Advantages of a larger working channel diameter of ultrathin bronchoscope in cone-beam computed tomography-guided transbronchial biopsy for diagnosing peripheral lung lesions.

Background And Objective: Cone-beam computed tomography (CBCT)-guided transbronchial biopsy (TBB) using an ultrathin bronchoscope (UTB) under virtual bronchoscopic navigation (VBN) is a useful method for diagnosing peripheral pulmonary lesions. A 1.2 mm working channel UTB (SC-UTB) and a 1.

Intraoperative Transbronchial Metallic Coil Marking for Small Peripheral Pulmonary Lesions in a Hybrid Operation Room.

: Computed tomography (CT)-guided transbronchial metallic coil marking is useful for identifying the locations of small peripheral pulmonary lesions. Even deeply located lesions may be accurately identified and resected with adequate margins. This method is also applicable to multiple lesions.

Intraoperative transbronchial metallic coil marking guided by mobile 3D C-arm for resection of a small peripheral lung lesion.

Sublober resection of small peripheral lung lesions using video-assisted thoracoscopic surgery may require marking and confirmation using 3D imaging in the interventional radiology suite or in the hybrid operating room (HOR) before surgery is started. We report a novel approach for intraoperative transbronchial metallic coil marking followed by thoracoscopic wedge resection in a conventional operating room under mobile 3D C-arm guidance. Under general anesthesia, an ultrathin video-bronchoscope was inserted into an objective bronchus guided with virtual bronchoscopic navigation, and a coil-feeding microcatheter was introduced through the bronchoscope's channel.

Impact of interstitial lung disease gender-age-physiology index in surgically treated lung cancer.

Background: The postoperative prognosis of patients with interstitial lung disease (ILD) and lung cancer is poor. Recently, the ILD-gender-age-physiology (GAP) index was identified as a clinical prognostic factor for patients with ILD. This study investigated the ILD-GAP index and oncological factors regarding postoperative outcomes.

Robot-assisted thoracoscopic resection of a posterior mediastinal tumor with immunoglobulin G4-related disease: a case report.

Background: Immunoglobulin (Ig)G4-related disease affects nearly every organ, and its clinical course varies depending on the involved organ; however, its occurrence in the mediastinum is rarely reported.

Case Presentation: A 58-year-old woman presented with a posterior mediastinal tumor along the thoracic spine on imaging. Based on her elevated serum IgG4 level of 349.

Pulmonary adenocarcinoma in situ with morule - like components: A surgical case report.

Unusual lung adenocarcinoma with morule-like components is characterized by uniform, tightly packed spindle-shaped cells filling the lumens of neoplastic glandular structures. We present a case of a 78-year-old woman who presented with a part-solid ground-glass nodule in the upper lobe of the right lung. Following right upper lobectomy, histological examination revealed adenocarcinoma in-situ with multiple morule-like intra-alveolar proliferative nests of epithelial cells.

Aberrant DNA Methylation of NPTX2 as an Indicator of Malignant Behavior in Thymic Epithelial Tumors.

Thymic epithelial tumors (TET) consist of thymomas, thymic carcinoma (TC), and neuroendocrine tumors of the thymus (NECTT). Genetic and epigenetic alterations in TET have been the focus of recent research. In the present study, genome-wide screening was performed on aberrantly methylated CpG islands in TET, and this identified neuronal pentraxin 2 (NTPX2) as a significantly hypermethylated CpG island in TC relative to thymomas.

Assessment of dyspnea, ADL, and QOL in the perioperative period in lung cancer patients treated with minimally invasive surgery.

Objective: Patients with lung cancer generally undergo minimally invasive surgery, such as video-assisted thoracoscopic surgery (VATS). This study examined the changes in health conditions and symptoms of patients with lung cancer using the European Organization for Research and Treatment of Cancer-Quality of Life Questionnaire (EORTC QLQ) C-30 questionnaires after surgery.

Methods: This was a longitudinal descriptive study.

Lung regeneration with rat fetal lung implantation and promotion of alveolar stem cell differentiation by corticosteroids.

Introduction: The lung is a difficult organ to regenerate, and the development of functional lungs has still not been achieved. In this study, we investigated lung regeneration using a rat fetal lung tissue-implanted model. This study aimed to evaluate the functioning of the implanted fetal lung tissue and investigate the graft differentiation and maturation mechanism, focusing on alveolar stem cells.

Surgical training in extended sleeve lobectomy with fresh-frozen human cadavers: a case report.

Background: Extended sleeve lobectomy is a useful technique for avoiding pneumonectomy; however, it requires advanced surgical skills.

Case Presentation: Herein, we report the case of a 67-year-old male, who presented with locally advanced lung adenocarcinoma in the left lower lobe and was scheduled to undergo extended sleeve lobectomy (left lower lobectomy + lingulectomy). In order to complete this operation safely, we practiced the procedure on fresh-frozen human cadavers 2 weeks before the surgery.

Surgical resection of micronodular thymic carcinoma with lymphoid hyperplasia: a case report.

Background: Micronodular thymic carcinoma with lymphoid hyperplasia is an extremely rare thymic tumor, exhibiting a variety of cell morphologies with mild to severe dysmorphism. Since few cases have been reported, the prognosis of this disease is unclear.

Case Presentation: A 55-year-old woman was referred to our hospital with an anterior mediastinal tumor.

Aberrant methylation of dipeptidyl peptidase‑like 6 as a potential prognostic biomarker for lung adenocarcinoma.

We previously performed the genome-wide screening of aberrantly methylated CpG islands (CGIs) using the paired tumorous and non-tumorous tissues of 12 lung adenocarcinomas (LADC). In comparisons with paired normal lung tissues, dipeptidyl peptidase-like 6 () has been identified as the most significantly hypermethylated CGI in LADC. is a protein that modulates A-type potassium channels in the somatodendritic compartments of neurons, which play a role in synaptic plasticity.

Cone-beam computed tomography-guided endobronchial ultrasound using an ultrathin bronchoscope for diagnosis of peripheral pulmonary lesions: a prospective pilot study.

Background: Multimodal transbronchial biopsy (TBB) may have improved diagnostic yield for peripheral pulmonary lesions suspected as lung cancer. Radial endobronchial ultrasound (R-EBUS) provides real-time imaging and confirmation of the location of the lesions. Cone-beam computed tomography (CBCT) can confirm that the forceps tip has reached the lesion before biopsy.

methylation-dependent expression of a variant ligand and receptor of the ghrelin system induces thymoma tumorigenesis.

Our previous study reported that the DNA methylation of growth hormone secretagogue receptor () was significantly higher in thymoma or thymic carcinoma (TC) than in normal thymic tissue samples. Thymic epithelial tumors (TETs) with higher DNA methylation were associated with significantly worse prognosis than those with lower levels of DNA methylation. Diversified components of the ghrelin- axis may exert opposing effects in cancer progression, depending on the cancer type in question.

Diagnosis of visceral pleural invasion using confocal laser endomicroscopy during lung cancer surgery.

Background: Visceral pleural invasion (VPI) in lung cancer is a significant prognostic factor; however, it is difficult to diagnose preoperatively or intraoperatively. In this study, we examined the possibility of intraoperative diagnosis of VPI using confocal laser endomicroscopy (CLE).

Methods: Among patients with primary lung cancer who underwent surgery between April 2018 and August 2019, those in whom the tumor was in contact with the pleura on chest computed tomography and whose pleural changes were intraoperatively confirmed were enrolled in this study.

Hypervascularized bronchial arteries as a risk factor for intraoperative bleeding and prolonged surgery.

Background: The present study investigated whether highly vascularized bronchial arteries affect the intraoperative blood loss and the operative time of video-assisted thoracic surgery (VATS) lobectomy for patients with non-small cell lung cancer. We retrospectively collected data on consecutive pathological stage I to IIIA non-small cell lung cancer patients who underwent VATS lobectomy with systematic lymph node dissection between January 2017 and December 2019. Patients were divided into the following two groups according to bronchial artery diameters on preoperative enhanced contrast computed tomography (CT) findings: ≤2 and >2 mm groups.

Diversity of lymphatic flow in patients with lung cancer revealed by computed tomography lymphography.

Objectives: This study was conducted to verify the optimal extent of lymph node dissection or sampling during lung cancer surgery based on the sentinel node (SN) map created by computed tomography (CT) lymphography.

Methods: From April 2010 to January 2015, patients with clinical stage I non-small-cell lung cancer, who were candidates for lobectomy or segmentectomy with standard hilar and mediastinal lymph node dissection, and in whom bronchus reached the tumour, were enrolled. An ultrathin bronchoscope was inserted to the target bronchus under the guidance of virtual bronchoscopic navigation images.

GAD1 expression and its methylation as indicators of malignant behavior in thymic epithelial tumors.

Thymic epithelial tumors (TETs) comprise thymomas and thymic carcinoma (TC). TC has more aggressive features and a poorer prognosis than thymomas. Genetic and epigenetic alterations in thymomas and TC have been investigated in an attempt to identify novel target molecules for TC.

Cone-beam computed tomography versus computed tomography-guided ultrathin bronchoscopic diagnosis for peripheral pulmonary lesions: A propensity score-matched analysis.

Background And Objective: CBCT-guided TBB using a UTB under VBN is a useful method for the diagnosis of peripheral small pulmonary lesions. CBCT-guided TBB using UTB under VBN has been used as an alternative to CT-guided TBB. However, the advantage of CBCT-guided TBB using UTB under VBN over CT-guided TBB is still unknown.

Classifying the destination of right top pulmonary vein in 31 clinical cases.

Disruption in the flow of blood vessels is of great concern during thoracic surgery. Preoperative 3-dimensional computed tomography facilitates visualization of the exact location and course of blood vessels. The right posterior upper lobe segmental vein, known as the right top pulmonary vein (RTPV), is an anomalous vein beginning at the right upper lobe and running through the posterior surface of the intermediate bronchus.

Lobectomy for lung cancer with a displaced left B and an anomalous pulmonary vein: a case report.

Background: A displaced left B accompanied by an anomalous pulmonary vein is a rare condition involving complex structures. There is a risk of unexpected injuries to bronchi and blood vessels when patients with such anomalies undergo surgery for lung cancer.

Case Presentation: A 59-year-old male with suspected lung cancer in the left lower lobe was scheduled to undergo surgery.