Annals of Thoracic and Cardiovascular Surgery
Online ISSN : 2186-1005
Print ISSN : 1341-1098
ISSN-L : 1341-1098
Volume 24, Issue 5
Displaying 1-9 of 9 articles from this issue
  • Hirotoshi Kikuchi, Hiroya Takeuchi
    2018 Volume 24 Issue 5 Pages 219-222
    Published: 2018
    Released on J-STAGE: October 19, 2018
    Advance online publication: June 29, 2018

    Esophageal cancer is one of the leading causes of cancer-related death worldwide. Surgery plays an important role in the treatment strategies for esophageal cancer. Recent advances in surgical techniques and perioperative management have dramatically improved the mortality rate; however, esophagectomy remains a highly invasive procedure that can lead to severe postoperative complications. Future advances in thoracoscopic surgery with the development of surgical endoscopy systems such as three-dimensional (3D) imaging systems with a 4K ultra high-definition camera or two-dimensional (2D) imaging systems with an 8K camera, which is expected to provide 3D-like visual sensation, will enable us to further understand the microscopic anatomy of the thoracic cavity and mediastinum, and to perform delicate surgical procedures that enable minimally invasive esophagectomy with mediastinal lymphadenectomy. A robot-assisted thoracoscopic esophagectomy is attractive for surgeons and may be beneficial to esophageal cancer patients. Preoperative simulation and intraoperative real-time navigation are expected to further help surgeons safely perform esophagectomy with lymphadenectomy. Reduction of the lymphadenectomy field and setting of lymphadenectomy areas with highest priority may be feasible when sentinel node (SN) navigation is appropriately performed in cN0 early-stage esophageal cancer. These technical advances are expected to decrease the morbidity and mortality rate of surgery for esophageal cancer and hopefully improve oncological outcomes.

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Original Articles
  • Liming Wang, Masaki Anraku, Masaaki Sato, Jun-ichi Nitadori, Kazuhiro ...
    2018 Volume 24 Issue 5 Pages 223-229
    Published: 2018
    Released on J-STAGE: October 19, 2018
    Advance online publication: May 30, 2018

    Purpose: Early lung adenocarcinoma has been more frequently found recently. The 8th edition of the Union for International Cancer Control (UICC)-Tumor Node Metastasis (TNM) classification for lung cancer has been effective since January 2017. This study aims to elucidate advantages of the current classification for patients with clinical stage 0-IA lung adenocarcinoma, in comparison with the older one.

    Methods: We retrospectively reviewed the data of clinical stage IA (7th edition) lung adenocarcinoma patients who underwent surgery at our institute from 2001 to 2012, and reclassified them by the 8th edition. Survival analysis was used to evaluate the impact of the two classifications.

    Results: In all, 281 cases were eligible. Clinical T-factors (8th) were significant prognostic factors for overall survival (P = 0.001), recurrence-free survival (P <0.001), and cancer-specific survival (P = 0.001). However, those in the previous edition were not (P = 0.894, P = 0.144, and P = 0.822, respectively).

    Conclusion: The 8th edition of the UICC-TNM classification predicts postoperative prognosis more precisely than the 7th one in clinical stage 0-IA lung adenocarcinoma. It is probably because the stage distribution of the population, which included in the research project the 8th edition based on, has been changed, and the new edition develops more accurate staging criteria for ground-glass nodule (GGN).

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  • Carina Benstoem, Bleilevens Christian, Borchardt Ralf, Stoppe Christia ...
    2018 Volume 24 Issue 5 Pages 230-237
    Published: 2018
    Released on J-STAGE: October 19, 2018
    Advance online publication: July 11, 2018

    Purpose: Cardiac surgery with the use of extracorporeal circulation is associated with a significant risk for gaseous microemboli (GME) despite excellent surgical techniques and highest operative standards. GME are associated with postoperative neurocognitive dysfunction and negative clinical outcome. This study determines whether oxygenator design has influence on perioperative outcome after cardiac surgery.

    Methods: Three different oxygenator models with integrated arterial filter (HiliteAF 7000, Fusion Affinity, and Synthesis) were retrospectively evaluated in 55 patients undergoing elective cardiac surgery with the use of extracorporeal circulation. The two-channel ultrasound bubble counter BCC200 was used to detect GME in real time.

    Results: All three oxygenators differ in terms of structural specifications and have different rates of number and volume GME reduction. The Fusion Affinity had the lowest arterial GME volume (1.81 µL ± 0.23 µL), which was statistically significant compared to the Synthesis (3.37 µL ± 0.71 µL, p = 0.014). However, the Synthesis had lower absolute numbers at the venous GME count (31771 µL ± 6579 µL) versus the Fusion Affinity (49304 µL ± 8196 µL). However, with regard to clinical outcome after cardiac surgery (duration of invasive and non-invasive mechanical ventilation, incidence of delirium, stroke, acute renal failure, or new myocardial infarction), we found no differences between groups.

    Conclusion: Despite significant differences in the design specifications, all oxygenators eliminated relevant GME volumes safely.

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  • Henning Johann Steffen, Sebastian Kalverkamp, Rashad Zayat, Rüdiger Au ...
    2018 Volume 24 Issue 5 Pages 238-246
    Published: 2018
    Released on J-STAGE: October 19, 2018
    Advance online publication: June 07, 2018

    Purpose: To assess whether thoracic non-cardiac surgery has an influence on right ventricular function (RVF) compared to known impaired postoperative RV function after cardiac surgery.

    Methods: In all, 50 patients (mean age: 61 years), who underwent thoracic non-cardiac surgery were included and matched using propensity score to 50 patients, receiving coronary artery bypass graft surgery (CABG) (CABGmatched). All patients had transthoracic echocardiography (TTE) including two-dimensional speckle tracking (2D-STE) and tissue Doppler imaging (TDI) pre- and 1 week postoperatively.

    Results: No significant changes in RV measurements including tricuspid annular plane systolic excursion (TAPSE), tricuspid annular systolic velocity (TASV), RV fractional area change (RV-FAC), and 2D-STE of the RV and RV freewall within the thoracic non-cardiac surgery patients comparing pre- and postoperative values. Comparing RV TTE values between CABGmatched patients and thoracic surgery patients, only TAPSE differed between groups preoperatively (p <0.0001), where postoperatively, all RV measurements differed significantly between the two groups: TAPSE (p <0.0001), TASV (p <0.001), RVFAC (p = 0.005), and RV 2D-STE (p <0.0001) indicating impairment of RV function post-CABG surgery compared to thoracic non-cardiac surgery.

    Conclusion: Thoracic non-cardiac surgery including an opening of the pleural cavity did not influence RV function early postoperative, whereas CABG surgery with pericardiotomy led to an impaired global RV function.

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Case Reports
  • Naohiro Taira, Hidenori Kawasaki, Eriko Atsumi, Takaharu Ichi, Tsutomu ...
    2018 Volume 24 Issue 5 Pages 247-250
    Published: 2018
    Released on J-STAGE: October 19, 2018
    Advance online publication: January 23, 2018

    Introduction: Bronchogenic cysts may rupture or become infected, and malignant degeneration may occur. Although various types of malignant degeneration have been described, only a few reports of mucoepidermoid carcinoma arising from a bronchogenic cyst have been published. We report such a case.

    Case: A 77-year-old female was referred to our institution for evaluation of left chest pain. A computed tomography scan showed an enhancing 65 × 70 mm mass of the left diaphragm. Based on the intraoperative findings of an intradiaphragmatic tumor involving the lower lobe of the left lung, the resection of the tumor with the wedge resection of left lower lobe and partial resection of the left diaphragm was performed. Histopathologic examination revealed a mucoepidermoid carcinoma arising from a bronchogenic cyst of the diaphragm with the presence of fibrous adhesion to the lower lobe.

    Conclusion: We believe that complete resection of any bronchogenic cyst is justified.

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  • Kayo Sugiyama, Nobusato Koizumi, Hitoshi Ogino
    2018 Volume 24 Issue 5 Pages 251-254
    Published: 2018
    Released on J-STAGE: October 19, 2018
    Advance online publication: January 10, 2018

    Extrinsic compression of the left main coronary artery (LMCA) can occur in patients with an enlarged pulmonary artery trunk secondary to severe pulmonary hypertension (PH). This phenomenon rarely occurs in PH; moreover, few reports have shown that chronic thromboembolic PH can be a triggering factor for this syndrome. Herein, we describe a patient with extrinsic compression of the LMCA with chronic thromboembolic PH who underwent pulmonary endarterectomy and coronary artery bypass grafting successfully. Intravenous ultrasonography (IVUS) was effective for detecting and assessing the compression.

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  • Maciej Malinowski, Tadeusz Dorobisz, Kornel Pormanczuk, Michał Lesniak ...
    2018 Volume 24 Issue 5 Pages 255-258
    Published: 2018
    Released on J-STAGE: October 19, 2018
    Advance online publication: June 29, 2018

    A deep femoral artery (DFA) aneurysm is a very rare pathology of the vascular system. Peripheral arterial aneurysms constitute 4.6% of all aneurysms, of which 0.13% are DFA aneurysms. In the literature, there are still few reports on this vascular system pathology. As a result, its diagnosis and treatment remain a serious clinical problem. This case study is of a 95-year-old patient admitted to our Department with anemia, swelling, and lower left leg pain. Generally, open surgery seems to be the treatment of choice for DFA aneurysms although the possibilities of intravascular therapy require further investigation.

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New Method
  • Hirotoshi Kubokura, Junichi Okamoto, Jitsuo Usuda
    2018 Volume 24 Issue 5 Pages 259-262
    Published: 2018
    Released on J-STAGE: October 19, 2018
    Advance online publication: May 21, 2018

    Introduction: Hydrothorax due to pleuroperitoneal communication (PPC) can occur in patients undergoing continuous ambulatory peritoneal dialysis (CAPD). We report our experiences of the safety and efficacy of the treatment of four patients with a novel video-assisted thoracoscopy method.

    Methods: Single-port video-assisted thoracoscopic surgery (VATS) was performed with a mini-thoracotomy of 5 cm in length. The PPC site was identified on the diaphragm and ligated using an endoscopic loop. The diaphragm was then covered using a polyglycolic acid (PGA) sheet, over which adhesive chemicals (OK432 and tetracycline) were sprayed.

    Results: We assessed the efficacy of our approach in four patients (one female and three males) aged 42–74 years (mean: 62.0 years). The hydrothoraxes were right sided in all the patients. The mean operation and postoperative drainage times were 92.5 min and 3.0 days, respectively. The hydrothoraxes did not recur in any patient during follow-up periods of 8–46 months.

    Conclusion: Our suture- and staple-free technique is not only easy to perform but also appears to be safe and effective for the management of hydrothorax in patients receiving CAPD. Larger scale studies are now indicated.

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Letter to the Editor