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: allergies: no known allergies / adverse drug reactions attending: chief complaint: back pain, ct findings of enlarging thoracic aortic dissection major surgical or invasive procedure: none. history of present illness: mr. is a 74 year old gentleman with known thoracic aortic aneurysm followed by his cardiologist who had sudden onset pain in his chest radiating to his back at 5 am this morning. he had similar symptoms 8 years ago when his dissection was first diagnosed, and has had intermittent discomfort since then but never this severe. he denies any nausea/vomiting, shortness of breath, or fever/chills. he went to hospital where he got some morphine and was transferred to . he has not required pain medication since this morning and is not having pain now. past medical history: htn, type b aortic dissection, seizure d/o, sah s/p craniotomy for aneurysm repair, pud, retinal detachment, hernia repair, gib, raynauds social history: alcohol - none; tobacco - 1ppd x many years family history: noncontributory physical exam: upon discharge: vs: tm 98.6 tc 98.6 hr 60 bp 110/53 rr 19 o2sat 96% ra general: gentleman appearing stated age, in no acute distress. resting in bed heent: eom intact, nares clear, mucus membranes moist, trachea at midline. cv: regular rate, rhythm. no appreciable murmurs, rubs or gallops. pulm: clear to auscultation bilaterally abd: soft, + bs throughout, nontender msk: palpable dp/pt pulses bilaterally. warm, well perfused. neuro: alert, oriented to person, place, time. cooperative with plan of care. pertinent results: 11:02pm ck(cpk)-61 11:02pm ck-mb-3 ctropnt-<0.01 03:00pm glucose-71 urea n-23* creat-1.0 sodium-139 potassium-4.8 chloride-100 total co2-34* anion gap-10 03:00pm wbc-5.3 rbc-4.11* hgb-12.4*# hct-38.0* mcv-93# mch-30.2# mchc-32.6 rdw-16.8* 03:00pm pt-12.7 ptt-30.4 inr(pt)-1.1 03:03am blood calcium-8.4 phos-3.4 mg-2.0 04:24am blood calcium-9.0 phos-3.1 mg-2.2 04:24am blood glucose-110* urean-21* creat-0.8 na-139 k-3.7 cl-100 hco3-31 angap-12 04:24am blood wbc-5.8 rbc-4.02* hgb-12.2* hct-36.3* mcv-90 mch-30.4 mchc-33.7 rdw-16.7* plt ct-227 brief hospital course: the patient was admitted to the vascular surgery service on for chest pain rradiating to his back, with a known history of descending thoracic dissection. neuro: the patient received adequate pain control throughout his hospitalization. cv: the patient was transferred from an osh where he underwent a cta of his chest, hich showed no acute aortic dissection with unchanged focal type a dissection as in , as well as an interval thrombosis of the majority of the previous type b thoracic dissection, with increase in size and tortuosity of the descending aorta to 5.5cm. there was no pulmonary embolus seen on cta. his blood pressure on arrival to the osh was 178/92 and 169/89 in the right and left arms; he received morphine and labetalol at that time for blood pressure control. he was subsequently transferred to for further management. cardiac surgery was consulted at the time, which recommended vascular surgery consultation as well as blood pressure management. while on the vascular surgery service, his systolic blood pressure was tightly controlled with anti-hypertensives within the sbp 90-120mmhg range. he was placed on his home anti-hypertensive medications at the same dosages on the day of discharge and tolerated it well by maintaining blood pressures in the 90s-110s and baseline hr in the low 50s. the patient remained asymptomatic while sitting up and ambulating. pulmonary: the patient was stable from a pulmonary standpoint; vital signs were routinely monitored. there was no pulmonary embolus seen on the cta. upon discharge, the patient was oxygenating well on room air. gi/gu: post-operatively, the patient was given iv fluids until tolerating oral intake. his diet was advanced appropriately, which was tolerated well. his foley was removed on hospital day 4. intake and output were closely monitored. prophylaxis: the patient received subcutaneous heparin during this stay, and was encouraged to get up and ambulate as early as possible. at the time of discharge on hospital day 4, the patient was doing well, stable vital signs with good blood pressures in the 90s-120smmhg, tolerating a regular diet, ambulating, voiding without assistance, with well-controlled pain. medications on admission: lisinopril 40mg qd valproic acid sr 250mg simvastatin 10mg qd hctz 25mg qd labetalol 200mg lorazepam 0.5mg tid prn anxiety discharge medications: 1. simvastatin 10 mg tablet sig: one (1) tablet po daily (daily). 2. hydrochlorothiazide 12.5 mg capsule sig: two (2) capsule po daily (daily). 3. labetalol 200 mg tablet sig: one (1) tablet po bid (2 times a day). 4. valproic acid 250 mg capsule sig: two (2) capsule po q12h (every 12 hours). 5. lisinopril 20 mg tablet sig: two (2) tablet po daily (daily). 6. nicotine 14 mg/24 hr patch 24 hr sig: one (1) patch 24 hr transdermal daily (daily). discharge disposition: home discharge diagnosis: enlarging thoracic aortic dissection, type b discharge condition: mental status: alert, oriented. cooperative with plan of care ambulatory status: ambulating independently. discharge instructions: you were admitted for evaluation of your thoracic aortic dissection in light of your back pain symptoms. you underwent a ct-scan of your chest, which showed an increase in the dissection. you were managed with blood-pressure lowering medications to keep your systolic blood pressure range between 90-120mmhg. there were no interventions performed during your hospital stay, and a discussion regarding endovascular stenting did take place. however, evaluation for this was deferred at this time given your wishes to avoid further intervention. you will be sent home on your home medications with the same dosages previous to admission. they are listed in your post-discharge medication list. followup instructions: please follow-up with dr. and dr. in 2 weeks; you may call his clinic at to schedule an appointment. please follow-up or call your pcp within the next two weeks to discuss your recent hospitalization. md procedure: arterial catheterization diagnoses: pure hypercholesterolemia unspecified essential hypertension other emphysema dissection of aorta, thoracic 

Answer: The patient is high likely exposed to