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: heparin agents / fish product derivatives / keflex / iodine; iodine containing / penicillins attending: chief complaint: black stool in ostomy bag. major surgical or invasive procedure: egd on . history of present illness: the pt. is an 84 year-old gentleman with a history of metastatic pancreatic cancer, hypertension, diabetes mellitus and pe/dvt on anticoagulation who presented to the ed complaining of black stool in his colostomy bag. he noted that he had been having loose bowel movements/diarrhea which were black in color. at the time of admission, he denied abdominal pain, nausea, vomiting, fever, chills, shortness of breath, palpitations, dizziness or lightheadedness, or chest pain. he noted that he has had difficulty swallowing recently and had one episode of "dry heaves" on the morning of admission. in the ed, he was found to have guaiac positive black stool in his ostomy bag. an ng tube was placed and was lavaged resulting in bright red blood that was unable to clear with saline. he was admitted to the micu for presumed upper gi bleed. past medical history: 1. metastatic pancreatic ca- diagnosed with omental biopsy during ex-lap and decompressible colostomy. now with extensive intraperitoneal carcinomatosis-- palliative chemo(gemcitabine) has been deferred by patient over last few months 2. hx of sbo- medically managed last admission 3. splenic vein thrombosis with varices 4. hx dvt/pe, s/p ivc filter in 5. hit 6. benign colon polyps 7. htn- on metoprolol 8. dm- on oral agents 9. pvd- s/p left lower extremity bypass surgery in 10.post-op afib temporarily on amio- self d/c'd in 11.hypothyroidism social history: the pt. is a retired chef. he is married, lives with wife. denies tobacco or illicit drug use; occasional etoh in past, none recently. he is originally from venice, and moved to the united states at age 14. family history: father died of cardiac disease. mother had breast cancer. one sibling, a brother with gastric cancer. physical exam: vitals: t: 96.5f p: 100(83-101) r: 19 bp: 131/52 (92-144/70-85) sao2: 98% ra general: awake, alert, nad. heent: nc/at, perrl, eomi without nystagmus, no scleral icterus noted, mmm, no lesions noted in op neck: supple, no jvd or carotid bruits appreciated pulmonary: lungs cta bilaterally without r/r/w cardiac: tachycardic, rr, nl. s1s2, no m/r/g noted abdomen: soft, nt/nd, normoactive bowel sounds, no masses or organomegaly noted, ostomy in ruq with brown stool. extremities: no c/c/e bilaterally, 2+ radial, dp and pt pulses b/l. lymphatics: no cervical, supraclavicular, axillary or inguinal lymphadenopathy noted. skin: no rashes or lesions noted. neurologic: -mental status: alert, oriented x 3. able to relate history without difficulty. -cranial nerves: ii-xii intact -motor: normal bulk, strength and tone throughout. no abnormal movements noted. -sensory: no deficits to light touch, pinprick, vibration or proprioception throughout. -cerebellar: no nystagmus, dysarthria, intention or action tremor, dysdiadochokinesia noted. fnf and hks wnl bilaterally. -dtrs: 2+ biceps, triceps, brachioradialis, patellar and ankle jerks bilaterally. plantar response was flexor bilaterally. pertinent results: studies at admission: ekg: nsr at 80bpm, q's in iii and avf with poor voltage inferiorly, no st/twave changes from prior ekg kub: nitinol filter. there is an ng tube with tip in the stomach. there is barium contrast in the rectum. no dilated loops of small bowel are seen. there is no unknown specific small bowel gas pattern. there is a small amount of air in the cecum and descending colon. labs on admission: 01:00pm blood wbc-5.3 rbc-4.23* hgb-11.7* hct-33.7* mcv-80* mch-27.7 mchc-34.8 rdw-16.3* plt ct-220# 01:00pm blood pt-20.7* ptt-30.1 inr(pt)-2.7 01:00pm blood glucose-141* urean-32* creat-1.2 na-138 k-4.2 cl-100 hco3-28 angap-14 01:00pm blood calcium-9.2 phos-3.5 mg-1.6 labs on discharge: 05:10am blood hct-29.4* brief hospital course: 1.upper gi bleed: shortly after admission, the gastroenterology service performed an egd. this showed gastric fundal variceal bleeding with large blood clot in the fundus and abnormal mucosa in the stomach. he was given 4u ffp, 2u prbc, 10mg sc vitamin k, started on iv octreotide, and iv ppi on arrival. he remained on an octreotide drip for five days. his hematocrits were cycled roughly q8hours and were noted to be stable. he was maintained on a ppi . he had no further episodes of melena. he was discharged on p.o. protonix b.i.d. and instructed to discontinue coumadin for fear of a repeat episode of gastrointestinal bleeding. 2. htn: the pt's blood pressure was stable for the duration of the hospital stay. he was restarted on metoprolol on hospital day four. 3. dm2: he was initially managed with a sliding scale of regular insulin. once he began to take p.o., glipizide was re-introduced. 4. hypothyroidism: the pt. was maintained on levothyroxine. medications on admission: 1. levoxyl 25 mcg once a day. 2. glipizide 5 mg once a day. 3. coumadin 2.5 mg every other day. 4. metoprolol tartrate 25 mg tablet . discharge medications: 1. glipizide 5 mg tablet sig: one (1) tablet po daily (daily). 2. levothyroxine sodium 25 mcg tablet sig: one (1) tablet po daily (daily). 3. pantoprazole sodium 40 mg tablet, delayed release (e.c.) sig: one (1) tablet, delayed release (e.c.) po q12h (every 12 hours). disp:*60 tablet, delayed release (e.c.)(s)* refills:*2* 4. metoprolol tartrate 25 mg tablet sig: one (1) tablet po twice a day. discharge disposition: home with service facility: discharge diagnosis: -upper gastrointestinal bleed, likely from gastric varices -pancreatic cancer -hypertension -hypothyroidism -type 2 diabetes mellitus discharge condition: stable. discharge instructions: please continue to take all of your medications as prescribed. you should no longer take coumadin (warfarin). also, note that you have been placed on a new medication called protonix. if you experience any further episodes of abdominal pain, black stool, bloody vomit, chest pain, shortness of breath or any other symptoms that are concerning to you, please call your primary care doctor or come to the emergency department for urgent evaluation. followup instructions: provider: , md where: hematology/oncology phone: date/time: 2:30 please call dr. office at to schedule a follow-up appointment at a time convenient for you within the next 7-10 days. procedure: other endoscopy of small intestine insertion of other (naso-)gastric tube gastric lavage transfusion of packed cells transfusion of other serum diagnoses: unspecified essential hypertension diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled iron deficiency anemia secondary to blood loss (chronic) unspecified acquired hypothyroidism atrial fibrillation blood in stool long-term (current) use of anticoagulants personal history of venous thrombosis and embolism anticoagulants causing adverse effects in therapeutic use hematemesis varices of other sites other specified disorders of stomach and duodenum colostomy status other diseases of spleen other specified gastritis, without mention of hemorrhage malignant neoplasm of tail of pancreas disseminated malignant neoplasm without specification of site 

Answer: The patient is high likely exposed to