sounds. no masses or hepatosplenomegaly. extremities are without clubbing, cyanosis, or edema. pulses were 2+ and equal bilaterally throughout. he had an intra-aortic balloon in place in the right groin. neurologic examination was nonfocal. the patient was admitted to the ccu following cardiac catheterization, and dr. was consulted, and on , the patient underwent a cabg x3 with lima to the lad, reverse saphenous y graft to the diagonal and om. cross-clamp time was 87 minutes, total bypass time 112 minutes. he was transferred to the csru on nitroglycerin and propofol in stable condition. he did have increased chest tube output immediately postoperatively, and was re-explored for bleeding. there was no specific source found. hematoma was evacuated, and the patient was transferred back to the csru in stable condition. he remained intubated overnight. he did have his intra-aortic balloon pump removed on postoperative day #1. he did remain intubated as he was quite fluid overloaded. he continued to be diuresed, was off all drips. he did complain of right lower quadrant abdominal tenderness and general surgery was consulted, that was on postoperative day #3. he got an abdominal ct scan which revealed question of thickened cecum with stranding, but was negative for free air. he was followed and continued to have abdominal distention and pain which waxed and waned. he was extubated on postoperative day #5. his chest tubes were also discontinued. he was then started on a regular diet. he did then continue to complain of right lower quadrant abdominal pain, so he had an abdominal ct scan on and was taken to the operating room for small bowel resection, and a necrotic ileal segment was found. the patient was transferred back to the csru and was stable. he was intubated and on tpn. he slowly improved. he is on flagyl and zosyn, and he was followed by id. he was extubated on postoperative day of abdominal surgery. continued to require pulmonary therapy and diuresis. he remained on tpn. he had some temperature spikes. all the cultures were negative, and he was continued empirically on zosyn. patient remained npo and on postoperative day #7 he had his nasogastric tube inserted and started on clear liquids. he continued to advance his diet. continued to progress and on postoperative day 17 and 10, he started to have melena. he was seen by gi. he had a negative upper scope, egd, and then he continued to bleed required 10 units of packed cells. he also had a colonoscopy on in which the anastomotic site of the ileum was not shown, but there was no evidence of active bleeding throughout the entire colon and distal terminal ileum. so he was treated conservatively and continued to eat, and eventually this bleeding resolved. the patient was transferred to the floor postoperative day #22. he continued to progress, and was discharged to rehabilitation on postoperative day 25. laboratories on discharge: hematocrit is 33.3, white count 9,700, platelets 420. sodium 133, potassium 4.1, chloride 102, co2 22, bun 26, creatinine 1.1, blood sugar 89. discharge medications: 1. ecotrin 325 mg po q day. 2. percocet 1-2 tablets po q4-6h prn pain. 3. amiodarone 200 mg po q day x6 weeks. 4. combivent 1-2 puffs q6h. 5. miconazole powder tid. 6. protonix 40 mg po q day. 7. lipitor 10 mg po q day. 8. allopurinol 100 mg po q day. follow-up instructions: he will be followed by dr. in two weeks, by dr. in weeks, by dr. in weeks, and dr. in six weeks. , m.d. dictated by: medquist36 procedure: single internal mammary-coronary artery bypass extracorporeal circulation auxiliary to open heart surgery combined right and left heart cardiac catheterization coronary arteriography using two catheters parenteral infusion of concentrated nutritional substances (aorto)coronary bypass of two coronary arteries angiocardiography of left heart structures other partial resection of small intestine other endoscopy of small intestine reopening of recent thoracotomy site colonoscopy implant of pulsation balloon diagnoses: coronary atherosclerosis of native coronary artery pure hypercholesterolemia unspecified essential hypertension atrial fibrillation personal history of malignant neoplasm of prostate hemorrhage complicating a procedure surgical operation with anastomosis, bypass, or graft, with natural or artificial tissues used as implant causing abnormal patient reaction, or later complication, without mention of misadventure at time of operation hemorrhage of gastrointestinal tract, unspecified acute vascular insufficiency of intestine 

Answer: The patient is high likely exposed to