1.A combined approach using conventional endoscopy and endoscopic ultrasonography findings yields a highly accurate diagnosis of T2-muscularis propria gastric cancer
Yoshiki TSUJII ; Kentaro NAKAGAWA ; Ryotaro UEMA ; Shunsuke YOSHII ; Masashi YAMAMOTO ; Shinjiro YAMAGUCHI ; Yoshito HAYASHI ; Tetsuo TAKEHARA
Clinical Endoscopy 2026;59(1):151-155
2.Effect of Intraoperative Ventricular Opening on Recurrence Patterns Following Bis-Chloroethyl-Nitrosourea Wafer Implantation for Newly Diagnosed Glioblastoma
Ryosuke MATSUDA ; Ryosuke MAEOKA ; Takayuki MORIMOTO ; Tsutomu NAKAZAWA ; Noriaki TOKUDA ; Masashi KOTSUGI ; Yasuhiro TAKESHIMA ; Kentaro TAMURA ; Shuichi YAMADA ; Fumihiko NISHIMURA ; Young-Soo PARK ; Ichiro NAKAGAWA
Journal of Korean Neurosurgical Society 2025;68(1):60-66
Objective:
: To evaluate the effect of ventricular opening (VO) on recurrence patterns in patients with newly diagnosed glioblastoma (GBM) treated with bis-chloroethyl-nitrosourea (BCNU) wafer implantation.
Methods:
: This single-center retrospective study included 40 patients with newly diagnosed GBM who received BCNU wafer implantation after tumor resection between March 2013 and February 2022. The patients were categorized into two groups based on whether VO occurred during the GBM resection. While 18 patients had VO, 22 did not have VO. In cases with VO, the ventricular wall defect is closed with gelatin or oxidized regenerated cellulose and fibrin glue before BCNU wafer implantation. Recurrence patterns—classified as local, diffuse, distant, or multifocal—and time to recurrence were compared between patients with and without VO.
Results:
: The median follow-up period for the entire cohort was 32.2 months (interquartile range, 16.7–38 months). Median survival time was comparable between patients with VO and patients without VO (38 vs. 26 months, p=0.53). Recurrence occurred in 31/40 patients (77.5%) in entire cohort. The incidence of recurrence was comparable between patients with VO and patients without VO (14 [77.8%] vs. 17 [77.3%], p=1.0). No significant differences were seen between the two groups in time to recurrence (p=0.59) or recurrence patterns (p=0.35).
Conclusion
: Ventricular opening during surgery with BCNU wafer implantation does not seem to influence the recurrence patterns. Ventricular opening does not induce distant recurrence if appropriate ventricular closure is performed.
3.Effect of Intraoperative Ventricular Opening on Recurrence Patterns Following Bis-Chloroethyl-Nitrosourea Wafer Implantation for Newly Diagnosed Glioblastoma
Ryosuke MATSUDA ; Ryosuke MAEOKA ; Takayuki MORIMOTO ; Tsutomu NAKAZAWA ; Noriaki TOKUDA ; Masashi KOTSUGI ; Yasuhiro TAKESHIMA ; Kentaro TAMURA ; Shuichi YAMADA ; Fumihiko NISHIMURA ; Young-Soo PARK ; Ichiro NAKAGAWA
Journal of Korean Neurosurgical Society 2025;68(1):60-66
Objective:
: To evaluate the effect of ventricular opening (VO) on recurrence patterns in patients with newly diagnosed glioblastoma (GBM) treated with bis-chloroethyl-nitrosourea (BCNU) wafer implantation.
Methods:
: This single-center retrospective study included 40 patients with newly diagnosed GBM who received BCNU wafer implantation after tumor resection between March 2013 and February 2022. The patients were categorized into two groups based on whether VO occurred during the GBM resection. While 18 patients had VO, 22 did not have VO. In cases with VO, the ventricular wall defect is closed with gelatin or oxidized regenerated cellulose and fibrin glue before BCNU wafer implantation. Recurrence patterns—classified as local, diffuse, distant, or multifocal—and time to recurrence were compared between patients with and without VO.
Results:
: The median follow-up period for the entire cohort was 32.2 months (interquartile range, 16.7–38 months). Median survival time was comparable between patients with VO and patients without VO (38 vs. 26 months, p=0.53). Recurrence occurred in 31/40 patients (77.5%) in entire cohort. The incidence of recurrence was comparable between patients with VO and patients without VO (14 [77.8%] vs. 17 [77.3%], p=1.0). No significant differences were seen between the two groups in time to recurrence (p=0.59) or recurrence patterns (p=0.35).
Conclusion
: Ventricular opening during surgery with BCNU wafer implantation does not seem to influence the recurrence patterns. Ventricular opening does not induce distant recurrence if appropriate ventricular closure is performed.
4.Effect of Intraoperative Ventricular Opening on Recurrence Patterns Following Bis-Chloroethyl-Nitrosourea Wafer Implantation for Newly Diagnosed Glioblastoma
Ryosuke MATSUDA ; Ryosuke MAEOKA ; Takayuki MORIMOTO ; Tsutomu NAKAZAWA ; Noriaki TOKUDA ; Masashi KOTSUGI ; Yasuhiro TAKESHIMA ; Kentaro TAMURA ; Shuichi YAMADA ; Fumihiko NISHIMURA ; Young-Soo PARK ; Ichiro NAKAGAWA
Journal of Korean Neurosurgical Society 2025;68(1):60-66
Objective:
: To evaluate the effect of ventricular opening (VO) on recurrence patterns in patients with newly diagnosed glioblastoma (GBM) treated with bis-chloroethyl-nitrosourea (BCNU) wafer implantation.
Methods:
: This single-center retrospective study included 40 patients with newly diagnosed GBM who received BCNU wafer implantation after tumor resection between March 2013 and February 2022. The patients were categorized into two groups based on whether VO occurred during the GBM resection. While 18 patients had VO, 22 did not have VO. In cases with VO, the ventricular wall defect is closed with gelatin or oxidized regenerated cellulose and fibrin glue before BCNU wafer implantation. Recurrence patterns—classified as local, diffuse, distant, or multifocal—and time to recurrence were compared between patients with and without VO.
Results:
: The median follow-up period for the entire cohort was 32.2 months (interquartile range, 16.7–38 months). Median survival time was comparable between patients with VO and patients without VO (38 vs. 26 months, p=0.53). Recurrence occurred in 31/40 patients (77.5%) in entire cohort. The incidence of recurrence was comparable between patients with VO and patients without VO (14 [77.8%] vs. 17 [77.3%], p=1.0). No significant differences were seen between the two groups in time to recurrence (p=0.59) or recurrence patterns (p=0.35).
Conclusion
: Ventricular opening during surgery with BCNU wafer implantation does not seem to influence the recurrence patterns. Ventricular opening does not induce distant recurrence if appropriate ventricular closure is performed.
5.Effect of Intraoperative Ventricular Opening on Recurrence Patterns Following Bis-Chloroethyl-Nitrosourea Wafer Implantation for Newly Diagnosed Glioblastoma
Ryosuke MATSUDA ; Ryosuke MAEOKA ; Takayuki MORIMOTO ; Tsutomu NAKAZAWA ; Noriaki TOKUDA ; Masashi KOTSUGI ; Yasuhiro TAKESHIMA ; Kentaro TAMURA ; Shuichi YAMADA ; Fumihiko NISHIMURA ; Young-Soo PARK ; Ichiro NAKAGAWA
Journal of Korean Neurosurgical Society 2025;68(1):60-66
Objective:
: To evaluate the effect of ventricular opening (VO) on recurrence patterns in patients with newly diagnosed glioblastoma (GBM) treated with bis-chloroethyl-nitrosourea (BCNU) wafer implantation.
Methods:
: This single-center retrospective study included 40 patients with newly diagnosed GBM who received BCNU wafer implantation after tumor resection between March 2013 and February 2022. The patients were categorized into two groups based on whether VO occurred during the GBM resection. While 18 patients had VO, 22 did not have VO. In cases with VO, the ventricular wall defect is closed with gelatin or oxidized regenerated cellulose and fibrin glue before BCNU wafer implantation. Recurrence patterns—classified as local, diffuse, distant, or multifocal—and time to recurrence were compared between patients with and without VO.
Results:
: The median follow-up period for the entire cohort was 32.2 months (interquartile range, 16.7–38 months). Median survival time was comparable between patients with VO and patients without VO (38 vs. 26 months, p=0.53). Recurrence occurred in 31/40 patients (77.5%) in entire cohort. The incidence of recurrence was comparable between patients with VO and patients without VO (14 [77.8%] vs. 17 [77.3%], p=1.0). No significant differences were seen between the two groups in time to recurrence (p=0.59) or recurrence patterns (p=0.35).
Conclusion
: Ventricular opening during surgery with BCNU wafer implantation does not seem to influence the recurrence patterns. Ventricular opening does not induce distant recurrence if appropriate ventricular closure is performed.
6.Clinicopathologic features, treatment, prognosis and prognostic factors of neuroendocrine carcinoma of the endometrium: a retrospective analysis of 42 cases from the Kansai Clinical Oncology Group/Intergroup study in Japan
Harunobu MATSUMOTO ; Mototsugu SHIMOKAWA ; Kaei NASU ; Ayumi SHIKAMA ; Takaya SHIOZAKI ; Masayuki FUTAGAMI ; Kentaro KAI ; Hiroaki NAGANO ; Taisuke MORI ; Mitsutake YANO ; Norihiro SUGINO ; Etsuko FUJIMOTO ; Norihito YOSHIOKA ; Satoshi NAKAGAWA ; Muneaki SHIMADA ; Hideki TOKUNAGA ; Yuki YAMADA ; Tomohiko TSURUTA ; Kazuto TASAKI ; Ryutaro NISHIKAWA ; Shiho KUJI ; Takashi MOTOHASHI ; Kimihiko ITO ; Takashi YAMADA ; Norihiro TERAMOTO
Journal of Gynecologic Oncology 2019;30(6):e103-
OBJECTIVE: We conducted a retrospective, multi-institutional, collaborative study to accumulate cases of neuroendocrine carcinoma of the endometrium, to clarify its clinicopathologic features, treatment, prognosis and prognostic factors to collate findings to establish future individualized treatment regimens. To our knowledge, this is the largest case study and the first study to statistically analyze the prognosis of this disease. METHODS: At medical institutions participating in the Kansai Clinical Oncology Group/Intergroup, cases diagnosed at a central pathologic review as neuroendocrine carcinoma of the endometrium between 1995 and 2014 were enrolled. We retrospectively analyzed the clinicopathologic features, treatment, prognosis and prognostic factors of this disease. RESULTS: A total of 65 cases were registered from 18 medical institutions in Japan. Of these, 42 (64.6%) cases were diagnosed as neuroendocrine carcinoma of the endometrium based on the central pathological review and thus included in the study. Advanced International Federation of Gynecology and Obstetrics stages (stage III and IV) and pure type small cell neuroendocrine carcinoma cases had a significantly worse prognosis. Upon multivariate analysis, only histologic subtypes and surgery were significant prognostic factors. Pure type cases had a significantly worse prognosis compared to mixed type cases and complete surgery cases had a significantly better prognosis compared to cases with no or incomplete surgery. CONCLUSION: Our findings suggest that complete surgery improves the prognosis of neuroendocrine carcinoma of the endometrium. Even among cases with advanced disease stages, if complete surgery is expected to be achieved, clinicians should consider curative surgery to improve the prognosis of neuroendocrine carcinoma of the endometrium.
Carcinoma, Large Cell
;
Carcinoma, Neuroendocrine
;
Carcinoma, Small Cell
;
Endometrial Neoplasms
;
Endometrium
;
Female
;
Gynecology
;
Japan
;
Medical Oncology
;
Multivariate Analysis
;
Obstetrics
;
Prognosis
;
Retrospective Studies
7.Spontaneous Low Cerebrospinal Fluid Pressure Headache Initially Misdiagnosed as a Tension-type Headache
Hisashi Nishisako ; Hiroyuki Kunishima ; Gohji Shimizu ; Yoshiyuki Naitou ; Yoko Teruya ; Masatoshi Yokokawa ; Kentaro Masui ; Masanori Hirose ; Tsubasa Sakai ; Yukitaka Yamasaki ; Tomoya Tsuchida ; Takaaki Nemoto ; Keito Torikai ; Teisuke Nakagawa ; Takahide Matsuda
General Medicine 2014;15(1):43-46
We report the case of a 34-year-old man who was initially diagnosed with a tension-type headache after complaining of a headache and nausea. His headache worsened in severity and it was exacerbated on standing in the upright position. The patient was admitted to the hospital on suspicion of spontaneous low cerebrospinal fluid (CSF) pressure headache. Gadolinium-enhanced brain magnetic resonance imaging (MRI) revealed diffuse pachymeningeal enhancement, brain sagging, cerebellar tonsillar herniation, brainstem descent and a subdural hematoma. Successful emergency surgery was undertaken.
Spontaneous low CSF pressure headache syndrome is characterized by orthostatic headache, and if such a headache worsens, clinicians should consider a subdural hematoma, a life-threatening complication of this unusual disorder.
8.General Education Course in Medical Schools. Report from the Committee for Faculty Education of the Japan society for Medical Education
Fumimaro TAKAKU ; Kohei NAKANO ; Tsutomu IWABUCHI ; Hidenobu MASHIMA ; Yonezo NAKAGAWA ; Kentaro NAKAYAMA ; Kuniomi OKA ; Kenichi UEMURA ; Yujiro IKEMI ; Daizo USHIBA
Medical Education 1980;11(2):115-118


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