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  1. No Access

    Article

    Simultaneous occurrence of autoimmune hepatitis and autoimmune hemolytic anemia after COVID-19 infection: case report and literature review

    Various autoimmune diseases have been reported to develop as a result of a coronavirus disease 19 (COVID-19) infection. There have been some reports of COVID-19-triggered autoimmune hepatitis and autoimmune he...

    Ryo Abe, Naoyuki Hasegawa, Satoshi Suzuki in Clinical Journal of Gastroenterology (2024)

  2. Article

    Open Access

    Proton beam therapy for hepatocellular carcinoma with bile duct invasion

    Hepatocellular carcinoma (HCC) with bile duct invasion (BDI) (BDIHCC) has a poor prognosis. Moreover, due to the paucity of reports, there is no consensus regarding optimal management of this clinical conditio...

    Takashi Iizumi, Toshiyuki Okumura, Naoyuki Hasegawa in BMC Gastroenterology (2023)

  3. Article

    Open Access

    Triple modal treatment comprising with proton beam radiation, hyperthermia, and gemcitabine/nab-paclitaxel for locally advanced pancreatic cancer: a phase I/II study protocol (TT-LAP trial)

    Locally advanced pancreatic ductal adenocarcinoma (PDAC), accounting for about 30% of PDAC patients, is difficult to cure by radical resection or systemic chemotherapy alone. A multidisciplinary strategy is re...

    Osamu Shimomura, Masato Endo, Hirokazu Makishima, Takeshi Yamada in BMC Cancer (2023)

  4. Article

    Reply to the Letter to Editor regarding “Autoimmune hepatitis with history of HCV treatment triggered by COVID‑19 vaccination: case report and literature review”

    Naoyuki Hasegawa, Ryota Matsuoka, Naoki Ishikawa in Clinical Journal of Gastroenterology (2022)

  5. Article

    Autoimmune hepatitis with history of HCV treatment triggered by COVID-19 vaccination: case report and literature review

    Although vaccines have been effective against the worldwide pandemic of Coronavirus Disease 19 (COVID-19), some case reports have described autoimmune hepatitis triggered by COVID-19 vaccination. Meanwhile, he...

    Naoyuki Hasegawa, Ryota Matsuoka, Naoki Ishikawa in Clinical Journal of Gastroenterology (2022)

  6. No Access

    Article

    Percutaneous transhepatic obliteration-related procedures for isolated gastric varices: experience of three cases

    Percutaneous transhepatic obliteration (PTO) can facilitate antegrade embolization of variceal veins. We herein report three patients who underwent percutaneous transhepatic sclerotherapy (PTS) or percutaneous...

    Suguru Hirose, Naoyuki Hasegawa, Kensaku Mori in Clinical Journal of Gastroenterology (2022)

  7. No Access

    Article

    A case report: Long-term complete response of metastatic hepatocellular carcinoma obtained after discontinuation of 2-month sorafenib monotherapy

    A 69-year-old woman who had a history of chronic hepatitis C, autoimmune hemolytic anemia and myelodysplastic syndrome was treated with sorafenib at a daily dose of 400 mg for HCC with multiple lung metastases...

    Suguru Hirose, Kazunori Ishige, Masamichi Yamaura in Clinical Journal of Gastroenterology (2020)

  8. No Access

    Article

    Splenic rupture caused by pancreatic pseudocyst successfully treated by endoscopic ultrasound-guided drainage

    A 43-year-old man was admitted to a local hospital because of acute left abdominal pain. Chronic alcoholic pancreatitis and a 10-cm pancreatic pseudocyst in the tail of the pancreas had been found 5 years prev...

    Naoyuki Hasegawa, Yoshimi Ito, Masamichi Yamaura in Clinical Journal of Gastroenterology (2020)

  9. No Access

    Article

    A case of pancreatic-pleural fistula of Type 1 autoimmune pancreatitis successfully treated with pancreatic drainage and steroid

    Pancreatic-pleural fistula is a rare but severe complication with pancreatitis. A 50-year old man with heavy alcoholic history was transferred to our hospital due to pancreatic pleural effusion with diffuse pa...

    Naoyuki Hasegawa, Yuji Yamaguchi, Junji Hattori in Clinical Journal of Gastroenterology (2020)

  10. Article

    Open Access

    Clinical outcomes of previously untreated patients with unresectable intrahepatic cholangiocarcinoma following proton beam therapy

    The effectiveness of proton beam therapy (PBT) as initial treatment for patients with unresectable intrahepatic cholangiocarcinoma (ICC) is unclear, particularly as related to ICC histological subtypes. We per...

    Shosei Shimizu, Toshiyuki Okumura, Yoshiko Oshiro in Radiation Oncology (2019)

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    Article

    Safety margin of radiofrequency ablation for hepatocellular carcinoma: a prospective study using magnetic resonance imaging with superparamagnetic iron oxide

    In radiofrequency ablation (RFA) for hepatocellular carcinoma (HCC), it is difficult to assess the ablative margin (AM) precisely by comparing pre- and post-RFA CT images. We prospectively studied the AMs usin...

    Kuniaki Fukuda, Kensaku Mori, Naoyuki Hasegawa in Japanese Journal of Radiology (2019)

  12. No Access

    Chapter

    Multi-Hazard Early Warning System in Japan

    Japan is located on the “Pacific Ring of Fire” where seismic and volcanic activity is high. As a result, the country has a relatively large number of earthquakes and volcanoes in relation to the very small are...

    Naoyuki Hasegawa, Satoshi Harada in Institutional Partnerships in Multi-Hazard… (2012)

  13. No Access

    Article

    The use of cyclosporine in a boy with a prior episode of posterior encephalopathy

    We report the case of a 12- year-old Japanese boy who was receiving cyclosporine (Cs A) for steroid-dependent nephrotic syndrome despite a prior episode of Cs A-associated posterior encephalopathy. At the thir...

    Chieko Nakahara, Naoyuki Hasegawa, Isho Izumi, Katsuyosi Kanemoto in Pediatric Nephrology (2005)