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 53 year old man status post esophagogastrectomy by dr. on , recently discharged on , now presented to the emergency department complaining of melena. patient has had approximately three days of bloody liquid stools. patient also presents with lightheadedness and shortness of breath on standing. patient denies bright red blood per rectum. patient has some nausea, but denies hematemesis or coffee ground emesis. no fever. no chest pain. patient is anticoagulated with coumadin for a history of dvt/pe. past medical history: dysphagia. diabetes type 2. hypercholesterolemia. seizure disorder. bipolar disorder. history of pe in . past surgical history: status post esophagogastrectomy on . status post incision and drainage of perirectal abscess. medications: coumadin 6 mg q.d., divalproex 500 b.i.d., glyburide 5 b.i.d., lipitor 10 q.d., metformin 500 b.i.d., talfan 2 mg q.d., serevent metered dose inhaler, albuterol inhaler. social history: denies history of alcohol or tobacco use. physical examination: temperature 97, pulse 100, blood pressure 140/70, respiratory rate 22, o2 sat 97%. patient was comfortable, laying in bed. patient had intact extraocular eye movements. pupils were equal and round and reactive to light. there was no icterus. oropharynx had no lesions. mucous membranes were moist. lungs were clear to auscultation bilaterally. cardiovascular exam was regular rate and rhythm. the esophagogastrectomy incision was clean, dry and intact with no erythema. abdomen was soft, distended, tympanitic and nontender to palpation. rectal exam was guaiac positive. extremities were without cyanosis, clubbing or edema. laboratory data: white count was 8.0, hematocrit 25.8, platelets 440. pt was 23.3, ptt 27.2, inr 3.6. chemistries showed potassium of 5.0, all other chemistries were normal. hospital course: the patient was admitted to the surgical icu for further evaluation. patient was kept npo and was started on protonix. on hospital day one patient received two units of packed red blood cells and two units of ffp. patient's hematocrit was checked serially every six hours. foley catheter was placed to measure urine output. patient was started on lactated ringer for volume resuscitation. on hospital day two patient received another two units of packed red blood cells and two units of ffp. patient's hematocrit gradually increased to 31.2 on hospital day two and inr decreased to 1.6 on hospital day two. a gi consult was obtained for possible endoscopy. gi recommended holding anticoagulant and correcting inr before proceeding with endoscopy. on hospital day three patient's hematocrit gradually stabilized to around 30 and he did not need any further blood transfusions. patient's inr also stabilized to 1.5. at this time it was felt that patient was stable enough that the risks of endoscopy would outweigh the benefits and, therefore, endoscopy was held. on hospital day four patient was transferred out onto the regular for management. patient's hematocrit was followed every six hours and showed a stable hematocrit of 32 on hospital day four. patient was started on a post gastrectomy diet on hospital day four and iv was heplocked. patient received 3 mg of coumadin on the evening of hospital day four for his history of dvt/pe. serial hematocrit was changed to q.d. on hospital day five patient's hematocrit was stable at 35.2 and inr increased to 1.7. patient received another dose of 2 mg of coumadin on the evening of hospital day five. on hospital day six patient was stable for discharge. patient's incision staples were moved on hospital day five and steri-strips were applied to the incision. condition on discharge: stable. discharge status: home with services. discharge medications: 1. coumadin 3 mg p.o. q.h.s. 2. protonix 40 mg p.o. q.d. 3. fluticasone 110 mcg two puffs b.i.d. 4. perphenazine 2 mg p.o. q.h.s. 5. albuterol inhaler. 6. solu-medrol inhaler. 7. lipitor 10 mg p.o. q.d. 8. divalproex 500 mg p.o. b.i.d. followup: the patient should follow up at clinic on , for monitoring of inr. patient should also follow up with dr. in one to two weeks. please call dr. office for an appointment. patient was instructed to come back to the emergency department if patient has new onset of bright red blood per rectum. , m.d. dictated by: medquist36 procedure: arterial catheterization diagnoses: abnormal coagulation profile intestinal bypass or anastomosis status diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled other convulsions other specified cardiac dysrhythmias hypotension, unspecified blood in stool bipolar i disorder, most recent episode (or current) unspecified 

Answer: The patient is high likely exposed to