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| 1 | Prospective study of differential diagnosis of hepatic tumors by pattern-based classification of contrast-enhanced sonography显示文摘AIM: To prospectively evaluate the usefulness of a pattern-based classification of contrast-enhanced sonographic findings for differential diagnosis of hepatic tumors. METHODS: We evaluated the enhancement pattern of the contrast-enhanced sonography images in 586 patients with 586 hepatic lesions, consisting of 383 hepatocellular carcinomas, 89 metastases, and 114 hemangiomas. After injecting a galactose-palmitic acid contrast agent, lesions were scanned by contrast- enhanced harmonic gray-scale sonography in three phases: arterial, portal, and late. The enhancement patterns of the initial 303 lesions were classified retrospectively, and multiple logistic regression analysis was used to identify enhancement patterns that allowed differentiation between hepatic tumors. We then used the pattern-based classification of enhancement we had retrospectively devised to prospectively diagnose 283 liver tumors. RESULTS: Seven enhancement patterns were found to be significant predictors of different hepatic tumors. The presence of homogeneous or heterogeneous enhancement both in the arterial and portal phase was the typical enhancement pattern for hepatocellular carcinoma, while the presence of peritumoral vessels in the arterial phase and ring enhancement or a perfusion defect in the portal phase was the typical enhancement pattern for metastases, and the presence of peripheral nodular enhancement both in the arterial and portal phase was the typical enhancement pattern forhemangioma. The sensitivity, specificity, and accuracy of prospective diagnosis based on the combinations of enhancement patterns, respectively, were 93.2%, 96.2%, and 94.0% for hepatocellular carcinoma, 87.9%, 99.6%, and 98.2% for metastasis, and 95.6%, 94.1%, and 94.3% for hemangioma. CONCLUSION: The pattern-based classification of the contrast-enhanced sonographic findings is useful for differentiating among hepatic tumors. | Kazushi Numata Tetsuo Isozaki Manabu Morimoto Kazuya Sugimori Reiko Kunisaki Toshio Morizane Katsuaki Tanaka | 2006 | World Journal of Gastroenterology2006，12，39： | 18 |
| 2 | Contrast enhanced ultrasound of hepatocellular carcinoma显示文摘Sonazoid(Daiichi Sankyo,Tokyo,Japan),a secondgeneration of a lipid-stabilized suspension of a perfluorobutane gas microbubble contrast agent,has been used clinically in patients with liver tumors and for harmonic gray-scale ultrasonography(US)in Japan since January 2007.Sonazoid-enhanced US has two phases of contrast enhancement:vascular and late.In the late phase of Sonazoid-enhanced US,we scanned the whole liver using this modality at a low mechanical index(MI)without destroying the microbubbles, and this method allows detection of small viable hepatocellular carcinoma(HCC)lesions which cannot be detected by conventional US as perfusion defects in the late phase.Re-injection of Sonazoid into an HCC lesion which previously showed a perfusion defect in the late phase is useful for confirming blood flow intothe defects.High MI intermittent imaging at 2 frames per second in the late phase is also helpful in differentiation between necrosis and viable hypervascular HCC lesions.Sonazoid-enhanced US by the coded harmonic angio mode at a high MI not only allows clear observation of tumor vessels and tumor enhancement, but also permits automatic scanning with Sonazoidenhanced three dimensional(3D)US.Fusion images combining US with contrast-enhanced CT or contrastenhanced MRI have made it easy to detect typical or atypical HCC lesions.By these methods,Sonazoidenhanced US can characterize liver tumors,grade HCC lesions histologically,recognize HCC dedifferentiation, evaluate the efficacy of ablation therapy or transcatheter arterial embolization,and guide ablation therapy for unresectable HCC.This article reviews the current developments and applications of Sonazoid-enhanced US and Sonazoid-enhanced 3D US for diagnosing and treating hepatic lesions,especially HCC. | Kazushi Numata Manabu Morimoto Masaaki Kondo Yosuke Kunishi Tomohiko Sasaki Akito Nozaki Katsuaki Tanaka | 2010 | World Journal of Radiology2010，2，2： | 15 |
| 3 | Can the biliary enhancement of Gd-EOB-DTPA predict the degree of liver function?显示文摘BACKGROUND: Excretion of gadolinium-ethoxybenzyl-diethyl- enetriamine pentaacetic acid (Gd-EOB-DTPA) in the bile may be related to liver function, because of elimination from the liver after preferential uptake by hepatocytes. The purpose of this study was to investigate the relation between liver and biliary enhancement in patients with or without liver dysfunction, and to compare the tumor-to-liver contrast in these patients. METHODS: Forty patients [group 1: normal liver and Child Pugh class A in 20 patients, group 2: Child-Pugh class B in 18 patients and Child-Pugh C in 2] were evaluated. All patients underwent MR imaging of the liver using a 1.5-Tesla system. T1 weighted 3D images were obtained at 5, 10, 15 and 20 minutes after Gd-EOB-DTPA injection. The relation between group 3 (total bilirubin <1.8 mg/dL) and group 4 (total bilirubin ≥1.8 mg/dL) was investigated at 20 minutes. Liver and biliary signals were measured, and compared between groups 1 and 2 or groups 3 and 4. Tumor-to-liver ratio was also evaluated between groups 1 and 2. Scheffé's post-hoc test after two-way repeated measures ANOVA and Pearson's correlation test were used for statistical analysis. RESULTS: Liver enhancement showed significant difference at all time points between groups 1 and 2. Biliary enhancement did not show a significant difference between groups 1 and 2 at 5 minutes, but did at 10, 15 and 20 minutes. At 20 minutes significant differences between groups 3 and 4 were seen for liver and biliary enhancement. At all time points, liver enhancement correlated with biliary enhancement in both groups. At 5 minutes and 20 minutes, statistical differences between groups 1 and 2 were seen for tumor-to-liver ratio.CONCLUSIONS: The degree of biliary enhancement has a close correlation to that of liver enhancement. It is especially important that insufficient liver enhancement causes lower tumor-to-liver contrast in the hepatobiliary phase of Gd-EOB- DTPA. | Masahiro Okada Kazunari Ishii Kazushi Numata Tomoko Hyodo Seishi Kumano Masayuki Kitano Masatoshi Kudo Takamichi Murakami | 2012 | Hepatobiliary & Pancreatic Diseases International2012，11，3： | 13 |
| 4 | Differentiation of focal liver lesions using three-dimensional ultrasonography: Retrospective and prospective studies显示文摘AIM: To differentiate focal liver lesions based on enhancement patterns using three-dimensional ultrasonography (3D US) with perflubutane-based contrast agent.METHODS: Two hundred and eighty two patients with focal liver lesions,including 168 hepatocellular carcinomas (HCCs),63 metastases,40 hemangiomas and 11 focal nodular hyperplasias (FNHs),were examined by 3D US with perflubutane-based contrast agent.Tomographic ultrasound images and sonographic angiograms were reconstructed.Among 282 lesions,enhancement patterns of 163 lesions between January 2007 and October 2007 were analyzed retrospectively.Then from November 2007 to May 2008,compared with contrast-enhanced (CE) 2D US,CE 3D US was performed on 119 lesions for prospective differential diagnosis.Sensitivity,specificity,area under receiver operating characteristic curve (Az) and inter-reader agreement were assessed.RESULTS: With the tridimensional view,dominant enhancement patterns were revealed as diffuse enhancement or peripheral ring-like enhancement,followed with washout change for HCCs or metastases,respectively,and peripheral nodular enhancement or diffuse enhancement with spoke-wheel arteries,followed by persistent enhancement for hemangiomas or FNHs,respectively.At CE 3D US,the prospective differentiation of lesions showed sensitivity 92% (mean for two readers),specificity 91% and Az value 0.95 for HCCs,84%,97%,and 0.95 for metastases,91%,98%,and 0.98 for hemangiomas and 80%,99%,and 0.99 for FNHs,respectively,while good to excellent inter-reader agreement was achieved.No significant difference exists between prospective diagnosis accuracy at CE 3D US and that at CE 2D US.CONCLUSION: CE 3D US provides a spatial perspective for liver tumor enhancement,and could help in differentiating focal liver lesions. | Kazushi Numata Manabu Morimoto Akito Nozaki Michio Ueda Masaaki Kondo Satoshi Morita Katsuaki Tanaka | 2010 | World Journal of Gastroenterology2010，16，17： | 12 |
| 5 | Successful initial ablation therapy contributes to survival in patients with hepatocellular carcinoma显示文摘AIM: To evaluate the outcome predictors of percu- taneous ablation therapy in patients with unresectable hepatocellular carcinoma (HCC), especially to identify whether the initial treatment response contributes to the survival of the patients. METHODS: The study cohort included 153 patients with single (102) and two or three (51) HCC nodules 5 cm or less in maximum diameter. As an initial treatment, 110 patients received radiofrequency ablation and 43 patients received percutaneous ethanol injection. RESULTS: The Kaplan-Meier estimates of overall 3- and 5-year survival rates were 75% and 59%, respectively. The log-rank test revealed statistically significant differences in the overall survivals according to Child- Pugh class (P = 0.0275), tumor size (P = 0.0130), serum albumin level (P = 0.0060), serum protein induced by vitamin K absence or antagonist Ⅱ level (P = 0.0486), and initial treatment response (P = 0.0130). The independent predictors of survival were serum albumin level (risk ratio, 3.216; 95% CI, 1.407-7.353; P = 0.0056) and initial treatment response (risk ratio, 2.474; 95% CI, 1.076-5.692; P = 0.0330) based on the Cox proportional hazards regression models. The patients had a serum albumin level 3.5 g/dL and the 3- and 5-year survival rates of 86% and 82%. CONCLUSION: In HCC patients treated with percutaneous ablation therapy, serum albumin level and initial treatment response are the independent outcome predictors. | Manabu Morimoto Kazushi Numata Kazuya Sugimori Kazuhito Shirato Atsushi Kokawa Hiroyuki Oka Kingo Hirasawa Ryonho Koh Hiromi Nihommatsu Katsuaki Tanaka | 2007 | World Journal of Gastroenterology2007，13，7： | 8 |
| 6 | Significance of regenerating islet-derived type Ⅳ gene expression in gastroenterological cancers显示文摘The regenerating islet-derived members (Reg ),a group of small secretory proteins,which are involved in cell proliferation or differentiation in digestive organs,are upregulated in several gastrointestinal cancers,functioning as trophic or antiapoptotic factors.Regenerating islet-derived type Ⅳ (RegⅣ ),a member of the Reg gene family,has been reported to be overexpressed in gastroenterological cancers.RegIV overexpression in tumor cells has been associated with carcinogenesis,cell growth,survival and resistance to apoptosis.Cancer tissue expressing RegⅣ is generally associated with more malignant characteristics than that without such expression,and RegⅣ is considered a novel prognostic factor as well as diagnostic marker in some gastroenterological cancers.We previously investigated the expression levels of RegⅣ mRNA of 202 surgical colorectal cancer specimens with quantitative real-time reverse-transcriptase polymerase chain reaction and reported that a higher level of RegⅣ gene expression was a significant independent predictor of colorectal cancer.The biologic functions of RegⅣ protein in cancer tissue,associated with carcinogenesis,antiapoptosis and invasiveness,are being elucidated by molecular investigations using transfection techniques or neutralizing antibodies of RegⅣ,and the feasibility of antibody therapy targeting RegⅣ is being assessed.These studies may lead to novel therapeutic strategies for gastroenterological cancers expressing RegⅣ .This review article summarizes the current information related to biological functions as well as clinical importance of RegⅣ gene to clarify the significance of RegⅣ expression in gastroenterological cancers. | Masakatsu Numata Takashi Oshima | 2012 | World Journal of Gastroenterology2012，18，27： | 6 |
| 7 | Shikonin Promotes Skin Cell Proliferation and Inhibits Nuclear Factor-κB Translocation via Proteasome Inhibition In Vitro显示文摘 | Yan Yan Minao Furumura Takako Gouya Atsufumi Iwanaga Kwesi Teye Sanae Numata Tadashi Karashima Xiao-Guang Li Takashi Hashimoto | 2015 | Chinese Medical Journal2015，，16： | 6 |
| 8 | Comparison of unenhanced magnetic resonance imaging and ultrasound in detecting very small hepatocellular carcinoma显示文摘BACKGROUND In hepatocellular carcinoma(HCC),detection and treatment prior to growth beyond 2 cm are important as a larger tumor size is more frequently associated with microvascular invasion and/or satellites.In the surveillance of very small HCC nodules(≤2 cm in maximum diameter,Barcelona clinical stage 0),we demonstrated that the tumor markers alpha-fetoprotein and PIVKA-Ⅱare not so useful.Therefore,we must survey with imaging modalities.The superiority of magnetic resonance imaging(MRI)over ultrasound(US)to detect HCC was confirmed in many studies.Although enhanced MRI is now performed to accurately diagnose HCC,in conventional clinical practice for HCC surveillance in liver diseases,unenhanced MRI is widely performed throughout the world.While,MRI has made marked improvements in recent years.AIM To make a comparison of unenhanced MRI and US in detecting very small HCC that was examined in the last ten years in patients in whom MRI and US examinations were performed nearly simultaneously.METHODS In 394 patients with very small HCC nodules,those who underwent MRI and US at nearly the same time(on the same day whenever possible or at least within 14 days of one another)at the first diagnosis of HCC were selected.The detection rate of HCC with unenhanced MRI was investigated and compared with that of unenhanced US.RESULTS The sensitivity of unenhanced MRI for detecting very small HCC was 95.1%(97/102,95%confidence interval:90.9-99.3)and that of unenhanced US was 69.6%(71/102,95%confidence interval:60.7-78.5).The sensitivity of unenhanced MRI for detecting very small HCC was significantly higher than that of unenhanced US(P<0.001).Regarding the location of HCC in the liver in patients in whom detection by US was unsuccessful,S7-8 was identified in 51.7%.CONCLUSION Currently,unenhanced MRI is a very useful tool for the surveillance of very small HCC in conventional clinical follow-up practice. | Kazuo Tarao Akito Nozaki Hirokazu Komatsu Tatsuji Komatsu Masataka Taguri Katsuaki Tanaka Testuo Yoshida Hideki Koyasu Makoto Chuma Kazushi Numata Shin Maeda | 2021 | World Journal of Hepatology2021，13，6： | 3 |
| 9 | Global histone modification of H3K27 correlates with the outcomes in patients with metachronous liver metastasis of colorectal cancer显示文摘 | H. Tamagawa T. Oshima M. Numata N. Yamamoto M. Shiozawa S. Morinaga Y. Nakamura M. Yoshihara Y. Sakuma Y. Kameda M. Akaike N. Yukawa Y. Rino M. Masuda Y. Miyagi | 2013 | European Journal of Surgical Oncology2013，，6： | 2 |
| 10 | Real impact of tumor marker AFP and PIVKA-II in detecting very small hepatocellular carcinoma(≤2 cm,Barcelona stage 0)-assessment with large number of cases显示文摘BACKGROUND In hepatocellular carcinoma(HCC),detection and treatment prior to growth beyond 2 cm are relevant as a larger tumor size is more frequently associated with microvascular invasion and/or satellites.AIM To examine the impact of the tumor marker alpha-fetoprotein(AFP)or PIVKA-II in detecting very small HCC nodules(≤2 cm in maximum diameter,Barcelona stage 0)in the large number of very small HCC.The difference in the behavior of these tumor markers in HCC development was also examined.METHODS A total of 933 patients with single-nodule HCC were examined.They were subdivided into 394 patients with HCC nodules≤2 cm in maximum diameter and 539 patients whose nodules were>2 cm.The rates of patients whose AFP and PIVKA-II showed normal values were examined.RESULTS The positive ratio of the marker PIVKA-II was significantly different(P<0.0001)between patients with nodules≤2 cm in diameter and those with nodules>2 cm,but there was no significant difference in AFP(P=0.4254).In the patients whose tumor was≤2 cm,50.5%showed normal levels in AFP and 68.8%showed normal levels in PIVKA-II.In 36.4%of those patients,both AFP and PIVKA-II showed normal levels.The PIVKA-II-positive ratio was markedly increased with an increase in the tumor size.In contrast,the positivity in AFP was increased gradually and slowly.CONCLUSION In the surveillance of very small HCC nodules(≤2 cm in diameter,Barcelona clinical stage 0)the tumor markers AFP and PIVKA-II are not so useful. | Kazuo Tarao Akito Nozaki Hirokazu Komatsu Tatsuji Komatsu Masataka Taguri Katsuaki Tanaka Makoto Chuma Kazushi Numata Shin Maeda | 2020 | World Journal of Hepatology2020，12，11： | 2 |
| 11 | Characteristics of Metachronous Gastric Tumors after Endoscopic Submucosal Dissection for Gastric Intraepithelial Neoplasms显示文摘 | Tomoyuki Boda Masanori Ito Shiro Oka Yoko Kitamura Norifumi Numata Yoji Sanomura Taiji Matsuo Shinji Tanaka Masaharu Yoshihara Koji Arihiro Kazuaki Chayama Sergio Morini | 2014 | Gastroenterology Research and Practice2014，，： | 2 |
| 12 | Historical trends of degradation,loss,and recovery in the tropical forest reserves of Ghana显示文摘The Upper Guinean Forest region of West Africa,a globally significant biodiversity hotspot,is among the driest and most human-impacted tropical ecosystems.We used Landsat to study forest degradation,loss,and recovery in the forest reserves of Ghana from 2003 to 2019.Annual canopy cover maps were generated using random forests and results were temporally segmented using the LandTrendr algorithm.Canopy cover was predicted with a predicted-observed r2 of 0.76,mean absolute error of 12.8%,and mean error of 1.3%.Forest degradation,loss,and recovery were identified as transitions between closed(>60%cover),open(15–60%cover)and low tree cover(<15%cover)classes.Change was relatively slow from 2003 to 2015,but there was more disturbance than recovery resulting in a gradual decline in closed canopy forests.In 2016,widespread fires associated with El Niño drought caused forest loss and degradation across more than 12%of the moist semi-deciduous and upland evergreen forest types.The workflow was implemented in Google Earth Engine,allowing stakeholders to visualize the results and download summaries.Information about historical disturbances will help to prioritize locations for future studies and target forest protection and restoration activities aimed at increasing resilience. | Michael C.Wimberly Francis K.Dwomoh Izaya Numata Foster Mensah Jacob Amoako Dawn M.Nekorchuk Andrea McMahon | 2022 | International Journal of Digital Earth2022，15，1： | 2 |
| 13 | Expression of basic fibroblast growth factor and its receptor in human pancreatic carcinomas显示文摘 | Ohta T Yamamoto M Numata M | 1995 | B J Cancer1995，72，4： | 2 |
| 14 | Contrast-enhanced sonography of pancreatic carcinoma: correlations with pathological findings显示文摘 | Kazushi Numata Yutaka Ozawa Noritoshi Kobayashi Toru Kubota Hiroshi Shimada Akinori Nozawa Yukio Nakatani Kazuya Sugimori Kenichi Matsuo Toshio Imada Katsuaki Tanaka | 2005 | Journal of Gastroenterology2005，，6： | 2 |
| 15 | Antithrombotic drugs are risk factors for delayed postoperative bleeding after endoscopic submucosal dissection for gastric neoplasms显示文摘 | Ryonho Koh Kingo Hirasawa Sei Yahara Hiroyuki Oka Kazuya Sugimori Manabu Morimoto Kazushi Numata Atsushi Kokawa Takeshi Sasaki Akinori Nozawa Masataka Taguri Satoshi Morita Shin Maeda Katsuaki Tanaka | 2013 | Gastrointestinal Endoscopy2013，，： | 2 |
| 16 | Expression of circadian genes correlates with liver metastasis and outcomesin colorectal cancer显示文摘 | Takashi Oshima Seiich Takenoshita Makoto Akaike Chikara Kunisaki Shoich Fujii Akito Nozaki Kazushi Numata Manabu Shiozawa Yasushi Rino Katsuaki Tanaka Munetaka Masuda Toshio Imada | 2011 | Oncology Reports2011，，5： | 2 |
| 17 | Gymnasterones,novel cytotoxic metabolites produced by a fungal strain from a sponge显示文摘 | Amagata T Minoura K Numata A | 1998 | Tetrahedron Lett1998，39，22： | 1 |
| 18 | Identification of a mitochrondrial Na/H exchanger显示文摘 | Petrecca K Lake N | 1998 | J Biol Chem1998，273，12： | 1 |
| 19 | Hepatocellular carcinoma;treatment with percutaneous ethanol injection and transcatheter arterial embolization显示文摘 | Tanaka K Nakamura S Numata K | 1992 | Radiology1992，185，3： | 1 |
| 20 | Reorganization of microtubules in theamitotically dividing macronucleus of tetrahymena 显示文摘 | Fujiu K Numata 0 | 2000 | CellMotil Cytoskeleton2000，46，1： | 1 |
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