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 an 86 year-old male with a past medical history significant for type 2 diabetes mellitus, invasive squamous cell carcinoma status post mohs surgery of left lower extremity who presents to the emergency department following two black stools the day prior to admission. per vna the patient stopped his aspirin . at home he was tachy to 138 with a blood pressure of 140/80. he was referred to the emergency department by vna. the patient states he has been feeling tired for the last few days. he denies any chest pain, shortness of breath, heart racing. he would feel a little lightheaded after walking one block. he denies any new bruising, bleeding, no nausea, vomiting or abdominal pain, heartburn is present 15 years ago, but none recently. he has had back pain a few days ago and took two tylenol. in the emergency department he was given intravenous fluids at 150 an hour, 2 units of packed red blood cells and intravenous protonix. he had an nasogastric lavage, which produced coffee ground emesis. no fresh blood. no clots per emergency department note. did not clear after 500 cc. medications: 1. aspirin 81 stopped . 2. glucophage 1000 mg q.a.m., 500 q.h.s. 3. zocor 10 po q.d. past medical history: 1. invasive squamous cell carcinoma of the left lower extremity status post mohs surgery . 2. type 2 diabetes mellitus. 3. hypercholesterolemia. 4. right cataract surgery. 6. colonoscopy in . allergies: no known drug allergies. social history: he lives alone, has vna. he is widowed. no history of tobacco, alcohol or drug use. no pets. he has two sons. family history: colon cancer in his brother. or gastric cancer. physical examination: temperature 97.3. blood pressure 142/69. heart rate 119. respirations 16. in generally lying in bed. neck supple. no left anterior descending coronary artery. heent pupils are equal, round and reactive to light. nasogastric tube in place. extraocular movements intact. arcus senilis bilaterally. right cataract. oropharynx without lesions. cardiovascular tachy, no rubs or murmurs appreciated. respirations fine crackle at the bases bilaterally. abdomen soft, nontender, nondistended. normoactive bowel sounds. extremities no edema. 1+ dorsalis pedis pulses. left lower extremity with ulcerations. no erythema surrounding. rectal guaiac positive per emergency department. laboratory: significant for a white blood cell county of 16.3 with 92% neutrophils, 0 bands, 3 lymphocytes, 5 monocytes, hematocrit of 29.2, in it was 47 and in it was 34. platelets 346, mcv 105 with an rdw of 13.9. creatinine 1.1. a1c was 7.8. electrocardiogram showed sinus tachycardia at 115, normal axis. ct chest showed some abnormal thickening of the esophageal walls, large hiatal hernia. hospital course: 1. gastrointestinal bleed: the patient was admitted to the micu for upper gastrointestinal bleed. two large bore ivs were placed. intravenous fluids were given. intravenous protonix was given. the patient had an esophagogastroduodenoscopy the following day and during that time his hematocrit was followed closely. the patient was transfused 2 units initially in the emergency room and when his hematocrit did not bump he received a third unit. his esophagogastroduodenoscopy on showed normal stomach, normal duodenum, large hiatal hernia, esophageal ulcer. no anomalies of the esophageal mucosa, although there is a single ulcer in the hiatal hernia seen, therefore the esophagus was not biopsied. the patient's hematocrit stabilized and he was called out to the floor. he did not require further blood and his hematocrit remained stable. his gastrointestinal plan was for him to follow up in eight weeks for a repeat esophagogastroduodenoscopy to ensure the ulcer was healing and to continue on his protonix b.i.d. 2. diabetes: the patient was continued on his sliding scale, but once out of the unit was restarted on his oral medications. 3. history of cellulitis to his leg: the patient had cellulitis to his leg. he was continued with dressing changes. no antibiotics were given. 4. hematology: in addition to the packed red blood cells secondary to the patient's high mcv a b-12 level was checked and it was slightly low, therefore the patient was started on b-12 repletion. discharge condition: good. discharge diagnoses: 1. gastric ulcer. 2. barrett's esophagus. discharge status: to home with services. discharge medications: 1. simvastatin 20 po q.d. 2. protonix 40 one b.i.d. and then after eight weeks one po q.d. 3. metformin 1000 one q.a.m. 4. metformin 500 one q.p.m. 5. vitamin b-12 one microgram tablet one po q day. discharge follow up plans: 1. the patient will follow up with dr. in eight weeks for repeat esophagogastroduodenoscopy. 2. the patient will follow up with dr. in dermatology . 3. the patient will follow up with dr. . , m.d. dictated by: medquist36 procedure: other endoscopy of small intestine transfusion of packed cells diagnoses: anemia, unspecified pure hypercholesterolemia diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled diaphragmatic hernia without mention of obstruction or gangrene personal history of other malignant neoplasm of skin barrett's esophagus ulcer of esophagus with bleeding 

Answer: The patient is high likely exposed to