Maximum standardized uptake value-to-tumor size ratio in fluorodeoxyglucose F18 positron emission tomography/computed tomography: a simple prognostic parameter for non-small cell lung cancer.

Purpose: By correcting the effect of tumor size on metabolic activity, the maximum standardized uptake value-to-tumor size (SUV:tumor size) ratio on fluorodeoxyglucose F18 positron emission tomography (F-FDG PET)/computed tomography (CT) scans can be a prognostic parameter of non-small cell lung cancer (NSCLC). The current study evaluates the prognostic value of SUV:tumor size ratio on pretreatment F-FDG PET/CT scans in patients with NSCLC. Furthermore, the SUV:tumor size ratio is compared with other established PET parameters.

Nefopam as a multimodal analgesia in thoracoscopic surgery: a randomized controlled trial.

Background: Video-assisted thoracoscopic surgery (VATS) is a minimally invasive procedure. However, some patients still experience severe pain after VATS. Pain after VATS can disturb deep breathing and coughing, and can increase postoperative pulmonary complications.

Histopathologic fate of resected pulmonary pure ground glass nodule: a systematic review and meta-analysis.

Background: Pure ground glass nodules (GGNs) have been increasingly detected through lung cancer screening programs. However, there were limited reports about pathologic characteristics of pure GGN. Here we presented a meta-analysis of the histologic outcome and proportion analysis of pure GGN.

Oxidized Regenerated Cellulose versus Polyglycolic Acid for Pleural Coverage in Pneumothorax Surgery.

Although surgical intervention for spontaneous pneumothorax (SP) reduces the recurrence rate, thoracoscopic surgery is associated with greater postoperative recurrence rates than open thoracotomy. A polyglycolic acid (PGA) sheet or oxidized regenerated cellulose (ORC) mesh can therefore be used for additional coverage after thoracoscopic surgery, and this study compared the clinical impacts of these two materials. From 2018 to 2020, 262 thoracoscopic surgeries for primary SP were performed, of which 125 patients were enrolled in this study, and 48 and 77 patients received ORC and PGA coverage, respectively.

Prognosis of Spontaneous Pneumothorax/Pneumomediastinum in Coronavirus Disease 2019: The CoBiF Score.

Pneumothorax and pneumomediastinum are associated with high mortality in invasively ventilated coronavirus disease 2019 (COVID-19) patients; however, the mortality rates among non-intubated patients remain unknown. We aimed to analyze the clinical features of COVID-19-associated pneumothorax/pneumomediastinum in non-intubated patients and identify risk factors for mortality. We searched PubMed Scopus and Embase from January 2020 to December 2021.

Clinical outcomes and prognostic factors of cone-beam CT-guided radiofrequency ablation for pulmonary metastases in colorectal cancer patients.

Aim: Radiofrequency ablation (RFA) has been increasingly used for the treatment of pulmonary metastases in various malignancies.

Methods: A retrospective analysis was performed to establish the safety and efficacy of cone-beam computed tomography (CBCT)-guided RFA in patients with metastatic colorectal cancer between 2016 and 2019, and the prognostic factors of local tumor control were assessed.

Results: A total of 31 patients with colorectal cancer underwent 48 sessions of lung RFA.

Patient experience and prognostic factors of compensatory hyperhidrosis and recurrence after endoscopic thoracic sympathicotomy.

Objective: We aimed to investigate compensatory hyperhidrosis (CH) and recurrence based on an online survey of patients who underwent endoscopic thoracic sympathicotomy(ETS) for palmar and/or axillary hyperhidrosis.

Methods: We enrolled 231 patients who underwent ETS for palmar and/or axillary hyperhidrosis from January 2008 to April 2021. Patients responded to an online questionnaire regarding CH and recurrence, their electronic medical records were reviewed.

A randomized, controlled trial comparing the clinical outcomes of 3D versus 2D laparoscopic hysterectomy.

Introduction: There have been a few clinical studies on the use of three-dimensional (3D) laparoscopy with different results.

Aim: To compare the surgical outcomes of 3D versus two-dimensional (2D) laparoscopic hysterectomy for benign or premalignant gynecologic diseases.

Material And Methods: In this double-blind trial, 68 patients were randomly assigned to either the 3D or 2D groups at a 1 : 1 ratio.

Early Postoperative Pneumothorax Might Not Be 'True' Recurrence.

Objectives: To date, there is no consensual definition of what constitutes a postoperative recurrence of primary spontaneous pneumothorax (PSP), despite there being many studies reporting a high incidence of recurrence. This study aims to describe the long-term recurrence rates of pneumothorax and to suggest a possible way to differentiate recurrence events based on temporal patterns.

Methods: This single-center study retrospectively evaluated all postoperative recurrence of PSP from January 2007 to May 2019.

Three-dimensional versus two-dimensional laparoscopic myomectomy: A randomized controlled trial.

Objective: This study aimed to compare the surgical outcomes of three-dimensional (3D) and two-dimensional (2D) laparoscopic myomectomy.

Study Design: A total of 64 patients with symptomatic uterine fibroids were randomly assigned to either the 3D (n = 32) group or the 2D group (n = 32). The primary outcomes were the operative blood loss and change in hemoglobin levels.

Evaluation of ultrasound-guided erector spinae plane block for postoperative management of video-assisted thoracoscopic surgery: a prospective, randomized, controlled clinical trial.

Background: Video-assisted thoracoscopic surgery (VATS) is a commonly performed minimally invasive procedure that has led to lower levels of pain, as well as procedure-related mortality and morbidity. However, VATS requires analgesia that blocks both visceral and somatic nerve fibers for more effective pain control. This randomized controlled trial evaluated the effect of erector spinae plane block (ESPB) in the postoperative analgesia management of patients undergoing VATS.

To avoid compensatory hyperhidrosis after sympathetic surgery for craniofacial hyperhidrosis.

Background: Endoscopic thoracic sympathectomy (ETS) has not been widely adopted for treating craniofacial hyperhidrosis (CFH) due to its known postoperative complication, compensatory hyperhidrosis (CH). In this study, we evaluated whether the autonomic nerve analysis data via pre-ETS heart rate variability (HRV) test can predict post-ETS CH in patients with CFH.

Methods: From October 2017 to March 2019, we consecutively included CFH patients who underwent ETS and received preoperative HRV.

Complications after 100 sessions of cone-beam computed tomography-guided lung radiofrequency ablation: a single-center, retrospective experience.

To evaluate complications after consecutive 100 sessions of cone-beam computed tomography (CBCT)-guided radiofrequency ablation (RFA) of lung tumors A retrospective study was conducted from January 2016 and October 2018. All procedures were performed using a CBCT virtual navigation guidance system, combining three-dimentional CBCT, needle planning software, and real-time fluoroscopy. Complications were evaluated for each RFA session in 63 consecutive patients (31 male, 32 female; mean age 58.

Incidence and severity of Visually Induced motion Sickness during 3D laparoscopy In Operators who had No experience with it (VISION).

Aim: The aim of the study was to evaluate the incidence and severity of visually induced motion sickness (VIMS) during 3D laparoscopy, in operators without prior experience.

Material And Methods: Design: A retrospective comparative study (Canadian Task Force classification II-2). Setting: A university hospital.

Significance of the lobe-specific emphysema index to predict prolonged air leak after anatomical segmentectomy.

Prolonged air leak (PAL) is a major complication of pulmonary resection. Emphysema quantification with computed tomography is regarded as an important predictor of PAL for patients undergoing lobectomy. Therefore, we investigated whether this predictor might be applicable for segmentectomy.

Intramuscular stimulation as a novel alternative method of pain management after thoracic surgery.

Background: The purpose of this study was to determine whether electrical twitch-obtaining intramuscular stimulation (ETOIMS) can be an alternative to intravenous patient-controlled analgesia (IV-PCA) for postoperative pain management in pneumothorax patients undergoing single-port video-assisted thoracoscopic surgery (VATS).

Methods: This preliminary prospective randomized study was conducted between March 2017 and July 2017. A total of 26 patients undergoing single-port VATS were randomly assigned to two groups: the ETOIMS group (n=12), which received intramuscular stimulation prior to chest tube insertion toward the end of procedure, and the IV-PCA group (n=14), which received continuous infusion of fentanyl with a basal rate of 10 µg/mL/h.

Hydrogen gas inhalation ameliorates lung injury after hemorrhagic shock and resuscitation.

Background: Hemorrhagic shock and resuscitation (HSR) is known to cause inflammatory reactions in the lung parenchyma and acute lung injury, increasing the risk of complications that can lead to death. Hydrogen gas has shown to inhibit the formation and eliminate reactive oxygen species (ROS), which are known to cause reperfusion injury. Hence, the purpose of this study was to investigate the protective effect of 2% inhaled hydrogen gas on post-HSR lung injury.

Intraoperative air leak site detection in spontaneous pneumothorax through carbon dioxide insufflation during thoracoscopic surgery.

Background: Although thoracoscopic surgery is commonly performed in patients with a pneumothorax and persistent air leak, it is still difficult to identify a definite air leak site during thoracoscopic surgery. The purpose of this study was to determine the safety, efficacy, and feasibility of intraoperative air leak site detection in spontaneous pneumothorax through low-pressure carbon dioxide (CO) insufflation during thoracoscopic surgery.

Methods: Of 54 patients who underwent thoracoscopic pneumothorax operations between March 2017 and March 2018, 22 pneumothorax patients underwent surgery for a persistent air leak.

Efficacy and safety of Viscum album extract (Helixor-M) to treat malignant pleural effusion in patients with lung cancer.

Purpose: Manifestations of malignant pleural effusions (MPEs) are alleviated by local therapies as well as by systemic treatment. After 2009, when commercial use of talc was discontinued in Korea, we have used Helixor-M, which is derived from the European mistletoe (Viscum album), as an alternative sclerosing agent for pleurodesis. We aimed to evaluate the efficacy and safety of Helixor-M for controlling MPE.

Early results of new endoscopic thoracic sympathectomy for craniofacial hyperhidrosis.

Background: Endoscopic thoracic sympathectomy (ETS) has been considered as a definitive treatment for hyperhidrosis. However, despite its well-established success rate, surgical treatment for craniofacial hyperhidrosis (CFH) is rarely performed due to the possibility of fatal complications and compensatory sweating. The aim of this study was to evaluate the safety and efficacy of our newly developed method of ETS for CFH, based on early results.

Prognostic Significance of FDG Uptake of Bone Marrow on PET/CT in Patients With Non-Small-Cell Lung Cancer After Curative Surgical Resection.

Background: This study evaluated the relationship between F-fluorodeoxyglucose (FDG) uptake in bone marrow (BM) on positron emission tomography (PET)/computed tomography (CT) imaging and serum inflammatory markers and assessed the prognostic value of FDG uptake of BM in patients with non-small-cell lung cancer (NSCLC) who underwent curative surgical resection.

Patients And Methods: We retrospectively enrolled 110 NSCLC patients who underwent FDG PET/CT imaging and subsequent curative surgical resection. The maximum standardized uptake value of NSCLC (Tmax), mean FDG uptake of BM (BM SUV), and BM to liver uptake ratio (BLR) were measured.

Factors affecting patient compliance with compressive brace therapy for pectus carinatum.

Objectives: The aim of this study was to identify factors affecting patient compliance with brace therapy for pectus carinatum.

Methods: Eighty-six pectus carinatum patients who started brace therapy from August 2008 to November 2011 were included in this study. Patients were divided into two groups: patients who wore the brace for ≥6 months (compliance group) or patients who wore the brace for <6 months (non-compliance group).

Lymphatic vessel invasion and lymph node metastasis in patients with clinical stage I non-small cell lung cancer.

Background: The aim of this study was to investigate the association between the presence of lymphatic vessel invasion (LVI) in primary tumors and lymph node (LN) metastasis in clinical stage I non-small cell lung cancer (NSCLC) patients.

Materials And Methods: A total of 76 patients who underwent complete resection for clinical stage I adenocarcinoma and squamous cell carcinoma were retrospectively examined.

Results: Tumors consisted of 51 cases of adenocarcinoma and 25 cases of squamous cell carcinoma as determined by histology.

Novel in-frame deletion mutation in FLCN gene in a Korean family with recurrent primary spontaneous pneumothorax.

Birt-Hogg-Dubé syndrome (BHDS) is an autosomal dominant disease presenting with skin fibrofolliculomas, pulmonary cysts, primary spontaneous pneumothorax (PSP), and renal cancer. It is caused by germline mutations in the FLCN gene, which encodes folliculin. Here we report a novel in-frame deletion mutation p.