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 63-year-old right-handed gentleman who was originally diagnosed with melanoma in . since his diagnosis, he underwent a wide excision of the left shin melanoma with sentinel lymph node biopsy in and additional lymph node removal in . he also had stereotactic radiosurgery on to a left medial frontal lesion and stereotactic radiosurgery to a vermis lesion in . since then, he has developed recurrence of the left frontal brain metastasis versus radiation necrosis. the patient was admitted status post left frontal craniotomy for resection of tumor versus necrosis. summary of hospital course: postoperatively, his vital signs were stable. he was afebrile. he was awake, alert, and oriented times two (to name and place). he was without complaints. he had a slight frontal headache. his vital signs revealed temperature was 99.6, his heart rate was 69, his blood pressure was 115 to 165/55 to 70, his respiratory rate was 12 to 20, and his oxygen saturation was 97 percent on room air. the patient underwent resection of the left frontal metastatic melanoma and radiation necrosis. his pupils equal, round and reactive to light and accommodation. he had no facial asymmetry. his tongue was midline. his smile was symmetric. his sternocleidomastoid strength was greater on the right than on the left. he had no drift. his fine finger movements were intact. his strength was throughout in all muscle groups. his sensation was intact to light touch. he remained in the post anesthesia care unit overnight where he remained neurologically stable. he was oriented to place but not to date. naming was intact. his grasps were full. he had no drift. he was transferred to the regular floor. he decadron was slowly weaned. he was followed by physical therapy and occupational therapy and found to require a short rehabilitation stay prior to discharge to home. he had a follow-up magnetic resonance imaging scan which showed good excision of the tumor and necrosis. the patient had slight confusion on postoperative day two. he had a head computer tomography which showed no change. the patient's mental status has remained stable. he was awake, alert, and oriented times two, but he was sometimes somewhat a little confused; although this was improving. his balance was still somewhat off, and his safety awareness was slightly decreased. the patient would benefit for a short rehabilitation stay prior to discharge to home. medications on discharge: 1. decadron 2 mg by mouth q.8h. for two days and then decadron 2 mg by mouth q.12h. (starting on ) and stay at this dose. 2. percocet one to two tablets by mouth q.4h. as needed. 3. famotidine 200 mg by mouth twice per day. 4. sertraline 150 mg by mouth once per day. 5. atorvastatin 5 mg by mouth once per day. 6. hydrochlorothiazide 12.5 mg by mouth once per day. 7. ramipril 10 mg by mouth once per day. 8. senna one tablet by mouth twice per day as needed. 9. colace 100 mg by mouth twice per day. 10. insulin sliding scale - the patient has not required coverage. 11. dilantin 100 mg by mouth three times per day. condition on discharge: the patient's condition was stable at the time of discharge. discharge followup: the patient was to follow up in the brain clinic in two weeks. the staples should be removed on postoperative day 10; his surgery date was . the staples should be removed on . , procedure: other operations on extraocular muscles and tendons other excision or destruction of lesion or tissue of brain other immobilization, pressure, and attention to wound diagnoses: diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled secondary malignant neoplasm of brain and spinal cord personal history of malignant melanoma of skin radiological procedure and radiotherapy as the cause of abnormal reaction of patient, or of later complication, without mention of misadventure at time of procedure other ill-defined cerebrovascular disease 

Answer: The patient is high likely exposed to