Takashi Ofuchi, Masaaki Iwatsuki, Chihiro Matsumoto, Tasuku Toihata, Keisuke Kosumi, Yoshifumi Baba, Yuji Miyamoto, Naoya Yoshida, Hideo Baba
PURPOSE: To compare the short- and long-term outcomes of laparoscopic and open abdominal lymph node dissection using propensity score matching (PSM) analysis. METHODS: The subjects of this retrospective analysis were 459 patients who underwent curative resection for esophageal squamous cell carcinoma (ESCC) between May, 2005 and December, 2019, at our hospital. Patients were divided into two groups: the Laparoscopic (Lap group) and the Open (Open group). Post-PSM, 139 patients from each group were selected for the analysis to compare the short- and long-term outcomes between the groups...
May 21, 2024: Surgery Today
Nobukazu Hokamura, Takeo Fukagawa, Ryoji Fukushima, Takashi Kiyokawa, Masahiro Horikawa, Yoshimasa Kumata, Yusuke Suzuki, Hironori Midorikawa
Definitive chemoradiotherapy (DCRT) is administered as standard treatment for patients with cT4 and/or M1Lym esophageal squamous cell carcinoma (ESCC); however, its long-term result is inadequate. Although several studies have reported that conversion surgery can improve the survival of these patients, none have identified significantly better long-term survival than that achieved by DCRT. Thus, enhancing DCRT seems important to improve the survival of these patients. A strategy of shrinking tumor volume before DCRT and providing consolidation chemotherapy for systemic control is expected to improve the survival of these patients...
May 20, 2024: Surgery Today
Takuya Shiraishi, Hiroomi Ogawa, Arisa Yamaguchi, Yuta Shibasaki, Katsuya Osone, Takuhisa Okada, Makoto Sakai, Makoto Sohda, Ken Shirabe, Hiroshi Saeki
PURPOSE: This study aimed to identify cases in which lateral lymph node (LLN) dissection (LLND) can be excluded by clarifying preoperative factors, including an evaluation of the middle rectal artery (MRA), associated with LLN metastasis. METHODS: Fifty-five consecutive patients who underwent preoperative positron emission tomography-computed tomography (PET/CT) and total mesorectal excision with LLND for rectal cancer were included. We retrospectively investigated the preoperative clinical factors associated with pathological LLN (pLLN) metastasis...
May 20, 2024: Surgery Today
Ruoxin Xu, Wenxiong Zhang
No abstract text is available yet for this article.
May 18, 2024: Surgery Today
Takahiro Shigaki, Hiro Hasegawa, Koichi Teramura, Nobuyoshi Takeshita, Koji Ikeda, Yuichiro Tsukada, Yuji Nishizawa, Takeshi Sasaki, Masaaki Ito
The sigmoid colon simulator was designed to accurately reproduce the anatomical layer structure and the arrangement of characteristic organs in each layer, and to have conductivity so that energy devices can be used. Dry polyester fibers were used to reproduce the layered structures, which included characteristic blood vessels, nerve sheaths, and intestinal tracts. The adhesive strength of the layers was controlled to allow realistic peeling techniques. The features of the Sigmaster are illustrated through a comparison of simulated sigmoidectomy using Sigmaster and actual surgery...
May 14, 2024: Surgery Today
Masamitsu Kido, Satoru Okada, Naoyuki Takashima, Luying Yan, Atsuki Uchibori, Koji Sensaki, Tetsuo Kido, Masayoshi Inoue
PURPOSE: To investigate regional disparities in lung cancer surgery in Japan. METHODS: The annual incidence of lung cancer, lung cancer surgery, and the number of board-certified thoracic surgeons in Japan during 2014-2019 were investigated using a national open database. Lung cancer surgeries were categorized by procedure (wedge resection, segmentectomy, lobectomy, pneumonectomy) and approach (open, thoracoscopic). Disparities in 47 prefectures and urban-rural disparities during 2017-2019 were evaluated using the Gini coefficient and an unpaired t-test...
May 13, 2024: Surgery Today
Ryota Ito, Ryuji Yoshioka, Yu Gyoda, Mamiko Miyashita, Ryoji Furuya, Masahiro Fujisawa, Fumihiro Kawano, Yoshinori Takeda, Hirofumi Ichida, Yoshihiro Mise, Akio Saiura
PURPOSE: Recently, bail-out cholecystectomy (BOC) during laparoscopic cholecystectomy to avoid severe complications, such as vasculobiliary injury, has become widely used and increased in prevalence. However, current predictive factors or scoring systems are insufficient. Therefore, in this study, we aimed to test the validity of existing scoring systems and determine a suitable cutoff value for predicting BOC. METHODS: We retrospectively assessed 305 patients who underwent laparoscopic cholecystectomy and divided them into a total cholecystectomy group (n = 265) and a BOC group (n = 40)...
May 12, 2024: Surgery Today
Shunsuke Saito, Shuji Miyagawa, Takuji Kawamura, Daisuke Yoshioka, Masashi Kawamura, Ai Kawamura, Yusuke Misumi, Takura Taguchi, Takashi Yamauchi, Shigeru Miyagawa
The world's first clinical cardiac xenotransplantation, using a genetically engineered pig heart with 10 gene modifications, prolonged the life of a 57-year-old man with no other life-saving options, by 60 days. It is foreseeable that xenotransplantation will be introduced in clinical practice in the United States. However, little clinical or regulatory progress has been made in the field of xenotransplantation in Japan in recent years. Japan seems to be heading toward a "device lag", and the over-importation of medical devices and technology in the medical field is becoming problematic...
May 11, 2024: Surgery Today
Naoki Takada, Yasuhiro Takano, Atsuko Okamoto, Takafumi Nakano, Yuta Imaizumi, Hiroshi Sugano, Yasuhiro Takeda, Masahisa Ohkuma, Makoto Kosuge, Ken Eto
PURPOSE: Stoma construction and closure are common surgical strategies in patients with colorectal cancer. The present study evaluated the influence of multiple incisional sites resulting from stoma closure on incisional hernia after colorectal cancer surgery. METHODS: The study included 1681 patients who underwent colorectal cancer surgery. Multiple incisional sites were defined as the coexistence of incisions at the midline and stoma closure sites. We retrospectively investigated the relationship between the presence of multiple incisional sites and incisional hernia development in patients with colorectal cancer...
May 8, 2024: Surgery Today
Yihuang Gao, Hongfeng Pan, Jiahong Ye, Haoyang Ruan, Weizhong Jiang, Pan Chi, Ying Huang, Shenghui Huang
PURPOSE: This study aimed to assess the learning curve of robot-assisted intersphincteric resection for low rectal cancer. METHODS: We retrospectively analyzed the clinical data of 89 patients who underwent robot-assisted intersphincteric resection. All surgeries were performed by the same group of surgeons at our institution between June 2016 and April 2021. The learning curve was evaluated using a cumulative sum analysis and the best-fit curve. The different stages of the learning curve were compared based on patient characteristics and short-term clinical outcomes to evaluate their impact on clinical efficacy...
May 8, 2024: Surgery Today
Yudai Miyashita, Eriko Fukui, Hiroto Ishida, Toru Kimura, Takashi Kanou, Naoko Ose, Soichiro Funaki, Yasushi Shintani
PURPOSE: The hemiclamshell (HCS) approach provides a comprehensive view of the anterior mediastinum, whereas the transmanubrial osteomuscular sparing approach (TMA) allows sufficient exposure of the cervico-thoracic transition. We assessed the effectiveness and the outcomes of the combined HCS plus TMA approach to resect thoracic malignant tumors. METHODS: We reviewed five patients with thoracic malignant tumors invading the thoracic outlet who underwent surgery using an HCS and TMA approach between 2018 and 2021...
May 6, 2024: Surgery Today
Ken Onodera, Hirotsugu Notsuda, Tatsuaki Watanabe, Yui Watanabe, Takaya Suzuki, Takashi Hirama, Hisashi Oishi, Hiromichi Niikawa, Masafumi Noda, Yoshinori Okada
PURPOSE: Nutritional scores have been reported to be useful prognostic factors for various cancers. This study evaluated the usefulness of the preoperative controlling nutritional status (CONUT) score as a predictor of recurrence of non-small cell lung cancer (NSCLC). METHODS: The present study included 422 patients with stage I-IIIA NSCLC who underwent complete resection at Tohoku University Hospital between January 2010 and December 2016. The patients were divided into the low-CONUT and high-CONUT groups based on their CONUT scores...
May 6, 2024: Surgery Today
Aya Kato, Masakatsu Numata, Shota Izukawa, Takashi Ohgimi, Hironao Okamoto, Yosuke Atsumi, Keisuke Kazama, Masahiro Asari, Koji Numata, Sho Sawazaki, Takuo Watanabe, Yo Mikayama, Teni Godai, Akio Higuchi, Hiroyuki Saeki, Shinsuke Hatori, Hiroyuki Mushiake, Satomi Matsumoto, Yasushi Rino, Aya Saito, Manabu Shiozawa
PURPOSE: There have been no adequate comparisons of the efficacy, safety, and efficiency of analgesia after laparoscopic colorectal resection (LAC), with and without epidural anesthesia (EDA). METHODS: This was a multicenter prospective observational study of patients undergoing LAC. The primary end point was the mean visual analog scale (VAS) score on postoperative days (PODs) 1-7. The secondary end points were the highest VAS, complication rate, days to first ambulation and fatigue, length of hospital stay, and time to commencement of surgery...
May 4, 2024: Surgery Today
Kazuki Hayasaka, Hirotsugu Notsuda, Ken Onodera, Tatsuaki Watanabe, Yui Watanabe, Takaya Suzuki, Takashi Hirama, Hisashi Oishi, Hiromichi Niikawa, Yoshinori Okada
PURPOSE: This single-institution retrospective cohort study was conducted to assess the prognostic significance of perioperative changes in the prognostic nutritional index (PNI) in patients who underwent surgery for non-small cell lung cancer (NSCLC). METHODS: Clinicopathological data were collected from 441 patients who underwent lobectomy for NSCLC between 2010 and 2016.The PNI ratio (postoperative PNI/preoperative PNI) was used as an indicator of perioperative PNI changes...
May 3, 2024: Surgery Today
Shin-Nosuke Watanabe, Kazuhiro Imai, Masafumi Mitsui, Takashi Ono, Hiroshi Toda, Shinogu Takashima, Nobuyasu Kurihara, Ryo Demura, Tatsuki Fujibayashi, Yoshihiro Minamiya
PURPOSE: To assess the risk factors for thrombosis in the pulmonary vein stump (PVT) and the efficacy of proximal ligation in preventing PVT after lobectomy. METHODS: In total, 649 surgical patients with lung cancer were retrospectively reviewed. To compare the clinical effectiveness of PV proximal ligation, the simple stapler group (290 patients) and the proximal ligation group (359 patients who underwent thread ligation at the pericardial reflection with/without a stapler) were analyzed...
May 3, 2024: Surgery Today
Shinkichi Takamori, Tomoyoshi Takenaka, Mototsugu Shimokawa, Asato Hashinokuchi, Kyoto Matsudo, Taichi Nagano, Mikihiro Kohno, Naoko Miura, Tomoharu Yoshizumi
PURPOSES: Polyglycolic acid (PGA) sheets, fibrin glue, and staple line reinforcement are frequently used to prevent air leakage during lung resection. However, the optimal staple-line reinforcement method remains unclear. METHODS: Cranial lung lobes of pigs were used to evaluate different staple line reinforcement methods (n = 6). Ventilator-assisted manometry was used to measure the maximum resistance pressure at the time of rupture of the lung tissue after stapling...
May 1, 2024: Surgery Today
Yohei Sanmoto, Makoto Hasegawa, Shunji Kinuta
PURPOSE: Laparoscopic cholecystectomy for a benign disease is often the initial endoscopic surgery performed by trainee surgeons. However, a lack of surgical experience is associated with prolonged operative times, which may increase the risk of postoperative complications and poor outcomes. This study aimed to identify the factors associated with prolonged operative times for laparoscopic cholecystectomy performed by inexperienced surgeons. METHODS: This retrospective single-center study was conducted between January 2018 and December 2023...
April 30, 2024: Surgery Today
Yuya Nyumura, Kazuto Tsuboi, Toshimasa Suzuki, Tetsuya Kajimoto, Yuichiro Tanishima, Fumiaki Yano, Ken Eto
PURPOSE: To compare the pathophysiology and surgical outcomes of emergency surgery for upper gastrointestinal tract perforation with and without fungal peritonitis and identify the risk factors for fungal peritonitis. METHODS: The subjects of this retrospective study were patients with upper gastrointestinal perforation and peritonitis who underwent emergency surgery at a single medical center in Japan. The patients were allocated to two groups according to the presence or absence of fungal peritonitis: group F and group N, respectively...
April 30, 2024: Surgery Today
Koichiro Haruki, Masashi Tsunematsu, Kazutaka Gomisawa, Hirokazu Ashida, Kenei Furukawa, Yoshihiro Shirai, Yuta Yamada, Shun Sato, Shinji Onda, Toru Ikegami
PURPOSE: Simultaneous dual hepatic vein embolization (DHVE) has been proposed for safe right-sided hepatectomy, with good results for liver hypertrophy and function. However, the histological and radiological findings of DHVE have not been thoroughly investigated. METHODS: This study included 14 patients who underwent DHVE before right-sided major hepatectomy. DHVE was performed if the future liver remnant was < 35% or borderline, but with concomitant vascular resection...
April 30, 2024: Surgery Today
Jing Zhao, Yue Bi
No abstract text is available yet for this article.
April 29, 2024: Surgery Today
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