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Y. Koizumi · SciRah

Researcher profile · Semantic Scholar

Y. Koizumi

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Y. Koizumi — researcher profile on SciRah

h-index: 4
Works: 32
Citations: 113

Most-cited papers

Infection of a Japanese Patient by Genotype 4 Hepatitis E Virus While Traveling in Vietnam
Y. Koizumi, N. Isoda, Yukihiro Sato, Takaaki Iwaki +6 more
2004Journal of Clinical Microbiology83 citations Open access
Semantic Scholar
Recurrent common bile duct stones composed of ursodeoxycholic acid: a report of four cases.
Shintaro Akiyama, Tsunao Imamura, T. Tamura, Y. Koizumi +3 more
2014Internal medicine10 citations Open access
Semantic Scholar
Treatment of biliary tract stones after gastrectomy in the era of laparoscopic cholecystectomy
M. Hashimoto, Tsunao Imamura, T. Tamura, R. Koyama +4 more
2016Journal of hepato-biliary-pancreatic sciences6 citations
Semantic Scholar
Adrenal Metastasis and Hemorrhage Secondary to Hepatocellular Carcinoma.
Shintaro Akiyama, Tsunao Imamura, R. Koyama, T. Tamura +2 more
2015Internal medicine5 citations Open access
Semantic Scholar
Feasibility of a thumb-controlled device in double-balloon enteroscopy-assisted ERCP
T. Tamura, D. Kikuchi, Tsunao Imamura, Y. Koizumi +3 more
2015Endoscopy3 citations Open access
Semantic Scholar
Change in size of hepatic hemangiomas during long-term observation: 80 lesions with observation for over 10 years
Kyoko Ogawa, K. Takeuchi, C. Okuda, T. Tamura +6 more
20142 citations
Semantic Scholar
A CASE OF CHOLECYSTOGASTRIC FISTULA
M. Hoshino, Tsunao Imamura, T. Tamura, Y. Koizumi +6 more
19922 citations Open access
Semantic Scholar
[Hypercoagulability after surgery of esophageal carcinoma].
Akira Usuba, R. Motoki, Masatoshi Watanabe, Y. Koizumi +6 more
1990[Zasshi] [Journal]. Nihon Kyobu Geka Gakkai1 citations
Semantic Scholar
Gastroenterological surgery for six patients with leukemia.
S. Terashima, Kentaro Mera, K. Miura, T. Abe +10 more
19881 citations Open access
Semantic Scholar
Implanting metallic stent for malignant stricture of the afferent loop caused by direct invasion of pancreatic cancer
M. Nakatani, Tsunao Imamura, Yoshiki Sato, Y. Urasaki +3 more
2019Progress of Digestive Endoscopy0 citations Open access
Semantic Scholar
A case of a 6 mm-sized invasive ductal carcinoma (anaplastic carcinoma, spindle cell type) of the pancreas diagnosed by pancreatic juice cytology
Yasuhiro Nakamura, T. Tamura, Y. Koizumi, R. Koyama +3 more
20180 citations Open access
Semantic Scholar
Pancreatic duct lavage fluid can improve ERCP diagnostic accuracy in early pancreatic ductal carcinoma
Tsunao Imamura, R. Koyama, Y. Koizumi, T. Tamura +1 more
20160 citations
Semantic Scholar
Pancreatic cancer with annular pancreas presenting as obstructive jaundice
Yusuke Ito, R. Koyama, T. Tamura, Y. Koizumi +2 more
20160 citations Open access
Semantic Scholar
Endoscopic Retrograde Cholangiopancreatography in Very Elderly Patients: 356
R. Koyama, T. Tamura, Y. Urasaki, Y. Koizumi +1 more
20160 citations
Semantic Scholar
A rare case of sclerosing cholangitis with a dominant stricture of the bile duct at the porta hepatis
Kimio Matsumura, Tsunao Imamura, T. Tamura, Y. Koizumi +3 more
20140 citations Open access
Semantic Scholar
A Case of Fitz-Hugh-Curtis Syndrome Dignosed with Abdominal Enhanced Computed Tomography
A. Sakatani, Tsunao Imamura, T. Tamura, Y. Koizumi +4 more
20130 citations
Semantic Scholar
A case of recurrent cholangitis due to common bile duct stones composed of ursodeoxycholic acid (UDCA)
Shintaro Akiyama, Tsunao Imamura, T. Tamura, Y. Koizumi +3 more
20130 citations Open access
Semantic Scholar
[Case report; a case of biliary pseudolithiasis associated with ceftriaxone].
N. Hanata, Tsunao Imamura, R. Koyama, Y. Koizumi +3 more
2012Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine0 citations Open access
Semantic Scholar
A case of sarcoidosis of the stomach and liver
Y. Wada, Tsunao Imamura, T. Tamura, Y. Koizumi +2 more
20120 citations Open access
Semantic Scholar
What do Honorifics Convey? : A relevance-based approach
Y. Koizumi
20110 citations
Semantic Scholar
A case of follicular lymphoma in the duodenal papilla
A. Nishida, Tsunao Imamura, T. Tamura, Y. Koizumi +5 more
20100 citations Open access
Semantic Scholar
The case of the obstructive jaundice caused by limy bile accompanied with chronic renal failure
T. Tamura, Tsunao Imamura, A. Suzuki, Y. Koizumi +3 more
20090 citations Open access
Semantic Scholar
1074: Ultrasonographic Imaging of Bile Duct Lesions in Autoimmune Pancreatobiliary Disease
R. Koyama, Y. Koizumi, Tsunao Imamura, C. Okuda +1 more
20090 citations Open access
Semantic Scholar
S1312 Ultrasonographic Imaging of Bile Duct Lesions in Autoimmune Pancreatitis
R. Koyama, Y. Koizumi, Tsunao Imamura, C. Okuda +1 more
20080 citations Open access
Semantic Scholar
Emergency ERCP in our hospital
Y. Koizumi, Tsunao Imamura, R. Koyama, C. Okuda +1 more
20080 citations Open access
Semantic Scholar
Characteristic of Ultrasoud Images in Intra-abdomial Desmoid Tumor : Sonographic Feature of 5 Cases
Y. Koizumi, R. Koyama, Rie Takesita, T. Imamura +3 more
20070 citations
Semantic Scholar
Japanese Honorifics and Politeness
Y. Koizumi
2001Institutional Repositories DataBase (IRDB)0 citations Open access
Semantic Scholar
An Interview of Children at a Self-Access Computer Activity
Y. Koizumi, T. Okabe, A. Oshima, Hitoshi Nakagawa +2 more
19960 citations
Semantic Scholar
A Case of Reconstruction of the Chest Wall after Subtotal Resection of the Sternum and Removal of the First Three Ribs Bilaterally
A. Ohishi, T. Saitou, R. Kanno, T. Takeshige +6 more
19900 citations Open access
Semantic Scholar
[Effects of the synthetic proteinase inhibitor, FOY, on hypercoagulability after surgery for esophageal carcinoma].
A. Usuba, R. Motoki, Y. Koizumi, A. Oishi +3 more
1990Nihon Geka Gakkai zasshi0 citations
Semantic Scholar
A CASE OF BILIARY CYSTADENOMA
S. Terashima, N. Yago, Masao Kushida, Masatoshi Watanabe +8 more
19900 citations Open access
Semantic Scholar
S1315 Immunohistochemical Staining of the Pancreas with TGF-β1, MMP-2 and TIMP-2 in Patients with Autoimmune Chronic Pancreatitis and Alcoholic Chronic Pancreatitis
R. Koyama, Y. Koizumi, Tsunao Imamura, C. Okuda +31 more
0 citations
Semantic Scholar

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