抄録
A 67-year-old man was admitted to our hospital complaining of bloody stool and abdominal pain after eating raw oyster. He ate oyster with his colleague at restaurant. Before he ate oyster, he had normal stool. After eating raw oyster, 16 peaple had watery diarrhea but no one had bloody diarrhea.
One of them was diagnosed to have Small Round-Shaped Virus by stool culture. Laboratory tests showed leukocytosis and an elevated CRP level. First we diagnosed to food poisoning and patient was thought to have infective colitis, so we prescribed antibiotics. But his symptom still continued so we repeated endoscopic examinations.
At first endoscopic examination, we thought non-specific colitis pathologically so we continued to prescribed antibiotics. At second endoscopic examination, we suspected the amabiec dysentery and prescribed metronidazole. But his symptom still continued. At the third endscopic examination, he was diagnosed to have ulcerative colitis pathologically. It took about 2 months to diagnose. We started the medical therapy with steroid and 5-ASA and soon his symptom got better. At the forth examination, endoscopic fingings were getting better remarkably. Then he had MRSA lung abscess and we prescribed Vancomycin and he got better. After that he had bleeding gastric ulcer and was treated endoscopically.
