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Featured researches published by Hidefumi Yagi.


Pathology International | 1990

Multiple Carcinomata Associated with Anomalous Arrangement of the Biliary and Pancreatic Duct System

Toshio Morohoshi; Toshiaki Kunimura; Mikio Kanda; Hiroyoshi Takahashi; Hidefumi Yagi; Kouji Shimizu; Akio Nakayoshi; Katsumi Asanuma

Two rare cases of multiple neoplasms occurring in association with anomalous arrangement of the pancreatobiliary duct system (PBD) are reported. Ultrasonography, computed tomography and endoscopic retrograde cholangiopancreatography revealed cholecystic tumor in the first case, and multiple choledochocholecystic tumors in the second case. In the first case, pancreatic tumor was discovered two years after cholecystectomy. In the second case, a pancreatic tumor was discovered incidentally in the removed pancreatic head after the operation. The histology of all of these biliary and pancreatic tumors revealed papillary adenocarcinoma in both patients, and additionally small pancreatic endocrine tumors were found in the first case. Postoperative prognosis was comfortably favorable in both patients. In a literature survey, two other cases of double carcinomata associated with anomalous PBD were found, in which the tumors showed the same histology of papillary adenocarcinoma and the postoperative prognoses were also good. These mutual clinicopathological features appear to suggest that this abnormal condition acts as a carcinogenetic risk factor in the pancreatic duct and the biliary duct system, and may finally cause multiple carcinomata in the PBD. Acta Pathol Jpn 40: 755‐763, 1990.


European Journal of Surgery | 2000

Liver function assessed by increased rate of Portal venous blood flow after oral intake of glucose

Shoji Sasaya; Hidefumi Yagi; Masahiko Yamaguchi; Gaku Kigawa; Hiroshi Nakano; Takemasa Midorikawa; Hideaki Nagasaki; Kaoru Kumada

OBJECTIVE To find out whether an increased rate of portal venous blood flow after oral intake of glucose could be used to estimate liver function. DESIGN Prospective study. SETTING University hospital, Japan. SUBJECTS Sixty patients, of whom 23 had hepatocellular carcinoma and liver cirrhosis, 21 had tumours metastatic to normal liver, and 16 had obstructive jaundice treated with percutaneous transhepatic biliary drainage (PTBD). INTERVENTION Portal flow was measured after oral intake of glucose 75 g using pulsed-Doppler ultrasonography. RESULTS The ratio of portal flow 30 minutes after glucose intake to that before intake (PVFR30) was significantly lower in cirrhotic patients than in those with metastases and a normal liver. A PVFR30 of less than 1.5 indicated impaired hepatic function assessed by the Child-Pugh scores, indocyanine green clearance test, prothrombin time, and hepaplastin test. It also indicated less reduction in total bilirubin concentrations in the first week after PTBD. CONCLUSIONS Results suggest that PVFR30 can be used to estimate liver function and predict outcome after PTBD.


Journal of Hepato-biliary-pancreatic Surgery | 2000

Microwave coagulation therapy for hepatocellular carcinoma.

Takemasa Midorikawa; Kaoru Kumada; Hiroaki Kikuchi; Kazuyoshi Ishibashi; Hidefumi Yagi; Hideaki Nagasaki; Hiroshi Nemoto; Mitsuo Saitoh; Hiroshi Nakano; Masahiko Yamaguchi; Yongmu Koh; Hitoshi Sakai; Yasuo Yoshizawa; Yutaka Sanada; Makoto Yoshiba


Hepato-gastroenterology | 2004

Microwave coagulation therapy for a liver tumor involving the root of the left hepatic vein of the residual liver after extended right hepatectomy

Takemasa Midorikawa; Hiroaki Kikuchi; Kazuyoshi Ishibashi; Mitsuo Saito; Toshiyuki Hatakeyama; Shigeki Kadokura; Tadashi Matsumoto; Kiyoshi Miyakawa; Kouji Maezawa; Osamu Uemichi; Hisayuki Izuno; Kunitoshi Aita; Hiroshi Nemoto; Hideaki Nagasaki; Hidefumi Yagi


The Japanese Journal of Gastroenterological Surgery | 2009

A Case with a Diagnosis of Omental Hemorrhage before Surgery

Katsumi Makita; Takemasa Midorikawa; Hidefumi Yagi; Yasuro Fujiwara; Kunitoshi Aita; Michio Sakamoto; Terukazu Yokoyama; Masahiko Ookubo


Journal of Microwave Surgery | 1995

Laparotomic microwave coagulation of hepatoma : Report of a case

Takemasa Midorikawa; Hiroshi Machida; Hiroaki Kikuchi; Junkichi Kim; Hitoshi Sakai; Hiroshi Nakano; Youmo Koh; Hiroyoshi Takahashi; Hidefumi Yagi; Yutaka Sanada; Kaoru Kumada


Nihon Gekakei Rengo Gakkaishi (journal of Japanese College of Surgeons) | 2013

Two Cases of Non-Occlusive Mesenteric Ischemia with Different Outcomes

Katsumi Makita; Takemasa Midorikawa; Hidefumi Yagi; Kunitoshi Aita; Michio Sakamoto


Archive | 2009

A Case of Retroperitoneal Dedifferentiated Liposarcoma Presented as a Swelling Mass in Left Inguinal Area

Katsumi Makita; Takemasa Midorikawa; Hidefumi Yagi; Yasuro Fujiwara; Kunitoshi Aita; Michio Sakamoto; Ryohei Sakamoto; Fuminori Ishii; Yuichi Yamashita


Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2008

A CASE OF ABDOMINAL WALL ABSCESS CAUSED BY A SMALL BOWEL DIVERTICULUM ASSOCIATED WITH A STRANGULATED ILEUS DUE TO A BAND BETWEEN AN ABDOMINAL WALL ABSCESS AND THE ILEUM

Yasuro Fujiwara; Takemasa Midorikawa; Hidefumi Yagi; Kunitoshi Aita; Katsumi Makita; Michio Sakamoto


Nihon Gekakei Rengo Gakkaishi (journal of Japanese College of Surgeons) | 2008

A Case of CA19-9 Possitive Early Gastric Cancer with Interstitial Pneumonia Reveal the High Level of Serum CA19-9 after Surgery

Katsumi Makita; Takemasa Midorikawa; Hidefumi Yagi; Yasuro Fujiwara; Kunitoshi Aita; Michio Sakamoto; Masahiko Ookubo; Atsuji Matsuyama

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