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 49-year-old male who presents with a left neck mass that was initially noted in and has become progressively larger. the neck mass has been worked up to be a paraganglioma located at the carotid bifurcation. the patient has had a magnetic resonance imaging with angiography preoperatively as well as a fine-needle aspiration which revealed no malignancy. the magnetic resonance imaging identified findings were significant with a large paraganglioma. the patient denies any symptoms other than pain and discomfort. past medical history: the patient has a history of stroke suffered in following a drug overdose. he denies any other medical history. past surgical history: none. medications on admission: 1. aspirin 325 mg p.o. q.d. 2. serax p.o. q.h.s. allergies: no known drug allergies. family history: the patient's father has a history of coronary artery disease and has had a coronary artery bypass graft. his mother is alive and well. he has two sisters and two brothers, all of whom are alive and healthy. social history: the patient has a history of opiate drug abuse as described above. he was admitted in to the following a drug overdose during which he was found unresponsive. he also has a history of heroin abuse in his native country of . he currently denies any drug use at this time. he denies any smoking or alcohol use. physical examination on presentation: on presentation, the patient presented as a pleasant 49-year-old male in no acute distress. his vital signs were stable on admission. his head was normocephalic and atraumatic. his extraocular movements. his pupils were equal, round, and reactive to light. his oropharynx was clear with no masses or lesions. his neck was supple with full range of motion. there was an obviously palpable large mass overlying his left neck anterior to his sternocleidomastoid. the mass was not pulsatile and firm. lungs were clear to auscultation. his heart was regular in rate and rhythm with no murmurs, rubs or gallops. his abdomen was soft, nontender, and nondistended. his extremities were warm and well perfused with no clubbing, cyanosis or edema. pertinent laboratory data on presentation: laboratories on admission revealed the patient had an unremarkable chemistry-7, complete blood count, and coagulation studies. his preoperative hematocrit was 35.3. his liver function tests were normal. radiology/imaging: the patient also had preoperative imaging consisting of a magnetic resonance imaging/magnetic resonance angiography of his neck. he also had fine-needle aspiration. these were all done in . the tests demonstrated findings consistent with a benign paraganglioma. the patient also had an electrocardiogram which revealed a normal sinus rhythm. hospital course: the patient was admitted on ; initially to the interventional radiology service. given the size of his mass, it was thought that embolization prior to operative removal would be appropriate. he underwent embolization as a two-stage procedure on . he tolerated the procedure well, and his mass notably shrank following embolization. he had a repeat angiography studies following the embolization. on , the patient was taken to the operating room for removal of his paraganglioma. the patient tolerated the procedure quite well; however, his paraganglioma enclosed both his internal and external carotid and was difficult to resect. resection of the tumor required a transection of the carotid artery below the level of the bifurcation. vascular surgery was consulted preoperatively in case this situation were to arise. they assisted in the operating room and performed a saphenous vein graft once the paraganglioma was removed. the ganglioma was removed with all nerves identified. his hypoglossus, spinal, accessory, and vagus nerve were all identified and preserved. postoperatively, however, the patient had a noted defect in his hypoglossal nerve. this was manifested by left axis deviation and inability to move the tongue toward the left. following his operation, his admitted to the surgical intensive care unit for monitoring and management. he had a relatively stable hospital course. initially, and attempt was made to see if the patient could tolerate orals, but he failed his speech and swallow study. for this reason, a feeding tube was placed to provide enteral nutrition. however, the patient tolerated this poorly and pulled his tube on several occasions. for this reason, a percutaneous endoscopic gastrostomy tube was decided to be placed by the interventional radiology service. initially, a gastrojejunostomy tube was placed. this allowed for continuous tube feedings. he tolerated his tube feeds well. however, the gastrojejunostomy tube had to be switched over to a percutaneous endoscopic gastrostomy tube to perform bolus feedings. this was performed on . he tolerated both feedings well. the patient was otherwise doing well. he remained afebrile. his neurologic examination improved with better improved function of his tongue. he still had a notable deficit on movement of his tongue to the left, but it was significantly better than initially postoperatively. his neck incision remained clean, dry, and intact with no hematoma. discharge disposition: subsequently, the patient was discharged in stable condition on . discharge followup: follow up with dr. and follow up with dr. for his saphenous vein graft. condition at discharge: condition on discharge was stable discharge status: discharge status was to home. discharge instructions: the patient was to follow up with dr. on , . the patient was also to follow up with dr. in vascular surgery in one to two weeks. medications on discharge: 1. keflex suspension per g-tube 500 mg q.i.d. (times seven days). 2. zantac 150 mg per g-tube b.i.d. 3. dilaudid 1 mg p.o. (times 10 tablets). 4. aspirin 325 mg per g-tube q.d. 5. boost plus six cans per g-tube q.d. , m.d. dictated by: medquist36 procedure: enteral infusion of concentrated nutritional substances percutaneous [endoscopic] gastrostomy [peg] percutaneous [endoscopic] gastrojejunostomy other excision of vessels, other vessels of head and neck extracranial-intracranial (ec-ic) vascular bypass diagnoses: chronic hepatitis c without mention of hepatic coma accidental puncture or laceration during a procedure, not elsewhere classified neoplasm of uncertain behavior of paraganglia 

Answer: The patient is high likely exposed to