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: relafen attending: chief complaint: left mediastinal mass major surgical or invasive procedure: left thoracotomy, excision of mediastinal mass, flexible bronchoscopy history of present illness: mr. is a 76-year-old gentleman with back discomfort, evaluated radiographically with a large posterior mediastinal process initially felt to be an aneurysm. ct and mri rule this out and found this to be a homogeneous solid posterior mediastinal lesion. fine-needle aspiration showed a spindle cell neoplasm. upper gi series showed no functional obstruction of the esophagus. past medical history: 1. ulcerative colitis s/p total proctocolectomy with a j-pouch in , status post an ileostomy takedown in . 2. gastroesophageal reflux disease. 3. history of partial small-bowel obstruction (4/). 4. hiatal hernia. 5. obstructive sleep apnea on home cpap (16 mm hg) but uses cpap very rarely. 6. lumbar spinal stenosis s/p laminectomy on 7. osteoporosis on fosomax 70 mg once per week 8. s/p appendectomy (ca. ) 9. s/p hernia repair (ca ) 10. anemia (refused for blood donation for autologous transfusion) social history: married-lives with wife, non-, no alcohol, works as water filtration treatment person. smoked 1 1/2 packs per day for 20 years. quit 40 years ago. family history: diabetes in grandmother. pancreatic cancer in grandmother. died of "old age" in their mid 80s. physical exam: 80 132/70 18 nad, aao cta rrr sntnd, well healed midline scar neuro: decreased sensation right lower extremity no lad no c/c/e pertinent results: cxr no pneumothorax post-chest tube pull. small left effusion and bibasilar atelectasis cxr impression: 1. right pneumothorax probably slightly decreased in size or resolved. 2. increased bibasilar opacities in the setting of lower lung volumes cxr impression: small bilateral pneumothoraces. chest tubes in good position. incidental note is made of subcutaneous emphysema along the left side of the neck in the left lateral chest wall. brief hospital course: pt was admitted to the thoracic surgery service s/p excision of left mediastinal mass. the patient tolerated the procedure well with no complications. for further detail of the procedure please refer to the operative note. on pod#2, chest tube was d/c'd and blakes were put to bulb suction. on pod#3, the remaining blakes were d/c'd with no complications. hospital/post operative course was uncomplicated. upon discharge, the patient was afebrile with all vitals stable, ambulating, tolerating po feeds, and with pain controlled. medications on admission: prevacid 30 mg qd discharge medications: 1. oxycodone-acetaminophen 5-325 mg tablet sig: 1-2 tablets po q4h (every 4 hours) as needed for pain. disp:*75 tablet(s)* refills:*0* discharge disposition: home discharge diagnosis: mediastinal mass discharge condition: good discharge instructions: call dr. office () if you experience any of the following symptoms: * fever (>101 f) or chills * new and continuing nausea or vomiting * abdominal or chest pain * shortness of breath * redness or drainage, swelling, warmth, or pus production around wound site * any other concerns if you experience clear drainage from your wounds, cover them with a clean dressing and stop showering until the drainage subsides for at least 2 days. no driving while taking pain medications. narcotics can cause constipation. please take an over the counter stool softener such as colace or a gentle laxative such as milk of magnesia if you experience constipation. you may resume your regular diet as tolerated. resume your home medications as previously directed. followup instructions: please call dr. office at on monday to schedule your follow up appointment for 2 weeks from now. procedure: fiber-optic bronchoscopy excision or destruction of lesion or tissue of mediastinum diagnoses: obstructive sleep apnea (adult)(pediatric) esophageal reflux osteoporosis, unspecified ulcerative colitis, unspecified benign neoplasm of mediastinum 

Answer: The patient is high likely exposed to