1.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.
2.A Traumatic Brachial Artery Aneurysm Caused by Long-Term Inappropriate Use of Crutches
Kenta HIGASHI ; Keiji YUNOKI ; Munehiro SAIKI ; Yuto NARUMIYA ; Shohei MORITA ; Teppei TOYA ; Tomoya INOUE ; Atsushi TATEISHI ; Kentaro TAMURA ; Kunikazu HISAMOCHI
Japanese Journal of Cardiovascular Surgery 2025;54(1):42-44
The patient is a 66-year-old woman. She had been taking steroids for some years for rheumatoid arthritis and had been using crutches for some years because of multiple joint deformities. She presented herself to an orthopedic clinic for right upper extremity numbness and was diagnosed with cervical spondylosis and was kept under observation. However, 7 days later, a pulsatile mass on her right upper arm was found and she was referred to our hospital. Contrast-enhanced CT revealed a right brachial artery aneurysm (19×17×16 mm), and the numbness was considered to be a symptom of nerve compression caused by the aneurysm. Since the cause of the brachial artery aneurysm was long-term inappropriate use of crutches, we confirmed that the patient would not use crutches and would use other assistive devices after the surgery, and then performed aneurysm resection and direct anastomosis under general anesthesia. Aneurysms of the upper extremities are rare and are often traumatic or iatrogenic pseudoaneurysms, and surgery is recommended because they can cause complications such as embolism, nerve compression, and rupture. In revascularization in cases where the aneurysm is caused by crutches, it is necessary to consider the risk of recurrence. In our case, we were able to perform direct anastomosis by switching the walking aid from crutches to Lofstrand clutches.
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.Two Cases of Pulmonary Embolectomy Using Retrograde Pulmonary Perfusion for Acute Pulmonary Thromboembolism
Yuki YOSHIOKA ; Kentaro TAMURA ; Yuki OTSUKI ; Atsuhisa ISHIDA ; Genta CHIKAZAWA ; Arudo HIRAOKA ; Toshinori TOTSUGAWA ; Ryusuke SUZUKI ; Hidenori YOSHITAKA ; Taichi SAKAGUCHI
Japanese Journal of Cardiovascular Surgery 2018;47(4):196-200
Pulmonary thromboembolism (PTE) is a life-threatening disease, and in severe cases is required surgical treatment. Emergency pulmonary embolectomy using retrograde pulmonary perfusion (RPP) as an adjunct was successfully performed in 2 patients suffering from massive acute PTE. After removal of the pulmonary thrombus via incision of the pulmonary artery trunk, RPP via the right upper pulmonary vein was performed, which enabled the removal of residual thrombotic material and air from the peripheral branches of pulmonary arteries.
7.An Idiopathic Pulmonary Artery Aneurysm, Treated by Aneurysmectomy and Graft Replacement
Tatsuya Watanabe ; Kentaro Tamura ; Arudo Hiraoka ; Toshinori Totsugawa ; Genta Chikazawa ; Hidenori Yositaka ; Taichi Sakaguchi
Japanese Journal of Cardiovascular Surgery 2017;46(5):264-266
A 61-year old man was referred to our institute under a diagnosis of pulmonary aneurysm. Contrast computed tomography revealed a huge pulmonary aneurysm of 70 mm in maximal dimension at the main pulmonary trunk. No congenital heart disorders were identified on trans-thoracic or trans-esophageal echocardiography. No significant signs of pulmonary hypertension were demonstrated on right heart catheterization. Laboratory findings on admission included positive results for syphilitic antibodies. T-shaped graft replacement of the pulmonary arteries using a cardiopulmonary bypass was scheduled. The main and left pulmonary arteries were replaced with a J-Graft 26 mm in size (Japan Lifeline, Tokyo, Japan). Then, the right pulmonary artery was reconstructed with the rest of the J-Graft, and anastomosed to the side of the newly reconstructed main and left pulmonary arteries. His postoperative course was generally uneventful. Pathological findings of the excised aneurysmal walls revealed true aneurysmal formation with no specific inflammatory changes. This case was considered to be an idiopathic pulmonary aneurysm without congenital heart disorders, pulmonary hypertension, and pathologically inflammatory reactions of aneurysmal walls.
8.Minimally Invasive Aortic Valve Replacement for Jehovah's Witness
Yusuke Irisawa ; Toshinori Totsugawa ; Hidenori Yoshitaka ; Kentaro Tamura ; Atsuhisa Ishida ; Genta Chikazawa ; Norio Mouri ; Arudo Hiraoka ; Hiroshi Matsushita ; Taichi Sakaguchi
Japanese Journal of Cardiovascular Surgery 2014;43(5):287-290
A 64-year-old man with a diagnosis of aortic valve stenosis presented with chest pain. The patient is a Jehovah's Witnesses and wanted surgery without blood transfusion. Therefore, we planned minimally invasive aortic valve replacement (MICS AVR) avoiding sternotomy. He underwent aortic valve replacement with a mechanical valve (ATS AP360 20 mm) through a right anterolateral thoracotomy at the fourth intercostal space. The value of hemoglobin was 11.2 g/dl after surgery. He recovered uneventfully and was discharged 17 days after surgery. MICS AVR has the advantage of less risk of bleeding, therefore MICS AVR is useful for Jehovah's Witness patients who refuse blood transfusion.
9.Reoperation for Stanford B Aortic Dissection with Open Stent Grafting
Kentaro Tamura ; Naomichi Uchida ; Akira Katayama ; Miwa Sutoh ; Naoki Murao ; Masatsugu Kuraoka
Japanese Journal of Cardiovascular Surgery 2010;39(1):41-44
A 65-year-old man had received closure of the entry and false lumen Stanford type B acute aortic dissection via left thoratectomy 23 years previously. The patient underwent emergency graft replacement for a ruptured aneurysm of the thoraco-abdominal aorta 10 years previously. Enhanced computed tomography (ECT) revealed that the residual aortic dissection of the distal arch and the descending aorta were dilated. Reoperation via left thoracotomy usually requires a long cardiopulmonary bypass time and intraoperative bleeding. So we selected to perform open stent-grafting through median sternotomy alone, avoiding a left thoracotomy.
10.Rupture of Left Ventricular Outflow Tract Pseudoaneurysm Concomitant with Infectious Endocarditis
Akira Katayama ; Naomichi Uchida ; Kentaro Tamura ; Miwa Sutoh ; Naoki Murao ; Masatsugu Kuraoka
Japanese Journal of Cardiovascular Surgery 2010;39(6):332-334
An 82-year-old woman fell into a state of shock during the treatment for a urinary tract infection. Computed tomography and transthoracic echocardiography revealed massive pericardial effusion. Pericardiectomy was performed in the operating room and hemorrhagic effusion was observed. Emergent sternotomy was performed, and the bleeding site was located at the posterior portion of the left ventricular outflow. We diagnosed a rupture of a left ventricular outflow tract pseudoaneurysm after infectious endocarditis. A pericardium patch closure of the pseudoaneurysm and an aortic valve replacement were performed. The patient was discharged 35 days after the operation without recurrence of infection. Left ventricular outflow tract pseudoaneurysms is an uncommon complication following infective endocarditis, aortic valve surgery or chest trauma. Transesophageal echocardiography and multidetector-row computed tomography (MDCT) is useful for identifying such lesions.


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