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Hepatobiliary Surgery and Nutrition 2023年第2期12卷 287-290页

作者： Kensuke Yamamura Toru Beppu Tatsunori Miyata Hirohisa Okabe katsunori imai Takatoshi Ishiko Department of Surgery Yamaga City Medical CenterYamagaJapan Department of Gastroenterological Surgery Graduate School of Life SciencesKumamoto UniversityKumamotoJapan

Curability and safety are essential for patients with advanced liver malignancy undergoing extended liver *** the future liver remnant(FLR)volume is insufficient,portal embolization with or without hepatic arterial or venous embolization or a conventional two-stage hepatectomy(TSH)can be performed(1,2).Associating liver partition and portal vein ligation for staged hepatectomy(ALPPS)was introduced in 2007.

关键词： Associating liver partition and portal vein ligation for staged hepatectomy(ALPPS) comprehensive ALPPS preoperative risk assessment(CAPRA)score mortality

Liver resection for hepatocellular carcinoma associated with hepatic vein invasion: is it time to reconsider the current treatment guidelines?

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Hepatobiliary Surgery and Nutrition 2018年第4期7卷 300-301页

作者： katsunori imai Hideo Baba Department of Gastroenterological Surgery Graduate School of Life Sciences Kumamoto University Kumamoto Japan

Hepatocellular carcinoma (HCC) is the most common primary liver cancer and is responsible for 70–90% of cases (1,2).The presence of macrovascular invasion such as portal vein tumor thrombus (PVTT) or hepatic vein tum... 详细信息

关键词： invasion hepatic thrombus

Assessment for the minimal invasiveness of laparoscopic liver resection by interleukin-6 and thrombospondin-1

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World Journal of Hepatology 2022年第1期14卷 234-243页

作者： Takayoshi Kaida Hiromitsu Hayashi Hiroki Sato Shotaro Kinoshita Takashi Matsumoto Yuta Shiraishi Yuki Kitano Takaaki Higashi katsunori imai Yo-ichi Yamashita Hideo Baba Gastroenterological Surgery Graduate School of Life SciencesKumamoto UniversityKumamoto 860-8556Japan

BACKGROUND Laparoscopic surgery has been introduced as a minimally invasive technique for the treatment of various ***,there are few reports that have scientifically investigated the minimally invasive nature of laparoscopic liver resection(LLR).AIM To investigate whether LLR is scientifically less invasive than open liver *** During December 2011 to April 2015,blood samples were obtained from 30 patients who treated with laparoscopic(n=10,33%)or open(n=20,67%)partial liver resection for liver *** levels of serum interleukin-6(IL-6)and plasma thrombospondin-1(TSP-1)were measured using ELISA kit at four time points including preoperative,immediate after operation,postoperative day 1(POD1)and ***,we investigated the impact of the operative approaches during partial hepatectomy on the clinical time course including IL-6 and *** Serum level of IL-6 on POD1 in laparoscopic hepatectomy was significantly lower than those in open hepatectomy(8.7 vs 30.3 pg/mL,respectively)(P=0.003).Plasma level of TSP-1 on POD3 in laparoscopic hepatectomy was significantly higher than those in open hepatectomy(1704.0 vs 548.3 ng/mL,respectively)(P=0.009),and have already recovered to preoperative level in laparoscopic *** patients with higher IL-6 Levels on POD1,plasma level of TSP-1 on POD3 was significantly lower than those in patients with lower IL-6 Levels on *** analysis showed that open approach was the only independent factor related to higher level of IL-6 on POD1[odds ratio(OR),7.48;95%confidence interval(CI):1.28-63.3;P=0.02].Furthermore,the higher level of serum IL-6 on POD1 was significantly associated with lower level of plasm TSP-1 on POD3(OR,5.32;95%CI:1.08-32.2;P=0.04)in multivariate *** In partial hepatectomy,laparoscopic approach might be minimally invasive surgery with less IL-6 production compared to open approach.

关键词： Laparoscopic surgery Liver resection Hepatectomy Minimal invasiveness Interleukin-6 Thrombospondin-1

Liver metastases from pancreatic ductal adenocarcinoma:is there a place for surgery in the modern era?

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Journal of Pancreatology 2020年第2期3卷 81-85页

作者： imai katsunori Margonis Georgios A. Wang Jaeyun Wolfgang Christopher L. Baba Hideo Weiss Matthew J. Department of Gastroenterological Surgery Graduate School of Life SciencesKumamoto UniversityKumamotoJapan Department of Surgery Johns Hopkins University School of MedicineBaltimoreMDNYUSA Northwell Health Cancer Institute Lake SuccessNYUSA

Pancreatic ductal adenocarcinoma(PDAC)represents one of the most aggressive malignancies,and the majority of patients with PDAC present with metastatic disease,mainly in the liver,at the time of *** resection is the only treatment that can offer prolonged survival and possible ***,the indications for surgery for patients with PDAC metastases remain extremely limited to highly selected patients with localized disease,and metastatic disease is generally regarded as a contraindication to ***,however,the advent of more effective chemotherapy has changed the treatment strategy for metastatic *** fact,cases in which resection of synchronous or metachronous PDAC liver metastases lead to prolonged survival in highly selected patients have been *** this review,we provide current data regarding survival outcomes after surgery,and discuss the role of surgical resection and selection criteria for patients with PDAC liver metastases in the modern era.

关键词： Liver metastases Pancreatic cancer Surgery

Ectopic hepatocellular carcinoma mimicking a retroperitoneal tumor:A case report

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World Journal of Gastroenterology 2020年第18期26卷 2268-2275页

作者： Yuki Adachi Hiromitsu Hayashi Toshihiko Yusa Toru Takematsu Kazuki Matsumura Takaaki Higashi Kensuke Yamamura Takanobu Yamao katsunori imai Yo-ichi Yamashita Hideo Baba Department of Gastroenterological Surgery Graduate School of Life SciencesKumamoto UniversityKumamoto 8608556Japan

BACKGROUND An ectopic hepatocellular carcinoma(EHCC)arises from the ectopic liver which is defined as a hepatic organ or tissue not connected to surrounding *** is a rare disease and it is difficult to diagnose ***,the clinical features are not fully *** SUMMARY A retroperitoneal tumor(6 cm)was located at the dorsal side of the pancreas head on abdominal ultrasonography in an 81-year old woman positive for hepatitis C virus *** enhanced-computed tomography and gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging showed viable HCC patterns with early enhancement and delayed *** tumor markers-serum alphafetoprotein and alpha-fetoprotein-L3%-were increased to 30.1 ng/m L and83.1%,*** induced by vitamin K absence or antagonist-Ⅱwas within normal levels(17 m AU/m L).Positron emission tomography-computed tomography showed strong accumulation into the tumor(Standardized Uptake Value max:13.8),and the tumor cytology following endoscopic ultrasoundguided fine needle aspiration showed poorly differentiated *** extirpation was performed,and operative findings showed that the retroperitoneal tumor was disconnected from the pancreas and the *** lymph nodes near the tumor were histologically *** histological examination,the tumor was finally diagnosed as EHCC with Arginase-1 positive *** We report our experience of a rare EHCC which was difficult to diagnose,and we present a review of the literature.

关键词： Ectopic hepatocellular carcinoma Differential diagnosis Retroperitoneal tumor Case report

Bi-predual spaces of generalized Campanato spaces with variable growth condition

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Acta Mathematica Sinica,English Series 2024年

作者： Satoshi YAMAGUCHI Eiichi NAKAI katsunori SHIMOMURA Department of Mathematics Ibaraki University

In this paper we extend the duality(■)*= H1(Rd) to generalized Campanato spaces with variable growth condition Lp,φ(Rd) instead of BMO(Rd). We also extend the characterization of Cc∞omp(Rd)BMO(Rd)by Uchiyama(1978) to ■. Moreover, using this characterization, we prove the boundedness of singular and fractional integral operators on ■.The function space Lp,φ(Rd) treated in this paper covers the case that it is coincide with Lipαon one area, with BMO on another area and with the Morrey space on the other area, for example.

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Borderline resectable for colorectal liver metastases:Present status and future perspective

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World Journal of Gastrointestinal Surgery 2021年第8期13卷 756-763页

作者： Yuki Kitano Hiromitsu Hayashi Takashi Matsumoto Shotaro Kinoshita Hiroki Sato Yuta Shiraishi Yosuke Nakao Takayoshi Kaida katsunori imai Yo-ichi Yamashita Hideo Baba Department of Gastroenterological Surgery Graduate School of Medical SciencesKumamoto UniversityKumamoto 860-8556Japan

Surgical resection for colorectal liver metastases(CRLM)may offer the best opportunity to improve ***,only about 20% of CRLM cases are indicated for resection at the time of diagnosis(initially resectable),and the remaining cases are treated as unresectable(initially unresectable).Thanks to recent remarkable developments in chemotherapy,interventional radiology,and surgical techniques,the resectability of CRLM is ***,some metastases are technically resectable but oncologically questionable for upfront *** pancreatic cancer,such cases are categorized as"borderline resectable",and their definition and treatment strategies are ***,in CRLM,although various poor prognosis factors have been identified in previous reports,no clear definition or treatment strategy for borderline resectable has yet been *** the efficacy of hepatectomy for CRLM was reported in the 1970 s,multidisciplinary treatment for unresectable cases has improved resectability and prognosis,and clarifying the definition and treatment strategy of borderline resectable CRLM should yield further improvement in *** review outlines the present status and the future perspective for borderline resectable CRLM,based on previous studies.

关键词： Borderline resectable Colorectal liver metastases Adjuvant chemotherapy Hepatectomy Colorectal cancer

Risk factors for lymph node metastasis in patients with pancreatic neuroendocrine neoplasms

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World Journal of Clinical Oncology 2022年第6期13卷 520-528页

作者： Yosuke Nakao Hiromitsu Hayashi Yo-ichi Yamashita Ofuchi Takashi Kazuki Matsumura Norio Uemura Fumimasa Kitamura Rumi Itoyama Toshihiko Yusa Katsunobu Taki Tatsunori Miyata Takaaki Higashi Shigeki Nakagawa Hirohisa Okabe katsunori imai Hideo Baba Department of Gastroenterological Surgery Kumamoto UniversityKumamoto 860-8556Japan

BACKGROUND Although PNENs generally have a better prognosis than pancreatic cancers,some PNENs display malignant behavior including lymph node(LN)*** tumor resection can be the only potentially curative treatment for patients with resectable ***,the indications for LN dissection are still *** the last decade,minimally invasive surgery such as laparoscopic pancreatic surgery(LPS)has been increasingly performed for pancreatic tumors including *** To investigate the risk factors for LN metastasis in PNENs and to select appropriate patients for limited surgery by *** From April 2001 to December 2019,92 patients underwent pancreatic resection for PNENs at Kumamoto University ***,82 patients were enrolled in this *** perioperative factors,we examined the predictive factors for LN metastasis in *** Among the 82 patients,the percentage of LN metastasis according to the pathological findings was 12%(10/82 cases).The median tumor size was 12 mm(range:5-90 mm).The median tumor size in the LN-positive group(37 mm)was significantly larger than that in the LN-negative group(12 mm)(P=0.0001).Multivariate analyses revealed that larger tumor size(≥20 mm)was an independent risk factor for LN metastasis(odds ratio 16.8,P=0.0062).In patients with small tumors(≤10 mm),LN metastasis was not *** Larger tumor size(≥20 mm)is an independent risk factor for LN metastasis in *** smaller PNENs(≤10 mm),we may be able to choose limited surgery without LN dissection.

关键词： Lymph node metastasis Pancreatic neuroendocrine neoplasms Risk factor Tumor size

The Number of Positive Tumor Marker Status Is Beneficial for the Selection of Therapeutic Modalities in Patients with Hepatocellular Carcinoma

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Journal of Clinical and Translational Hepatology 2017年第2期5卷 165-168页

作者： Toru Beppu Shigeki Nakagawa Hidetoshi Nitta Hirohisa Okabe Takayoshi Kaida katsunori imai Hiromitsu Hayashi Yuki Koga Kunitaka Kuramoto Daisuke Hashimoto Yo-ichi Yamashita Akira Chikamoto Takatoshi Ishiko Hideo Baba Department of Surgery Yamaga City Medical Center Kumamoto Japan Department of Gastroenterological Surgery Graduate School of Life Sciences Kumamoto University Kumamoto Japan Department of Gastroenterological Surgery Graduate School of Life Sciences Kumamoto University Kumamoto Japan

Hepatic resection (HR) and radiofrequency ablation (RFA) are popular local therapies for early-stage hepatocellular carcinoma (HCC).Alpha-fetoprotein,Lens culinaris agglutininreactive fraction of alpha-fetoprotein,and des-c-carboxy prothrombin are well-known and useful tumor markers for *** positive number status of these tumor markers has recently been demonstrated as beneficial for predicting outcome for HCC patients treated with local *** the normal ranges reported have differed by institution,the positivity of tumor markers is consistent and can easily be *** and Wakayama's group clearly demonstrated the following:1) Regardless of the degree of tumor stage,a triple-positive tumor marker profile can predict poor outcome in HCC patients undergoing HR;2) For RFA alone,HCC patients with double-and triple-positive status,having less than three lesions and lesions ≤3 cm in diameter show comparably insufficient outcomes;3) For HCC patients with lesions ≤5 cm in Child-Pugh grade A,HR is preferred over RFA;4) Microvascular invasion rates increased even in the double-positive patients,while poorly differentiated HCC was frequently observed only in the triple-positive patients;and 5) RFA with chemoembolization,anatomical liver resection,and postoperative adjuvant chemoembolization or hepatic arterial chemotherapy might improve the outcome for patients with highly malignant HCC with multiple positive tumor ***,the impacts of these therapies still need to be evaluated in prospective comparative studies.

关键词： Triple-positive tumor markers Double-positive tumor markers Hepatocellular carcinoma Hepatic resection Radiofrequency ablation Alpha-fetoprotein Des-γ-carboxy prothrombin Lens culinaris agglutinin reactive fraction of alpha-fetoprotein

Epithelial-mesenchymal transition in gastroenterological cancer

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Journal of Cancer Metastasis and Treatment 2015年第1期1卷 183-189页

作者： Hirohisa Okabe Kosuke Mima Seiya Saito Hiromitsu Hayashi katsunori imai Hidetoshi Nitta Daisuke Hashimoto Akira Chikamoto Takatoshi Ishiko Toru Beppu Hideo Baba Department of Gastroenterological Surgery Graduate School of Life SciencesKumamoto UniversityKumamoto 860-8556Japan Department of Multidisciplinary Treatment for Gastroenterological Cancer Kumamoto University HospitalKumamoto 860-8556Japan.

Epithelial-mesenchymal transition(EMT)was first reported as an essential process in embryonic cells and later showed that cancer cells,regardless of the context,exhibited a similar phenomenon that was crucial for tumor *** cells lose their adhesive characteristic capacity which is necessary for their functions but gain a mesenchymal *** change from epithelial to the mesenchymal phenotype of cancer cells makes it difficult to understand the mechanism underlying cancer biology and tumor progression.A number of transcription factors involved in tumor cell EMT and microRNA-regulated EMT have been *** review discussed recent findings and new players in EMT in gastrointestinal *** the molecular mechanisms of tumor progression are sometimes context-dependent,the recent findings of EMT have been reviewed in a context-dependent manner.

关键词： Epithelial-mesenchymal transition gastrointestinal cancer microRNA transcription factor