Publications by authors named "Daiko H"

Definitive chemoradiotherapy (dCRT) is the standard treatment for unresectable (T4) esophageal squamous cell carcinoma (ESCC), but the prognosis is poor. Borderline resectable (T3br) ESCC has been discussed, but its clinical features and appropriate treatment are unclear. The effects of docetaxel plus cisplatin and 5-fluorouracil (DCF) therapy and subsequent surgery for potentially unresectable ESCC remain controversial.

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Background: The COVID-19 pandemic had a profound impact on cancer screening, diagnosis, and treatment procedures. We speculated that during the COVID-19 pandemic, sufficient medical resources were maintained in board-certified hospitals, resulting in favorable short-term outcomes, whereas hospital functions in non-board-certified hospitals declined, leading to mortality increase. The aim of this study is to investigate the impact of COVID-19 pandemic on short-term outcomes after esophagectomy, based on the scale of the facilities.

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We described basic procedures and tips for robot-assisted esophagectomy. While it is important to become familiar with robotics technology, understand that it is only one of the tools. Most importantly, we believe that a thorough knowledge of basic surgical techniques will enable us to perform high-level surgery.

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Article Synopsis
  • Lymphovascular invasion (LVI) significantly affects the postoperative prognosis in patients with esophageal squamous cell carcinoma (ESCC) who have undergone neoadjuvant chemotherapy (NAC) and surgery, with separate analysis of lymphatic and venous invasion being infrequently studied.
  • A study involving 427 ESCC patients found that those with venous invasion alone had notably worse survival rates and higher recurrence risks, and those with both lymphatic and venous invasion faced the most severe outcomes.
  • The findings suggest that identifying patients with LVI, particularly those with both types of invasion, could lead to better-targeted postoperative treatments to improve their prognosis and manage the risk of distant metastases.
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  • * Researchers reviewed 114 TPE cases but focused on 94 patients, comparing those who had primary suture closure with those who received p-ALT flap reconstruction.
  • * Results indicated that the p-ALT flap group experienced significantly fewer severe pelvic abscesses and EPS-related readmissions compared to the primary closure group, suggesting it is a more effective reconstruction method.
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  • This study evaluates the effectiveness of Robot-assisted minimally invasive esophagectomy (RAMIE) for treating esophageal cancer at various centers globally, aiming to pinpoint areas for enhancement in surgical outcomes.
  • Over three time periods (2016-2023), data from 28 centers was analyzed, revealing improvements in textbook outcome rates, lymph node yields, and decreased hospital stays, particularly with McKeown procedures.
  • The results showed varying success rates in surgical outcomes and complications, with a noteworthy decrease in anastomotic leakage rates and hospital stays over time, highlighting advancements in surgical techniques.
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  • A study called JCOG1109 investigated the effects of thoracic duct (TD) resection on the survival of patients with esophageal squamous cell carcinoma, comparing different neoadjuvant treatments.
  • Among 601 patients, TD resection did not significantly improve overall survival when looking at the entire group, but some subgroups, particularly those treated with DCF and achieving a good pathological response, showed better survival with TD resection.
  • The findings suggest that TD resection may not benefit all patients, and the relationship between residual tumor burden after treatment and the impact of TD resection on survival needs further exploration.
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  • * In the JCOG0502 trial, 368 patients were observed, where 209 opted for surgery and 159 chose CRT, despite having similar characteristics apart from age.
  • * A study found that patients aged 65 and older, males, those with multiple lesions, those without children, and the advice of their doctor were key factors in choosing CRT, with the doctor's opinion being the most impactful.
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Background: Thoracoscopic esophagectomy is a less invasive surgical procedure; however, evidence of its effect on long-term survival is limited. We evaluated long-term survival after the procedure in patients with esophageal carcinoma.

Methods: This retrospective multicenter study involved 1559 consecutive patients with esophageal carcinoma who underwent thoracoscopic esophagectomy or open esophagectomy between 2012 and 2019 at 2 Japanese high-volume cancer centers.

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  • The study focuses on improving the recognition of the recurrent laryngeal nerve (RLN) during robot-assisted minimally invasive esophagectomy (RAMIE) using an artificial intelligence (AI) model, as RLN palsy is a common surgical complication.
  • Researchers developed the AI model using 120 surgical videos and tested its performance against eight additional videos, measuring accuracy with the Intersection over Union (IoU) metric.
  • The results showed that surgeons using the AI significantly outperformed those without it in both the early identification and recognition of the RLN, demonstrating a substantial increase in accuracy and efficiency during the procedure.
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Background: Minimally invasive robot-assisted cervical esophagectomy has been sporadically reported as a novel thoracic esophagectomy technique for patients with thoracic esophageal carcinoma. Most reports indicate that the abdominal component of robot-assisted cervical esophagectomy is performed sequentially after the cervical phase. However, if the cervical and abdominal phases are performed simultaneously using a nerve integrity monitoring system with no administration of muscle relaxants, there are two major advantages: a reduced risk of recurrent nerve palsy and a shorter operative time.

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Background: Transcervical mediastinoscopic esophagectomy for esophageal and esophagogastric junction cancer is indicated in select institutions because of the complex surgical technique required and the unfamiliar surgical view compared with the standard transthoracic esophagectomy approach. This study was performed to compare the feasibility and efficacy of bilateral transcervical mediastinoscopic-assisted transhiatal laparoscopic esophagectomy (BTC-MATLE) with thoracolaparoscopic esophagectomy (TLE) for esophageal cancer.

Methods: This study involved 392 consecutive patients with esophageal cancer who underwent curative minimally invasive esophagectomy with R0 resection (excluding salvage, conversion, and two-stage operations and open thoracotomy) at the National Cancer Center Hospital from 2017 to 2022.

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Posterior thoracic para-aortic lymph node (TPAN) metastasis is a distant metastasis of esophageal cancer. Several case reports have shown that radical esophagectomy and lymphadenectomy for posterior TPAN improve the prognosis of patients with cStage IVB esophageal cancer and solitary posterior TPAN metastasis; however, the true value of this procedure is unclear. The primary objective of this study was to evaluate the short- and long-term outcomes of lymphadenectomy for posterior TPAN after induction chemotherapy in esophageal cancer.

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Background: Nivolumab monotherapy is the standard second-line treatment for advanced esophageal squamous cell carcinoma (ESCC) after failure of platinum-based chemotherapy without anti-PD-1 antibody. Fixed dosing with 240 mg every 2 weeks was approved initially, followed by fixed dosing with 480 mg every 4 weeks based on pharmacokinetics data. However, information on the comparative efficacy and safety of the two doses remains limited.

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Background: Zinc (Zn), an essential trace element, has an adverse influence on the prognosis of several cancers. However, the association between the preoperative serum Zn level and outcomes in patients with advanced esophageal cancer in the current neoadjuvant treatment era remains unclear.

Methods: This study involved 185 patients with esophageal cancer who underwent R0 surgery after neoadjuvant chemotherapy from August 2017 to February 2021.

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Background: Thoracic esophageal cancer surgery using robotic approaches for the thoracic and abdominal parts has recently been reported as total robot-assisted minimally invasive esophagectomy (RAMIE). We herein present the first report of a new technique for esophageal cancer: total RAMIE with three-field lymph node dissection (3FLND) by a simultaneous two-team approach using a new docking method.

Methods: We reviewed 20 patients who underwent total RAMIE with 3FLND by a simultaneous two-team approach at the National Cancer Center East Hospital from March 2023 to September 2023.

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Background: Neoadjuvant chemotherapy followed by esophagectomy is the standard treatment for resectable advanced esophageal squamous cell carcinoma (ESCC) in Japan. Triplet chemotherapy is the standard neoadjuvant regimen. Inflammatory markers such as neutrophil-to-lymphocyte ratio (NLR) are well-known prognostic factors for esophageal cancer.

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Background: Neoadjuvant therapy is the standard treatment for patients with locally advanced oesophageal squamous cell carcinoma (OSCC). However, the prognosis remains poor and more intensive neoadjuvant treatment might be needed to improve patient outcomes. We therefore aimed to compare the efficacy and safety of neoadjuvant doublet chemotherapy, triplet chemotherapy, and doublet chemotherapy plus radiotherapy in patients with previously untreated locally advanced OSCC.

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Purpose: Abdominal para-aortic lymph nodes (PANs) are sites of distant metastasis in esophageal squamous cell cancer (ESCC). The prognosis of patients with Stage IVB ESCC and abdominal PAN metastasis is extremely poor. However, chemotherapy for ESCC has recently been developed, and the effectiveness of combined induction therapy and conversion surgery remains unclear.

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Background: Minimally invasive esophagectomy is the first-line approach for esophageal cancer; however, there has recently been a paradigm shift toward robotic esophagectomy (RE). We investigated the clinical outcomes of patients who underwent RE compared with those of patients who underwent conventional minimally invasive thoracoscopic esophagectomy (TE) for locally advanced cT3 or cT4 esophageal cancer using a propensity-matched analysis.

Methods: Overall, 342 patients with locally advanced cT3 or cT4 esophageal cancer underwent transthoracic esophagectomy with total mediastinal lymph node dissection between 2018 and 2022.

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Background: The optimal strategy for cervical advanced esophageal cancer remains controversial in terms of oncologic outcome as well as vocal and swallowing function. Recently, in East Asian countries, neoadjuvant chemotherapy (NAC) has been a standard strategy for advanced esophageal cancer.

Methods: This study included 37 patients who underwent NAC, and 33 patients who underwent definitive chemoradiation therapy (dCRT) as larynx-preserving treatment for locally advanced cervical esophageal cancer from 2016 to 2021.

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