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 33 year-old male status post gastric bypass surgery for morbid obesity on . past medical history: obesity, degenerative joint disease, heartburn, headache. past surgical history: orchiectomy in , because of an undistended right testicle. medications at home: advil. allergies: no known drug allergies. physical examination: blood pressure 120/70. pulse 82. respiratory rate 16. heart regular rate and rhythm. lungs clear to auscultation bilaterally. abdomen was soft, obese, nontender with bowel sounds. extremities had no edema. electrocardiogram was normal sinus rhythm. hospital course: the patient was taken to the operating room on for a roux-en-y gastric bypass. there were no complications. estimated blood loss was 150 cc. on postoperative day number one there was increased blood from the nasogastric tube approximately 150 cc. the patient was noted to be diaphoretic, lightheaded and nauseous without complaints of chest pain or shortness of breath. at that point he was transferred to the intensive care unit where his hematocrit continued to fall. he was transfused 6 units of packed red blood cells in total and 2 units of fresh frozen platelets. his hematocrit dipped to a low of 18%, but then after the transfusions stabilized at around 28%. on the patient's hematocrit was stable and there was no bleeding from the nasogastric tube. he was then transferred back to the floor on in stable condition. since then his hematocrit has continued to remain stable at approximately 28%. on discharge the patient has a stable hematocrit. he is tolerating a stage three diet well. discharge medications: roxicet po for pain one to two teaspoons q 4 hours, ranitidine, actigall 300 mg b.i.d. for six months, vitamin b-12 1000 micrograms po q day times two months. the patient will follow up in surgical nutrition clinic and follow up with dr. in two weeks. , m.d. dictated by: medquist36 procedure: high gastric bypass diagnoses: hemorrhage complicating a procedure surgical operation with anastomosis, bypass, or graft, with natural or artificial tissues used as implant causing abnormal patient reaction, or later complication, without mention of misadventure at time of operation morbid obesity 

Answer: The patient is high likely exposed to