抄録
We presented the case of 73-year-old man with the chief complaint of the constipation and lower abdominal pain. Colonoscopic examination showed the slight elevated lesion at the bottom of the cecum without the appendical orifice. Magnifying endoscopic examination revealed type VN pit pattern surrounded by the lesion with type I pit pattern. Histological findings of specimen from the lesion with type VN pit pattern was mucinous adenocarcinoma. It is difficult to make a definite diagnosis of the carcinoma of the appendix, which is very rare. before surgery. It is useful to observe the cecum in detail.
