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28 results on '"Ikegawa, Takuya"'

1. Pancreatic injury in patients treated with immune checkpoint inhibitors: a retrospective multicenterstudy

Author

Nagao, Kae, Sakai, Arata, Tsumura, Hidetaka, Iemoto, Takao, Hirata, Yuichi, Hori, Hitomi, Ogisu, Kyohei, Kakuyama, Saori, Ikegawa, Takuya, Hirata, Tamaki, Ezaki, Takeshi, Furumatsu, Keisuke, Yamanaka, Kodai, Kato, Takao, Fujigaki, Seiji, Tanaka, Hidenori, Yagi, Yosuke, Tanaka, Takeshi, Kobayashi, Takashi, Masuda, Atsuhiro, Shiomi, Hideyuki, and Kodama, Yuzo

Published
2024
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2. Relapse and side effects of steroid therapy beyond 3 years in autoimmune pancreatitis: A multicenter retrospective study

Author

Tsujimae, Masahiro, Masuda, Atsuhiro, Takagi, Megumi, Kato, Takao, Nakano, Ryota, Fujita, Koichi, Hirata, Yuichi, Kakuyama, Saori, Furumatsu, Keisuke, Nakagawa, Takashi, Ogisu, Kyohei, Fujigaki, Seiji, Iemoto, Takao, Ezaki, Takeshi, Yagi, Yosuke, Ikegawa, Takuya, Yamanaka, Kodai, Sato, Yu, Juri, Noriko, Kobayashi, Takashi, Sakai, Arata, Shiomi, Hideyuki, Sanuki, Tsuyoshi, Arisaka, Yoshifumi, Okabe, Yoshihiro, and Kodama, Yuzo

Published
2024
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3. Integrated analysis of tertiary lymphoid structures in relation to tumor-infiltrating lymphocytes and patient survival in pancreatic ductal adenocarcinoma

Author

Tanaka, Takeshi, Masuda, Atsuhiro, Inoue, Jun, Hamada, Tsuyoshi, Ikegawa, Takuya, Toyama, Hirochika, Sofue, Keitaro, Shiomi, Hideyuki, Sakai, Arata, Kobayashi, Takashi, Tanaka, Shunta, Nakano, Ryota, Yamada, Yasutaka, Ashina, Shigeto, Tsujimae, Masahiro, Yamakawa, Kohei, Abe, Shohei, Gonda, Masanori, Masuda, Shigeto, Inomata, Noriko, Uemura, Hisahiro, Kohashi, Shinya, Nagao, Kae, Kanzawa, Maki, Itoh, Tomoo, Ueda, Yoshihide, Fukumoto, Takumi, and Kodama, Yuzo

Published
2023
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4. Comprehensive Analysis of Molecular Biologic Characteristics of Pancreatic Ductal Adenocarcinoma Concomitant with Intraductal Papillary Mucinous Neoplasm

Author

Tsujimae, Masahiro, Masuda, Atsuhiro, Ikegawa, Takuya, Tanaka, Takeshi, Inoue, Jun, Toyama, Hirochika, Sofue, Keitaro, Uemura, Hisahiro, Kohashi, Shinya, Inomata, Noriko, Nagao, Kae, Masuda, Shigeto, Abe, Shohei, Gonda, Masanori, Yamakawa, Kohei, Ashina, Shigeto, Yamada, Yasutaka, Tanaka, Shunta, Nakano, Ryota, Sakai, Arata, Kobayashi, Takashi, Shiomi, Hideyuki, Kanzawa, Maki, Itoh, Tomoo, Fukumoto, Takumi, Ueda, Yoshihide, and Kodama, Yuzo

Published
2022
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5. Randomised controlled, patient-blinded, multicentre, superiority trial to evaluate the efficacy of the line-attached sheath-type traction device for endoscopic submucosal dissection in patients with superficial gastric neoplasms

Author

Abe, Hirofumi, primary, Sako, Tomoya, additional, Yamamoto, Yoshinobu, additional, Ikeda, Atsushi, additional, Kawara, Fumiaki, additional, Ose, Takayuki, additional, Takao, Toshitatsu, additional, Kitamura, Yasuaki, additional, Ariyoshi, Ryusuke, additional, Morita, Yoshinori, additional, Ishida, Tsukasa, additional, Ikegawa, Takuya, additional, Ishida, Ryosuke, additional, Yoshizaki, Tetsuya, additional, Sakaguchi, Hiroya, additional, Toyonaga, Takashi, additional, and Kodama, Yuzo, additional

Published
2024
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6. ASO Visual Abstract: Comprehensive Analysis of Molecular Biological Characteristics of Pancreatic Ductal Adenocarcinoma Concomitant with Intraductal Papillary Mucinous Neoplasm

Author

Tsujimae, Masahiro, Masuda, Atsuhiro, Ikegawa, Takuya, Tanaka, Takeshi, Inoue, Jun, Toyama, Hirochika, Sofue, Keitaro, Uemura, Hisahiro, Kohashi, Shinya, Inomata, Noriko, Nagao, Kae, Masuda, Shigeto, Abe, Shohei, Gonda, Masanori, Yamakawa, Kohei, Ashina, Shigeto, Yamada, Yasutaka, Tanaka, Shunta, Nakano, Ryota, Sakai, Arata, Kobayashi, Takashi, Shiomi, Hideyuki, Kanzawa, Maki, Itoh, Tomoo, Fukumoto, Takumi, Ueda, Yoshihide, and Kodama, Yuzo

Published
2022
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7. A case of high-grade pancreatic intraepithelial neoplasia diagnosed based on focal pancreatic parenchymal atrophy after acute pancreatitis

Author

Inomata, Noriko, Kobayashi, Takashi, Masuda, Atsuhiro, Masuda, Shigeto, Ashina, Shigeto, Gonda, Masanori, Abe, Shohei, Yamakawa, Kohei, Tsujimae, Masahiro, Tanaka, Takeshi, Yamada, Yasutaka, Tanaka, Shunta, Kakihara, Maya, Nakano, Ryota, Ikegawa, Takuya, Sakai, Arata, Shiomi, Hideyuki, Kannzawa, Maki, Toyama, Hirochika, Itoh, Tomoo, Fukumoto, Takumi, and Kodama, Yuzo

Published
2020
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8. Evaluation of efficacy of pancreatic juice cytology for risk classification according to international consensus guidelines in patients with intraductal papillary mucinous neoplasm; a retrospective study

Author

Yamakawa, Kohei, Masuda, Atsuhiro, Nakagawa, Takashi, Shiomi, Hideyuki, Toyama, Hirochika, Takenaka, Mamoru, Sakai, Arata, Kobayashi, Takashi, Tsujimae, Masahiro, Ashina, Shigeto, Yamada, Yasutaka, Tanaka, Takeshi, Tanaka, Shunta, Nakano, Ryota, Sato, Yu, Ikegawa, Takuya, Kurosawa, Manabu, Fujigaki, Seiji, Kutsumi, Hiromu, Itoh, Tomoo, Fukumoto, Takumi, and Kodama, Yuzo

Published
2019
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9. Temporal progression of pancreatic cancer computed tomography findings until diagnosis: A large‐scale multicenter study

Author

Gonda, Masanori, Masuda, Atsuhiro, Kobayashi, Takashi, Iemoto, Takao, Kakuyama, Saori, Ezaki, Takeshi, Ikegawa, Takuya, Hirata, Yuichi, Tsumura, Hidetaka, Ogisu, Kyohei, Nakano, Ryota, Fujigaki, Seiji, Nakagawa, Takashi, Takagi, Megumi, Yamanaka, Kodai, Sato, Yu, Fujita, Koichi, Furumatsu, Keisuke, Kato, Takao, Sakai, Arata, Shiomi, Hideyuki, Sanuki, Tsuyoshi, Arisaka, Yoshifumi, Okabe, Yoshihiro, Toyama, Hirochika, Sofue, Keitaro, and Kodama, Yuzo

Abstract

Focal parenchymal atrophy and main pancreatic duct (MPD) dilatation have been identified as early signs of pancreatic ductal adenocarcinoma. However, limited evidence exists regarding their temporal progression due to previous study limitations with restricted case numbers. To ascertain a more precise frequency assessment of suspicious pancreatic ductal adenocarcinoma findings as well as delineate the temporal progression of them. A multicenter retrospective study was conducted on patients diagnosed with pancreatic ductal adenocarcinoma between 2015 and 2021. We included patients who had undergone at least one computed tomography (CT) scan ≥6 months before diagnosing pancreatic ductal adenocarcinoma. The temporal progression of suspicious pancreatic ductal adenocarcinoma findings on CT was investigated. Out of 1832 patients diagnosed with pancreatic ductal adenocarcinoma, 320 had a previous CT before their diagnosis. Suspicious pancreatic ductal adenocarcinoma findings were detected in 153 cases (47.8%), with focal parenchymal atrophy (26.6%) being the most common followed by MPD dilatation (11.3%). Focal parenchymal atrophy was the earliest detectable sign among all suspicious findings and became visible on average 2.7 years before diagnosis, and the next most common, MPD dilatation, 1.1 years before diagnosis. Other findings, such as retention cysts, were less frequent and appeared around 1 year before diagnosis. Focal parenchymal atrophy followed by MPD dilatation was observed in 10 patients but not in reverse order. Focal parenchymal atrophy was more frequently detected in the pancreatic body/tail. No significant relationship was found between the pathological pancreatic ductal adenocarcinoma differentiation or tumor stage and the time course of the CT findings. All cases of focal parenchymal atrophy progressed just prior to diagnosis, and the atrophic area was occupied by tumor at diagnosis. Main pancreatic duct dilatation continued to progress until diagnosis. This large‐scale study revealed that the temporal progression of focal parenchymal atrophy is the earliest detectable sign indicating pancreatic ductal adenocarcinoma. These results provide crucial insights for early pancreatic ductal adenocarcinoma detection.

Published
2024
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11. Pancreatic inflammation and atrophy are not associated with pancreatic cancer concomitant with intraductal papillary mucinous neoplasm

Author

Yagi, Yosuke, Masuda, Atsuhiro, Zen, Yoh, Shiomi, Hideyuki, Toyama, Hirochika, Sofue, Keitaro, Takenaka, Mamoru, Kobayashi, Takashi, Nakagawa, Takashi, Yamanaka, Kodai, Ikegawa, Takuya, Hoshi, Namiko, Yoshida, Masaru, Arisaka, Yoshifumi, Okabe, Yoshihiro, Kutsumi, Hiromu, Fukumoto, Takumi, Ku, Yonson, and Azuma, Takeshi

Published
2018
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14. Prospective multicenter evaluation of moving cell metallic stents in endoscopic multiple stent deployment for hepatic hilar obstruction.

Author

Kawai, Junichi, Ogura, Takeshi, Takenaka, Mamoru, Shiomi, Hideyuki, Ueshima, Kazuya, Ueno, Saori, Okuda, Atsushi, Matsuno, Jun, Minaga, Kousuke, Omoto, Shunsuke, Nakai, Atsushi, Ikegawa, Takuya, Hakoda, Akitoshi, and Higuchi, Kazuhide

Abstract

Background and Aim: Bilateral stent deployment for malignant biliary obstruction (MHBO) can be achieved using side‐by‐side (SBS) or stent‐in‐stent (SIS) procedures. Compared with SBS techniques, the procedural steps of SIS are technically complex due to the necessity of introducing the delivery system into a contralateral biliary tract through the mesh of the SEMS. To overcome this issue, a novel uncovered SEMS, the HILZO Moving Cell Stent (MCS) has been released. The present study examined the technical feasibility of treating MHBO using bilateral deployment of this novel stent without dilating the mesh of the first stent to achieve insertion of the second stent within a single session, using a prospective, multicenter setting. Method: The primary outcome in the present study was the technical success rate. Technical success was defined as deployment of bilateral MCSs into two or more biliary tracts using SIS without a dilation device in a single‐session. Results: A total of 27 patients with complications of MHBO were enrolled in this study. Bilateral SIS using two MCS was successfully performed in 23 patients without using dilation devices among 27 patients (initial technical success rate; 85.2%). Median time to recurrent biliary obstruction (TRBO) was 271 days. Stent dysfunction was observed in 12 patients (44.4%), and re‐intervention was successfully performed in all patients without one patient who instead received best supportive care. Conclusions: The SIS technique using MCS without dilation of the mesh may be technically feasible and safe. In addition, this may be useful for re‐intervention. Further comparative randomized trials are needed. [ABSTRACT FROM AUTHOR]

Published
2022
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15. Prospective multicenter evaluation of moving cell metallic stents in endoscopic multiple stent deployment for hepatic hilar obstruction

Author

Kawai, Junichi, primary, Ogura, Takeshi, additional, Takenaka, Mamoru, additional, Shiomi, Hideyuki, additional, Ueshima, Kazuya, additional, Ueno, Saori, additional, Okuda, Atsushi, additional, Matsuno, Jun, additional, Minaga, Kousuke, additional, Omoto, Shunsuke, additional, Nakai, Atsushi, additional, Ikegawa, Takuya, additional, Hakoda, Akitoshi, additional, and Higuchi, Kazuhide, additional

Published
2021
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17. A Case in which an Intraductal Papillary Neoplasm of the Bile Duct Was Surgically Resected 12 Years after the Initial Diagnosis

Author

Tsujimae, Masahiro, primary, Sakai, Arata, additional, Masuda, Atsuhiro, additional, Inomata, Noriko, additional, Masuda, Shigeto, additional, Gonda, Masanori, additional, Abe, Shohei, additional, Yamakawa, Kohei, additional, Ashina, Shigeto, additional, Kakihara, Maya, additional, Yamada, Yasutaka, additional, Tanaka, Takeshi, additional, Tanaka, Shunta, additional, Nakano, Ryota, additional, Ikegawa, Takuya, additional, Kobayashi, Takashi, additional, Shiomi, Hideyuki, additional, Ajiki, Tetsuo, additional, Fukumoto, Takumi, additional, Ito, Tomoo, additional, and Kodama, Yuzo, additional

Published
2020
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21. Prediction of pancreatic atrophy after steroid therapy using equilibrium‐phase contrast computed tomography imaging in autoimmune pancreatitis

Author

Yamada, Yasutaka, primary, Masuda, Atsuhiro, additional, Sofue, Keitaro, additional, Ueshima, Eisuke, additional, Shiomi, Hideyuki, additional, Sakai, Arata, additional, Kobayashi, Takashi, additional, Ikegawa, Takuya, additional, Tanaka, Shunta, additional, Nakano, Ryota, additional, Tanaka, Takeshi, additional, Kakihara, Maya, additional, Ashina, Shigeto, additional, Tsujimae, Masahiro, additional, Yamakawa, Kohei, additional, Abe, Shohei, additional, Gonda, Masanori, additional, Masuda, Shigeto, additional, Inomata, Noriko, additional, Kutsumi, Hiromu, additional, Itoh, Tomoo, additional, Murakami, Takamichi, additional, and Kodama, Yuzo, additional

Published
2020
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22. Significance of pancreatic calcification on preoperative computed tomography of intraductal papillary mucinous neoplasms

Author

Tsujimae, Masahiro, primary, Masuda, Atsuhiro, additional, Shiomi, Hideyuki, additional, Toyama, Hirochika, additional, Sofue, Keitaro, additional, Ueshima, Eisuke, additional, Yamakawa, Kohei, additional, Ashina, Shigeto, additional, Yamada, Yasutaka, additional, Tanaka, Takeshi, additional, Tanaka, Shunta, additional, Nakano, Ryota, additional, Sato, Yu, additional, Ikegawa, Takuya, additional, Kurosawa, Manabu, additional, Fujigaki, Seiji, additional, Kobayashi, Takashi, additional, Sakai, Arata, additional, Kutsumi, Hiromu, additional, Zen, Yoh, additional, Itoh, Tomoo, additional, Fukumoto, Takumi, additional, and Kodama, Yuzo, additional

Published
2019
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24. Clinical outcomes of ampullary neoplasms in resected margin positive or uncertain cases after endoscopic papillectomy

Author

Sakai, Arata, primary, Tsujimae, Masahiro, additional, Masuda, Atsuhiro, additional, Iemoto, Takao, additional, Ashina, Shigeto, additional, Yamakawa, Kohei, additional, Tanaka, Takeshi, additional, Tanaka, Shunta, additional, Yamada, Yasutaka, additional, Nakano, Ryota, additional, Sato, Yu, additional, Kurosawa, Manabu, additional, Ikegawa, Takuya, additional, Fujigaki, Seiji, additional, Kobayashi, Takashi, additional, Shiomi, Hideyuki, additional, Arisaka, Yoshifumi, additional, Itoh, Tomoo, additional, and Kodama, Yuzo, additional

Published
2019
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25. Flexural and Shear Failure Tests of Reinforced Concrete Beams with Low Grade Recycled Aggregate

Author

Ikegawa, Takuya, Saito, Hisashi, Ohuchi, hajime, Kitoh, Hiroaki, and Tsunokake, Hisao

Subjects
Low Grade Recycled Aggregate, Dry Shrinkage, Flexural Strength, Shear Strength
Abstract

Under ecological and natural resource shortage aspects, structural behavior of the reinforced concrete beams using low grade recycled aggregate has been investigated through six static load test specimens with various moisture conditions and mix proportions of aggregate. Using the recycle aggregate instead of normal aggregate, no obvious degradation was observed in flexural strength, while 30% reduction in shear strength.

Published
2009

26. A unique device enabling electrohydraulic lithotripsy with an ultraslim scope for difficult stones after endoscopic ultrasound-guided biliary drainage.

Author

Atalla, Hassan, Shiomi, Hideyuki, Ikegawa, Takuya, Kobayashi, Takashi, Sakai, Arata, Masuda, Atsuhiro, and Kodama, Yuzo

Subjects
ENDOSCOPIC ultrasonography, GALLSTONES, LITHOTRIPSY, GASTRIC outlet obstruction, COMPUTED tomography, ENDOSCOPIC retrograde cholangiopancreatography
Abstract

An abdominal computed tomography (CT) scan revealed a large common bile duct (CBD) stone (Fig. After saline irrigation of the CBD was achieved, EHL sparks were generated against the large stone that was stuck within the bile duct, leading to its tunneling and then further fragmentation (Fig. [Extracted from the article]

Published
2021
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27. Prospective multicenter evaluation of moving cell metallic stents in endoscopic multiple stent deployment for hepatic hilar obstruction.

Author

Kawai J, Ogura T, Takenaka M, Shiomi H, Ueshima K, Ueno S, Okuda A, Matsuno J, Minaga K, Omoto S, Nakai A, Ikegawa T, Hakoda A, and Higuchi K

Subjects
Humans, Prospective Studies, Retrospective Studies, Stents adverse effects, Treatment Outcome, Bile Duct Neoplasms complications, Bile Duct Neoplasms diagnostic imaging, Bile Duct Neoplasms surgery, Cholestasis diagnostic imaging, Cholestasis etiology, Cholestasis surgery, Liver Diseases, Self Expandable Metallic Stents
Abstract

Background and Aim: Bilateral stent deployment for malignant biliary obstruction (MHBO) can be achieved using side-by-side (SBS) or stent-in-stent (SIS) procedures. Compared with SBS techniques, the procedural steps of SIS are technically complex due to the necessity of introducing the delivery system into a contralateral biliary tract through the mesh of the SEMS. To overcome this issue, a novel uncovered SEMS, the HILZO Moving Cell Stent (MCS) has been released. The present study examined the technical feasibility of treating MHBO using bilateral deployment of this novel stent without dilating the mesh of the first stent to achieve insertion of the second stent within a single session, using a prospective, multicenter setting., Method: The primary outcome in the present study was the technical success rate. Technical success was defined as deployment of bilateral MCSs into two or more biliary tracts using SIS without a dilation device in a single-session., Results: A total of 27 patients with complications of MHBO were enrolled in this study. Bilateral SIS using two MCS was successfully performed in 23 patients without using dilation devices among 27 patients (initial technical success rate; 85.2%). Median time to recurrent biliary obstruction (TRBO) was 271 days. Stent dysfunction was observed in 12 patients (44.4%), and re-intervention was successfully performed in all patients without one patient who instead received best supportive care., Conclusions: The SIS technique using MCS without dilation of the mesh may be technically feasible and safe. In addition, this may be useful for re-intervention. Further comparative randomized trials are needed., (© 2021 Japanese Society of Hepato-Biliary-Pancreatic Surgery.)

Published
2022
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28. [A case of rectovaginal metastasis 6 years after initial resection of extra-gastrointestinal stromal tumor of vulvar origin].

Author

Asada Y, Kuroda K, Shirasaka D, Era Y, Ikegawa T, Arai Y, Nakahara A, Kawano M, Kadowaki Y, and Okino T

Subjects
Female, Humans, Middle Aged, Rectum pathology, Tomography, X-Ray Computed, Vulva pathology, Gastrointestinal Stromal Tumors diagnostic imaging, Gastrointestinal Stromal Tumors surgery, Rectal Neoplasms diagnostic imaging, Rectal Neoplasms pathology, Rectal Neoplasms surgery
Abstract

A 53-year-old woman who had undergone excision of KIT-positive extra-gastrointestinal stromal tumor (EGIST) of the vulva 6 years ago presented to our hospital due to a positive fecal occult blood test. Colonoscopy revealed a submucosal tumor in the rectum ventral side. In addition, computed tomography and magnetic resonance imaging revealed a tumor in the rectovaginal septum. For diagnostic and therapeutic purposes, the tumor was resected via the perineal approach. The resected specimen analysis revealed a KIT-positive gastrointestinal stromal tumor (GIST). Following immunopathological and genetic mutation identifications, GIST of the rectovaginal septum from vulva EGIST metastasis was diagnosed. It is important to consider primary GIST and metastatic GIST as differential diagnoses in the case of a rectal submucosal tumor detected by endoscopy.

Published
2022
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