title: Endoscopic Findings of Enteropathy-Associated T-Cell Lymphoma Type II: A Case Series.
abstract: Enteropathy-associated T-cell lymphoma (EATL) is a rare extranodal T-cell lymphoma arising from the intestine. Two types of EATL have been reported. In contrast to the classic EATL type I, EATL type II occurs sporadically, is unrelated to celiac disease, and comprises 10% to 20% of all EATL cases. A total of five cases of EATL type II were diagnosed at our clinic from January 2009 to September 2012. Four of the five patients were diagnosed with the help of endoscopy. Among the four patients, two of the cases involved both the small and large intestines, whereas in the other two patients, EATL was limited to the small intestine. Common endoscopic findings included innumerable fine granularities (also called mosaic mucosal patterns) and diffuse thickening of the mucosa with a semicircular shallow ulceration in the lesions of the small bowel. In contrast, the endoscopic findings of the colon were nonspecific and could not distinguish EATL type II from other diseases. There are only few published reports regarding the representative endoscopic findings of EATL. Here, we present the clinical and endoscopic findings of four cases of EATL type II diagnosed by endoscopy.
authors.affiliation: Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Yun Soo
authors.initials: YS
authors.lastname: Hong
authors.affiliation: Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Young Sik
authors.initials: YS
authors.lastname: Woo
authors.affiliation: Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Gaeun
authors.initials: G
authors.lastname: Park
authors.affiliation: Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Kyungho
authors.initials: K
authors.lastname: Lee
authors.affiliation: Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Soo Hoon
authors.initials: SH
authors.lastname: Kang
authors.affiliation: Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Hyun Woo
authors.initials: HW
authors.lastname: Lee
authors.affiliation: Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Eun Ran
authors.initials: ER
authors.lastname: Kim
authors.affiliation: Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Sung Noh
authors.initials: SN
authors.lastname: Hong
authors.affiliation: Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Dong Kyung
authors.initials: DK
authors.lastname: Chang
authors.affiliation: Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Young Ho
authors.initials: YH
authors.lastname: Kim
authors.affiliation: Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Poong-Lyul
authors.initials: PL
authors.lastname: Rhee
authors.affiliation: Division of Gastroenterology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Jae J
authors.initials: JJ
authors.lastname: Kim
mesh_terms: D000368:Aged; D002446:Celiac Disease / Q000150:complications; D003113:Colonoscopy; D058527:Enteropathy-Associated T-Cell Lymphoma / Q000209:etiology / Q000473:pathology*; D005260:Female; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D007420:Intestine, Large / Q000473:pathology; D007421:Intestine, Small / Q000473:pathology; D008297:Male; D008875:Middle Aged
keywords: Double-balloon enteroscopy; Endoscopy; Enteropathy-associated T-cell lymphoma type II; Gastrointestinal lymphoma