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: the patient is a 62 year-old female with a history of left total knee replacement on on coumadin who presented to the emergency department on with complaints of multiple episodes of bright red blood per rectum, crampy abdominal pain and lightheadedness. emergency department course: inr on admission was 3.1. initial blood pressure in the emergency department was 60/palpable. a cordis was placed in addition to large bore iv. the patient was given 4 units of blood, 10 of subcutaneous vitamin k and 4 units of fresh frozen platelets as well as 6.25 liters of normal saline. nasogastric lavage was negative for blood. hematocrit in the emergency department was 21.3. interventional radiology consulted, but no source of bleed. the patient was stabilized and transferred to the micu. past medical history: 1. gastroesophageal reflux disease. 2. echocardiogram in demonstrating ejection fraction of 55% and moderate concentric left ventricular hypertrophy. 3. psoriasis since treated with puva. 4. left breast cancer grade 1 invasive status post left mastectomy in . er positive. treated with tamoxifen. 5. osteoarthritis of the knee. 6. remove history of diabetes mellitus. hemoglobin a1c 6.5. past surgical history: 1. total knee replacement of left knee. 2. total abdominal hysterectomy and bilateral salpingo-oophorectomy . allergies: no known drug allergies. medications on admission: 1. coumadin. 2. oxycodone. 3. tamoxifen. 4. protonix. social history: the patient is widowed, currently works as a middle school teacher. before admission ambulating with walker. minimal alcohol use. no tobacco use. has two daughters who currently live in . family history: remote history of pancreatic cancer and lung cancer in two uncles. mother with diabetes mellitus. review of systems: positive only for a history of hemorrhoids, however, the patient denied ever having bleeding episodes as the current one. physical examination: pulse 93. blood pressure 153/38. respiratory rate 18. o2 sat 98% on room air. the patient is in no acute distress, obese woman sitting upright in bed. the rest of the physical examination was normal including chest, cardiovascular, abdomen and neurological examination. there was a right femoral wound from the cordis removal in the right thigh. there was no sign of active bleeding, infection or hematoma. laboratory: hematocrit of 29, pt 14.4, ptt 27.4, inr of 1.4. chem 7 was normal. hospital course: chest x-ray on demonstrated no acute cardiopulmonary abnormality. a mesenteric angiography performed on showed no sign of active gastrointestinal bleeding. a colonoscopy performed on demonstrated bleeding vessel in the transverse colon, which was clipped with a surgical clip. as well a colonoscopy demonstrated two small polyps and signs of diverticuli. a follow up colonoscopy was recommended for the next monday and the patient's hematocrit was actively monitored. the patient needed one more unit of packed red blood cells in the micu and one more unit on the floor. hematocrit stabilized around 29 and on discharge hematocrit was 28.2. the patient's baseline hematocrit runs between 24 and 34. a colonoscopy was performed on and two polyps were removed. however, the colonoscopy could only go as far as the hepatic flexure and a virtual colonoscopy is scheduled for an outpatient on . discharge medications: same as admission except coumadin has been discontinued. disposition: to home. discharge status: ambulating comfortably and stable. discharge diagnosis: large lower gastrointestinal bleed. , m.d. dictated by: medquist36 procedure: endoscopic polypectomy of large intestine endoscopic polypectomy of large intestine arteriography of other intra-abdominal arteries endoscopic destruction of other lesion or tissue of large intestine diagnoses: esophageal reflux acute posthemorrhagic anemia diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled personal history of malignant neoplasm of breast other shock without mention of trauma hemorrhage of gastrointestinal tract, unspecified benign neoplasm of colon diverticulosis of colon (without mention of hemorrhage) ventral, unspecified, hernia with obstruction 

Answer: The patient is high likely exposed to