title: Poorly cohesive adenocarcinoma of the ampulla of Vater: a case report.
abstract: A 47-year-old Japanese male was submitted to pancreaticoduodenectomy for an ampullary cancer. Pathologically, the ampullary cancer was poorly cohesive adenocarcinoma without tubular structure. Moreover, locoregional lymph nodes were swollen with hypervascularity, plasmacytes infiltration, and hemorrhage. Our case seems to be different from usual poorly differentiated adenocarcinoma.
authors.affiliation: Department of Surgery, Japan Community Health Care Organization, Gunma Chuo Hospital, 1-7-13 Kouun-cho, Maebashi, Gunma, 371-0025, Japan. m07702048@gunma-u.ac.jp.
authors.forename: Hayato
authors.initials: H
authors.lastname: Yamauchi
authors.affiliation: Department of Diagnostic Pathology, Japan Community Health Care Organization, Gunma Chuo Hospital, Gunma, Japan. gch-sakurai@kl.wind.ne.jp.
authors.forename: Shinji
authors.initials: S
authors.lastname: Sakurai
authors.affiliation: Department of Surgery, Japan Community Health Care Organization, Gunma Chuo Hospital, 1-7-13 Kouun-cho, Maebashi, Gunma, 371-0025, Japan. asikaika.rt@gmail.com.
authors.forename: Kei
authors.initials: K
authors.lastname: Hagiwara
authors.affiliation: Department of Surgery, Japan Community Health Care Organization, Gunma Chuo Hospital, 1-7-13 Kouun-cho, Maebashi, Gunma, 371-0025, Japan. tomonoriyo@gmail.com.
authors.forename: Tomonori
authors.initials: T
authors.lastname: Yoshida
authors.affiliation: Department of Surgery, Japan Community Health Care Organization, Gunma Chuo Hospital, 1-7-13 Kouun-cho, Maebashi, Gunma, 371-0025, Japan. hiko-miki-yu723@kcd.biglobe.ne.jp.
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Tabe
authors.affiliation: Department of Surgery, Japan Community Health Care Organization, Gunma Chuo Hospital, 1-7-13 Kouun-cho, Maebashi, Gunma, 371-0025, Japan. fkswtkhr@gmail.com.
authors.forename: Takaharu
authors.initials: T
authors.lastname: Fukasawa
authors.affiliation: Department of Surgery, Japan Community Health Care Organization, Gunma Chuo Hospital, 1-7-13 Kouun-cho, Maebashi, Gunma, 371-0025, Japan. drkiriyama@yahoo.co.jp.
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Kiriyama
authors.affiliation: Department of Surgery, Japan Community Health Care Organization, Gunma Chuo Hospital, 1-7-13 Kouun-cho, Maebashi, Gunma, 371-0025, Japan. mfukuchi@saitama-med.ac.jp.
authors.forename: Minoru
authors.initials: M
authors.lastname: Fukuchi
authors.affiliation: Department of Surgery, Japan Community Health Care Organization, Gunma Chuo Hospital, 1-7-13 Kouun-cho, Maebashi, Gunma, 371-0025, Japan. naitohh@kl.wind.ne.jp.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Naitoh
authors.affiliation: Department of General Surgical Science (Surgery I), Gunma University, Graduate School of Medicine, Gunma, Japan. hkuwano@gunma-u.ac.jp.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kuwano
keywords: Ampullary cancer; Cohesive adenocarcinoma; Poorly differentiated adenocarcinoma