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: pcn systems review: cv: vss 118/50, hr 70s pulm: ls clear, sat high 90s gi: he finished his first unit of prbcs, his hct after this was 40 off an abg syringe. pt to receive golytely and to be seen by gi today - gi consulted on him in th ew and this was there recommendation. after he continued to bleed in the ew interventional radiology was called, they did not feel that he would benefit from their sevices at that time. pt had a med size maroon bm here, he was stable on his feet, oob to commode. gu: voiding via urinal procedure: colonoscopy other irrigation of (naso-)gastric tube diagnoses: acute posthemorrhagic anemia diabetes mellitus without mention of complication, type ii or unspecified type, not stated as uncontrolled loss of weight benign neoplasm of colon knee joint replacement diverticulosis of colon with hemorrhage hip joint replacement orthostatic hypotension 

Answer: The patient is high likely exposed to