Publications by authors named "Tekkan Woo"

Article Synopsis
  • The study investigates the best timing and criteria for treating postoperative air leaks after lung surgery, as practices vary across hospitals.
  • Using data from a 2019 multicenter study, researchers identified 420 patients with air leaks and compared those who received treatment to those who were only monitored.
  • Key findings showed that factors like low body mass index, type of lung surgery, use of fibrin glue, and the severity of air leaks on the first postoperative day can predict the need for intervention, and that a significant number of air leaks resolved spontaneously within a week.
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Background: Peritoneal lavage cytology positivity (CY1) has been identified as a prognostic factor for distant metastases that is equivalent to peritoneal dissemination in Japan. Peritoneal lavage cytology is usually diagnosed by microscopic findings; a diagnostic procedure using a liquid biopsy (LB) technique has not yet been established.

Patients And Methods: We evaluated the feasibility of a LB approach using peritoneal lavage samples from 15 patients with gastric cancer.

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Background: Several methods for chest drainage after pulmonary resection of malignant lung tumors exist, but consensus on the ideal method has not been reached.

Methods: We conducted a multicenter prospective observational study. We enrolled 2200 patients who underwent lung resection for lung tumors.

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Introduction: Acute exacerbation of interstitial pneumonia (AE-IP) is a lethal complication after lung surgery. We conducted a prospective, multi-institutional phase II trial to assess the efficacy and safety of prophylactic measures.

Method: Patients with lung cancer with dorsal subpleural fibrotic changes occupying three or more segments of both lower lobes and planned anatomical lung resection were enrolled.

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Background: The staging of patients with a tumor of diameter 4.1-5.0 cm and no lymphatic/distant metastases have been up-graded to stage IIA in the latest 8th edition of the TNM staging system.

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Objectives: Our study was designed to visually represent recurrence patterns after surgery for non-small-cell lung cancer (NSCLC) with the use of event dynamics and to clarify postoperative follow-up methods based on the times of recurrence.

Methods: A total of 829 patients with NSCLC who underwent complete pulmonary resection from 2005 to 2007 in 9 hospitals affiliated with the Yokohama Consortium of Thoracic Surgeons were studied. Event dynamics, based on the hazard rate, were evaluated.

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Objectives: Although the prognostic implications of visceral pleural invasion (VPI) are well established, it remains controversial whether the extent of VPI affects survival in patients with completely resected non-small-cell lung cancer (NSCLC). In addition, the impact of VPI according to nodal status is unclear. We evaluated the influence of the extent of pleural invasion on survival by analysing a multicentre retrospective database of patients who had undergone surgery for NSCLC.

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