Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Koei Nihei is active.

Publication


Featured researches published by Koei Nihei.


Pancreas | 2009

Liver perfusion chemotherapy with 5-Fluorouracil followed by systemic gemcitabine administration for resected pancreatic cancer: preliminary results of a prospective phase 2 study.

Isao Kurosaki; Yasuyuki Kawachi; Koei Nihei; Yoshiaki Tsuchiya; Takashi Aono; Naoyuki Yokoyama; Takeaki Shimizu; Katsuyoshi Hatakeyama

Objectives: Liver perfusion chemotherapy (LPC) for pancreatic cancer has been rarely undertaken in a postoperative adjuvant setting. We evaluated the feasibility and antitumor efficacy of LPC with 5-fluorouracil (5-FU) followed by gemcitabine treatment. Methods: This prospective study enrolled 27 patients who underwent pancreatic resection and subsequent LPC + gemcitabine treatment during a 3-year period. The liver was infused with 5-FU (125 mg/body per day per route) via both routes of hepatic artery and portal vein for more than 21 days. After that, gemcitabine (1000 mg/m2) was administered biweekly. Results: Portal vein thrombosis developed in 1 patient, but 89% patients tolerated LPC for more than 21 days with no life-threatening complication. Systemic administration of gemcitabine was accomplished in 93%; however, 1 patient died of serious capillary leak syndrome. No grade 4 toxicity was recorded, except for that patient. Median survival time and disease-free survival were 27.5 and 24.5 months, respectively. Hepatic relapse was observed in 25.9% (n = 7). Survival was in favor of paraaortic node-negative cases (n = 20) with a 2-year survival of 68.7%. Conclusions: Liver perfusion chemotherapy was feasible with acceptable toxicity. Systemic use of gemcitabine also seems to be safe for the most part. This adjuvant chemotherapy shows promising survival benefit and seems to be indicative to paraaortic node-negative tumors.


Surgery Today | 2000

Thoracic Esophagectomy Combined with Pylorus-Preserving Pancreatoduodenectomy in a One-Stage Procedure: Report of a Case

Isao Kurosaki; Katsuyoshi Hatakeyama; Koei Nihei; Tsutomu Suzuki; Kazuhiro Tsukada

We present herein the case of a patient who underwent a thoracic esophagectomy and pylorus-preserving pancreatoduodenectomy in a one-stage procedure for synchronous double primary cancer of the thoracic esophagus and the head of the pancreas (intraductal papillary tumor). To reconstruct the upper alimentary tract with the stomach, the gastroduodenal artery and right gastroepiploic vein were successfully skeletonized and preserved. The postoperative course was uneventful and the patient is currently well, 5 years after surgery.


Digestive Diseases and Sciences | 2002

Remote development of hepatocellular carcinoma in patients with liver cirrhosis type B serologically cured for HBs antigenemia with long-standing normalization of ALT values.

Shogo Okoshi; Masato Igarashi; Takeshi Suda; Hiroshi Iwamatsu; Kohji Watanabe; Kiyoshi Ishihara; Norio Ogata; Minoru Nomoto; Toru Takahashi; Takafumi Ichida; Hitoshi Asakura; Koei Nihei; Isao Kurosaki

In this report, we examine two patients with chronic hepatitis B virus (HBV) infection that had been diagnosed as precirrhosis or liver cirrhosis more than a decade previously. These patients had been cleared of HBsAg and had developed anti-HBs at a later time, yet hepatocellular carcinoma (HCC) eventually occurred. Both patients had been found negative for HBV DNA, using sensitive methods. Interestingly, a nontumor specimen of the liver obtained at surgical resection showed a marked reduction of fibrosis when compared to the histology observed when the patient was diagnosed as precirrhosis. Our findings suggest that the fibrosis from liver cirrhosis had been absorbed to a large extent during the long-term absence of active viremia and the normalization of alanine aminotransferase (ALT) levels. However, the cancer-prone biological characteristics of liver cirrhosis remained. Thus, patients with liver cirrhosis due to past chronic hepatitis B should be monitored carefully for the development of HCC even if HBV infection has been serologically resolved.


Journal of Hepato-biliary-pancreatic Surgery | 2004

Celiac axis stenosis in pancreaticoduodenectomy.

Isao Kurosaki; Katsuyoshi Hatakeyama; Koei Nihei; Manabu Oyamatsu


Hepato-gastroenterology | 2003

Pancreaticogastrostomy: unreliable long-term pancreatic duct patency.

Isao Kurosaki; Katsuyoshi Hatakeyama; T. Kobayashi; Koei Nihei


Surgery Today | 2013

Portal vein infusion chemotherapy with gemcitabine after surgery for pancreatic cancer

Chie Kitami; Isao Kurosaki; Yasuyuki Kawachi; Koei Nihei; Yoshiaki Tsuchiya; Tatsuya Nomura; Masahiro Minagawa; Kabuto Takano; Katsuyoshi Hatakeyama


Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2007

A CASE OF STENOSIS OF FIRST PORTION OF JEJUNUM CAUSED BY ADHESION WITH TRANSMESOCOLONIC HIATUS

Tomoyuki Kakuta; Satoshi Suzuki; Takeshi Mishina; Koei Nihei; Akira Iwaya; Mami Watanabe


Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2000

TWO CASES OF INTUSSUSCEPTION OF THE SMALL INTESTINE PROBABLY CAUSED BY INDWELLING ILEUS TUBE

Satoshi Suzuki; Takeshi Mishina; Koei Nihei; Satoru Yamasaki; Yuko Tosaka; Yoichi Matsubara


Hepato-gastroenterology | 1999

The role of lymphatic drainage of the liver in gallbladder cancer: a case report.

Isao Kurosaki; Kazuhiro Tsukada; H. Ohzeki; Koei Nihei; A. Nishimura; Katsuyoshi Hatakeyama


新潟医学会雑誌 | 2010

4 肝・膵臓外科領域における内視鏡手術の進歩(各領域における内視鏡手術の進歩,第644回新潟医学会)

昌広 皆川; 功 黒崎; 勝義 畠山; 幸栄 二瓶; Masahiro Minagawa; Isao Kurosaki; Katsuyoshi Hatakeyama; Koei Nihei

Collaboration


Dive into the Koei Nihei's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Yasuyuki Kawachi

Tokyo Medical and Dental University

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge