Surgical outcomes and learning curve of complex versus simple segmentectomy for uniportal video-assisted thoracoscopic surgery: an initial experience of 100 cases of a single experienced surgeon.

Background: Complex segmentectomy for uniportal video-assisted thoracoscopic surgery (VATS) remains controversial due to procedural complexity and the risk of increased complications, unlike multiportal VATS. Demonstrating the perioperative results and proficiency of individual surgeon is believed to influence future dissemination for uniportal VATS. In this study, we aimed to compare the perioperative outcomes and learning curves of complex versus simple segmentectomy for uniportal VATS.

Predictive factors of early autologous blood pleurodesis for postoperative air leak.

Background: The usefulness of autologous blood pleurodesis for air leak after pulmonary resection is well known; however, factors predicting the therapeutic efficacy are poorly understood. Herein, we aimed to examine the predictors of early autologous blood pleurodesis for air leak following pulmonary resection.

Methods: Patients who underwent pulmonary resection and autologous blood pleurodesis with thrombin for postoperative air leak between January 2016 and October 2022 were retrospectively analyzed.

Prediction of visceral pleural invasion of clinical stage I lung adenocarcinoma using thoracoscopic images and deep learning.

Purpose: To develop deep learning models using thoracoscopic images to identify visceral pleural invasion (VPI) in patients with clinical stage I lung adenocarcinoma, and to verify if these models can be applied clinically.

Methods: Two deep learning models, one based on a convolutional neural network (CNN) and the other based on a vision transformer (ViT), were applied and trained via 463 images (VPI negative: 269 images, VPI positive: 194 images) captured from surgical videos of 81 patients. Model performances were validated via an independent test dataset containing 46 images (VPI negative: 28 images, VPI positive: 18 images) from 46 test patients.

Factors affecting insulation failure in reusable surgical devices.

The purpose of this study was to investigate the associated factors of insulation failure (IF) in reusable endoscopic instruments. The insulation coating of reusable endoscopic instruments underwent routine visual checks, hand washing to remove visible stains, and mechanized sterilization. We recorded the cleaning number and usage period of all instruments.

Metachronous bilateral immunoglobulin G4-related pleuritis: A case report and literature review.

Immunoglobulin G4-related disease (IgG4-RD) is a newly recognized disease, and therefore its clinical features are not yet fully understood. Here, we describe a surgical case of metachronous bilateral IgG4-related pleuritis and postoperative chylothorax. This case could provide key insights into the pathology of IgG4-RD from a surgical perspective.

Experiences of novel cotton device for uniportal video-assisted thoracoscopic surgery: CS Two-Way Handle.

In Japan, cotton is commonly used in thoracic surgery for the gentle handling of organs as well as obtaining a good surgical field. While uniportal video-assisted thoracoscopic surgery is being recognized as a major surgical approach, use of cotton is not noted in this technique. Uniportal video-assisted thoracoscopic surgery needs curved instruments because they are effective in preventing the interference of instruments.

Preoperative umeclidinium/vilanterol or tiotropium improves postoperative FEV in lung cancer patients with comorbid untreated chronic obstructive pulmonary disease.

Background: This study aimed to examine the effects of preoperative interventions in lung cancer patients with untreated chronic obstructive pulmonary disease (COPD). We evaluated the efficiency of preoperative interventions using tiotropium (TIO) or umeclidinium/vilanterol (UMEC/VI).

Methods: We conducted a two-center retrospective study.

Multicellular structures in thin free liquid films induced by thermocapillary effect.

Hypothesis: Multicellular convective structures that are induced in a fluid exposed to temperature difference are commonly observed in nature and in daily life. Different types of basic flow patterns are induced in a free liquid film by thermocapillary effect, whereas the formation of such multicellular structures has not been hitherto unravelled.

Experiments: A thin film of high-Prandtl-number liquid is prepared in a rectangular aperture of the order of 0.

A series of experiences with TissuePatch™ for alveolar air leak after pulmonary resection.

Objectives: Prolonged air leak after pulmonary resection strongly influences chest tube duration and hospitalization. This prospective study aimed to report a series of experiences with a synthetic sealant (TissuePatch™) and compare them with a combination covering method (polyglycolic acid sheet + fibrin glue) for air leaks after pulmonary surgery.

Methods: We included 51 patients (age: 20-89 years) who underwent lung resection.

Decreased postoperative complications, neuropathic pain and epidural anesthesia-free effect of uniportal video-assisted thoracoscopic anatomical lung resection: a single-center initial experience of 100 cases.

Background: We aimed to analyze perioperative complications, postoperative neuropathic pain, and the necessity of epidural anesthesia in uniportal video-assisted thoracoscopic surgery (U-VATS) compared to conventional multiportal VATS (M-VATS) for anatomical lung resection.

Methods: This retrospective study included all patients who underwent elective VATS lobectomy and segmentectomy between April 2016 and December 2019. The exclusion criteria were as follows: age ≤19 years, planned thoracotomy, re-operation in thoracic surgery, median sternotomy, robot-assisted thoracic surgery, simultaneous resection of extrathoracic organs, locally invasive lung tumor with bronchoplasty or angioplasty, past or current neuropathic pain, and a large tumor with a minimum diameter ≥5 cm.

Intraoperative methods for wrapping anastomoses after airway reconstruction: a case series.

Background: Anastomosis management is the main challenge of airway resection and reconstruction, and postoperative anastomotic complications, including ischemia, stenosis, dehiscence, and separation may lead to severe outcomes and a poor prognosis. The anastomotic buttress is vital in airway reconstruction, but the selection of surgical buttress and reinforcement remains controversial. We aimed to demonstrate and evaluate the buttress options of anastomosis, including their preoperative characteristics, the intraoperative process, and the incidence of postoperative complications to help address the controversy regarding anastomosis management.

Effectiveness and failure factors of manual aspiration using a small needle for large pneumothorax in stable patients.

Background: Manual aspiration as the initial management of a large pneumothorax in a clinically stable patient has been reported to be safe and effective. However, the effect with smaller needles, the number of aspiration, the indication other than spontaneous pneumothorax and failure factors are unknown. We assessed the effectiveness and failure risk factors of manual aspiration up to three using a 20- or 22-gauge (G) needle in patients with a large, clinically stable pneumothorax.

Advances and safe use of energy devices in lung cancer surgery.

Objectives: A clear understanding of energy devices would help achieve high effectiveness and safety and guide the selection of devices. The present review aimed to elucidate the efficacy and adverse events of energy devices in lung cancer to guide the selection of appropriate devices depending on the situation.

Methods: Four major databases were searched electronically for relevant articles published until 16 April 2021.

A simplified model for determining the cutting plane during thoracoscopic anatomical partial lobectomy of the right lower lobe.

Background: Few studies have examined the use of two-dimensional computed tomography (2D CT) and three-dimensional (3D) reconstruction images to determine the intersegmental plane (ISP) for pulmonary segmentectomy, but a systematic approach and nomenclature are currently lacking. This current study used 3D reconstruction of CT imaging to analyze variations in the right lower lobe's pulmonary ISP and created a simplified model to determine the optimum cutting plane (CP) for clinical application for operative planning and use during thoracoscopic anatomical partial lobectomy (APL).

Methods: Between January 2018 and October 2019, 325 patients with pulmonary lesions were identified who underwent thin-slice CT scans of the chest.

Adverse factors and postoperative neuropathic pain in challenging video-assisted thoracoscopic surgery.

Background: Whether challenging video-assisted thoracoscopic surgery (VATS) is a minimal invasive surgery remains controversial. This study aimed to analyze causes of challenging conventional multiple-port VATS (CVATS) and conversion to thoracotomy and postoperative pain to provide indications for VATS.

Methods: This was a two-center retrospective study.

A modeling study of generation mechanism of cell assembly to store information about hand recognition.

A specific memory is stored in a cell assembly that is activated during fear learning in mice; however, research regarding cell assemblies associated with procedural and habit learning processes is lacking. In modeling studies, simulations of the learning process for hand regard, which is a type of procedural learning, resulted in the formation of cell assemblies. However, the mechanisms through which the cell assemblies form and the information stored in these cell assemblies remain unknown.

Utility of the sliding lung sign for the prediction of preoperative intrathoracic adhesions.

Background: To assess the potential of the ultrasonographic sliding lung sign to detect severe intrathoracic adhesions before surgery.

Methods: This was a prospective, single-center, observational study including all patients aged 20-89 years undergoing elective thoracic surgery. Patients with pneumothorax, pyothorax, hemothorax, chylothorax, and hydrothorax were excluded.

Use of Quickfix for tape fixation of chest tubes: a multi-center doctor-nurse questionnaire survey and fixing strength comparison study.

Background: Several tape fixations for chest tube were proposed, although none have a clear scientific basis. We performed a multicenter survey study to investigate the fixation of chest tubes using an available adhesive tape. We evaluated the strength of tape fixation and the effect of the skin coating material used on the fixation strength.

Congenital vascular ring.

A vascular ring is a rare congenital cardiovascular anomaly, which encircles and compresses the trachea or esophagus, or both. In this review we discuss the pathophysiology, theoretical embryopathogenesis, diagnostic modalities, and surgical treatment of the different types of vascular ring. Knowledge of the normal embryonic development of the aortic arch and related structures is important for understanding and classifying the various forms of vascular ring.

A case of a pulmonary mucosa-associated lymphoid tissue lymphoma with chromosomal aberration (49, XX, +3, +i(6)(p10), +mar).

We report a case of a primary pulmonary mucosa-associated lymphoid tissue (MALT) lymphoma with chromosomal aberration (49, XX, +3, +i(6)(p10), +mar). A 59-year-old woman was referred to our hospital for an abnormal chest shadow detected during a routine health check-up in 2014. Chest computed tomography revealed a 3.

Efficacy of 50 mg pregabalin for prevention of postoperative neuropathic pain after video-assisted thoracoscopic surgery and thoracotomy: a 3-month prospective randomized controlled trial.

Background: This study analyzed the preventive effect of 50 mg/day pregabalin on postoperative neuropathic pain, and any additional benefits related to sleep and respiratory function.

Methods: This prospective randomized controlled study included lung resection patients 20-89 years of age. Patients were randomly assigned to the treatment (pregabalin; initial dose, 50 mg/day) or control (non-steroidal anti-inflammatory drugs) group.

Risk factors of neuropathic pain after thoracic surgery.

Background: This study aimed to clarify the incidence and risk factors of neuropathic pain after thoracic surgery, focusing especially on patients who underwent complete video-assisted thoracoscopic surgery (VATS).

Methods: We retrospectively identified 185 patients who underwent thoracic surgery at our hospital over a 2-year period. Logistic regression analysis was used to analyze the association of various factors with postoperative neuropathic pain.

Hand Recognition Obtained by Simulation of Hand Regard.

Eye-hand coordination of an infant is observed during the early months of their development. Hand regard, which is an example of this coordination, occurs at about 2 months. It is considered that after experiencing hand regard, an infant may recognize their own hands.

[A Retrospective Study Analyzing the Clinical Course of Patients with Non-Small Cell Lung Cancer Receiving Local or Systemic Therapy after Post-Operative Recurrence].

Background: While systemic therapy is one of the therapeutic options available for post-operative recurrence of non-small cell lung cancer, efficacy of local therapy for locoregional recurrence or limited metastatic lesions has also been reported.

Objective: We aimed to evaluate the clinical course of patients with post-operative recurrence(locoregional or limited metastatic lesion)after receiving local or systemic therapy.

Methods: Clinical data were retrospectively analyzed and survival duration was compared using the logrank test.