| Theme |
Magnifying Endoscopic Diagnosis of Gastro‒intestinal Carcinomas |
| Title |
Magnifying Endoscopic Diagnosis for Superficial Non—ampullary Duodenal Epithelial Tumor |
| Author |
Yorimasa Yamamoto |
Department of Gastroenterology, Showa University Fujigaoka Hospital |
| Author |
Yusuke Horiuchi |
Division of Gastroenterological Internal Medicine, Cancer Institute Hospital |
| Author |
Masami Omae |
Division of Gastroenterological Internal Medicine, Cancer Institute Hospital |
| Author |
Toshiaki Hirasawa |
Division of Gastroenterological Internal Medicine, Cancer Institute Hospital |
| Author |
Toshiyuki Yoshio |
Division of Gastroenterological Internal Medicine, Cancer Institute Hospital |
| Author |
Akiyoshi Ishiyama |
Division of Gastroenterological Internal Medicine, Cancer Institute Hospital |
| Author |
Tomohiro Tsuchida |
Division of Gastroenterological Internal Medicine, Cancer Institute Hospital |
| Author |
Junko Fujisaki |
Division of Gastroenterological Internal Medicine, Cancer Institute Hospital |
| [ Summary ] |
Recently, superficial non‒ampullary duodenal epithelial tumors (SNADETs), which are incidentally discovered in screening endoscopy, are increasingly being detected. In general, a biopsy is performed for a definite diagnosis of gastrointestinal tumors ; however, the accuracy of biopsy for SNADETs is not high, and submucosal fibrosis under the lesion often occurs after biopsy. Therefore, detailed examination by using magnifying endoscopy with narrow band imaging (ME‒NBI) is recommended instead of biopsy. In ME‒NBI, the microsurface (MS) and microvascular (MV) pattern are evaluated for a qualitative diagnosis of SNADETs. Especially, as an irregular MV pattern might be equivalent to a biopsy for cancer diagnosis, we believe that ME‒NBI is useful as an optical biopsy technique for SNADETs. |