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: patient recorded as having no known allergies to drugs attending: chief complaint: progressive headache, and intermittant gagging major surgical or invasive procedure: procedure : 1. bilateral posterior fossa craniectomy for tumor resection. 2. stereotactic guidance. 3. microscopic dissection. 4. pericranial graft harvest for secondary dural repair history of present illness: indications: this is a 23-year-old right-handed woman who was referred to my office for a left-sided cervicomedullary junction tumor with significant mass effect. of note, the patient had complained of progressive headache as well as intermittent gagging. given her symptoms and the significant mass effect of the tumor, she elected to undergo an elective resection of the tumor. past medical history: s/p child birth social history: resides at home in with fiance, and young daughter. family history: family history of schwannomatosis physical exam: on discharge: aox3, full strength and motor function throughout upper and lower extremities. sensation also intact. perrl. visual fields grossly intact. wound is clean, dry and intact. pertinent results: labs on admission: 06:34pm blood wbc-28.7*# rbc-3.84* hgb-11.2* hct-33.7* mcv-88 mch-29.1 mchc-33.1 rdw-13.4 plt ct-395 06:34pm blood pt-14.5* ptt-24.2 inr(pt)-1.3* 06:34pm blood glucose-207* urean-11 creat-0.6 na-143 k-4.7 cl-114* hco3-20* angap-14 06:34pm blood calcium-7.6* phos-5.1* mg-1.9 labs on discharge: 07:05am blood wbc-11.0 rbc-4.04* hgb-12.0 hct-34.1* mcv-84 mch-29.6 mchc-35.0 rdw-13.5 plt ct-356 07:05am blood glucose-94 urean-15 creat-0.5 na-137 k-3.8 cl-101 hco3-26 angap-14 07:05am blood calcium-9.1 phos-3.7 mg-2.0 imaging: mri head : impression: status post resection of left cerebellopontine angle mass. there is no evidence of unexpected post-operative findings. no hydrocephalus. the mass appears to have considerably resected with suggestion of a small area of residual enhancement at the expected upper margin of the mass. further followup can help in determination residual enhancement. pathology: diagnosis: 1. "left sided skull-based tumor" (a-b):schwannoma. 2. "left sided skull-based tumor" (c-d):schwannoma. 3. "left sided skull-based tumor" (e-f):schwannoma. note: the tumor is composed of spindle cells arranged in short fascicles with nuclear palisading. immunohistochemical stains are diffusely positive for s100 and negative for ema. brief hospital course: patient was electively admitted to the neurosurgery service on for resection of a presumed posterior fossa schwanoma. she tolerated the procedure well, and was monitored with icu level care for pod#0-2. on pod#3 she was transferred to the neurosurgery step down unit. a speech and swallow evaluation was done. she was determined to require a mechanical soft diet with thin liquids, and all pills to be crushed. on , she was seen by physical therapy and determined to be appropriate to be discharged to home with the need for services. she was also seen by social work to assist with her coping of the surgery in the setting of a young child, at home. pathology confirmed schwanoma. the patient was discharged on . medications on admission: none discharge medications: 1. acetaminophen 325 mg tablet sig: 1-2 tablets po q6h (every 6 hours) as needed. 2. docusate sodium 100 mg capsule sig: one (1) capsule po bid (2 times a day). disp:*60 capsule(s)* refills:*2* 3. hydromorphone 2 mg tablet sig: 1-2 tablets po q4h (every 4 hours) as needed for pain: no driving while on narcotics. disp:*50 tablet(s)* refills:*0* 4. methocarbamol 500 mg tablet sig: one (1) tablet po tid (3 times a day) as needed for muscle spasm. disp:*30 tablet(s)* refills:*0* 5. nystatin 100,000 unit/ml suspension sig: five (5) ml po q8h (every 8 hours) as needed for oral thrush for 2 days. disp:*30 ml* refills:*0* 6. prilosec otc 20 mg tablet, delayed release (e.c.) sig: one (1) tablet, delayed release (e.c.) po twice a day. disp:*60 tablet, delayed release (e.c.)(s)* refills:*2* discharge disposition: home discharge diagnosis: left cerebellopontine junction tumor; schwanoma. discharge condition: neurologically stable discharge instructions: general instructions ?????? have a friend/family member check your incision daily for signs of infection. ?????? take your pain medicine as prescribed. ?????? exercise should be limited to walking; no lifting, straining, or excessive bending. ?????? you may wash your hair after 10 days. before that time, you may have a friend or family member help you wash around the area. ?????? you may shower before this time using a shower cap to cover your head. ?????? increase your intake of fluids and fiber, as narcotic pain medicine can cause constipation. we generally recommend taking an over the counter stool softener, such as docusate (colace) while taking narcotic pain medication. ?????? unless directed by your doctor, do not take any anti-inflammatory medicines such as motrin, aspirin, advil, and ibuprofen etc. ?????? clearance to drive and return to work will be addressed at your post-operative office visit. call your surgeon immediately if you experience any of the following ?????? new onset of tremors or seizures. ?????? any confusion or change in mental status. ?????? any numbness, tingling, weakness in your extremities. ?????? pain or headache that is continually increasing, or not relieved by pain medication. ?????? any signs of infection at the wound site: redness, swelling, tenderness, or drainage. ?????? fever greater than or equal to 101?????? f. followup instructions: follow-up appointment instructions ??????please return to the office in days for a wound check. ??????follow-up with dr. in 1 month. call for an appointment. please have a non-contrast head ct prior to the appointment. procedure: other operations on extraocular muscles and tendons other excision or destruction of lesion or tissue of brain diagnoses: benign neoplasm of brain other acute postoperative pain dysphagia, pharyngeal phase 

Answer: The patient is high likely exposed to