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 a 75 year old right handed male with past medical history notable for hypertension, hypercholesterolemia, history of colon cancer, who presented to on , after the onset of speech difficulties and right arm weakness. he had been helping his wife with the laundry and he suddenly developed slurred speech and difficulty talking. he noticed his right arm was not moving well. on arrival of emergency medical services, he was noted to have weakness of the right arm and leg. he was taken to the emergency department. he was mildly hypertensive, normal sinus rhythm. within fifteen minutes, the leg weakness resolved. physical examination: on initial examination, he was alert and oriented with sparse grammatical speech with paraphasic errors and a mild anomia. he was unable to repeat. he had a mild right facial droop and a right pronator drift with distal greater than proximal weakness of the right arm. he had sensory deficits of the right face, arm, trunk and leg. hospital course: he was given tpa at approximately two and one half hours after the symptoms began and then transferred to the intensive care unit. overnight, his symptoms improved. by the morning of , he had no complaints. of note, he was apparently seen by his primary care physician in the emergency department on , for complaints of shaking in the right arm, slurred speech, had no significant findings on physical examination and was sent home. the patient had a magnetic resonance scan performed that showed abnormal t2 signal hyperintensity within the left frontoparietal junction which involves the and white matter consistent with an acute infarct. there is also an old infarct within the right parietal white matter. mra showed visualization of left middle cerebral artery and one segment but no cortical branches. physical examination on , was improved from that on . his speech was fluent without paraphasic errors. repetition was intact. he has some mild anomia. his main deficits at this time, he has graphesthesia and stereognosis in the right hand. he does have a right pronator drift. finger extensors are 5-/5 on the right with full power in the interossei. deep tendon reflexes are 2+ bilaterally. plantar response is flexion bilaterally. finger to nose testing is accurate. the patient then on , underwent a carotid ultrasound and a transthoracic echocardiogram. the patient was started on aspirin therapy 325 mg p.o. q.d. noninvasive carotid study showed narrowing of less than 40% bilaterally of the internal carotid arteries and the patient's transthoracic echocardiogram was within normal limits with no evidence of thrombogenic area. the transesophageal echocardiography service came by on , and documented in the chart that the patient's transthoracic echocardiogram was an adequate study and that there was no indication to proceed to a transesophageal echocardiogram as they say based on the clinical scenario and evidence obtained on the transthoracic echocardiogram. the patient will be discharged on , on all his previous home medications which include: 1. atenolol 50 mg p.o. q.d. 2. prilosec 20 mg p.o. q.d. 3. aspirin 325 mg p.o. q.d. he will have follow-up with dr. on , at 1:00 p.m. they will at that time decide whether the patient can drive as he has been told he cannot drive until this visit. they will also decide if the patient needs to undergo a transesophageal echocardiogram. , m.d. dictated by: medquist36 procedure: injection or infusion of thrombolytic agent diagnoses: unspecified essential hypertension atrial fibrillation personal history of malignant neoplasm of large intestine cerebral artery occlusion, unspecified with cerebral infarction 

Answer: The patient is high likely exposed to