Prognostic Analysis of Pathological Stage I Lung Adenocarcinoma Harboring Major EGFR Mutations.

Background: While Epidermal growth factor receptor (EGFR) mutation-positive lung adenocarcinoma (LUAD) has favorable outcomes with targeted therapy, early-stage prognosis remains influenced by pathological factors and central nervous system (CNS) recurrence. The study aimed to clarify prognostic factors in pathological stage (pStage) I EGFR mutation-positive LUAD.

Methods: Between 2015 and 2018, 2,191 pStage I LUAD cases with known EGFR status (excluding EGFR testing after recurrence) who received anatomical resection were included from multiple institutions in Japan.

Rupture of the staple suture site after stapling the right inferior pulmonary vein with double rows of staples: a case report.

Background: With advancements in minimally invasive thoracic surgery techniques, such as video-assisted thoracoscopic surgery and robotic surgery, the design of vascular staplers has evolved to meet the requirements of these procedures. Consequently, newer generations of automatic staplers with improved handling and reduced size have been introduced, such as two-row staplers, which are more maneuverable and less bulky than their three-row counterparts.

Case Presentation: A 68-year-old man with lung cancer underwent a right middle and lower lobectomy due to tumor invasion into the central middle bronchial trunk, rendering the preservation of the middle lobe impossible.

Preferential superficial cortical layer activation during seizure propagation.

Objective: Focal cortical seizures travel long distances from the onset zone, but the long-distance propagation pathways are uncertain. In vitro and in vivo imaging techniques have investigated the local spread of seizures but did not elucidate long-distance spread. Furthermore, classical studies in slices suggested seizure spread locally along deep cortical layers, whereas more recent in vivo imaging studies posit a role for superficial cortical layers in local spread.

Surgical management of a huge mediastinal mature teratoma in a 2-year-old girl: a case report.

Background: Mature teratomas are benign cystic tumors that are most commonly asymptomatic. However, in some cases, mediastinal teratomas rupture the lungs and mediastinum with potentially fatal outcomes. Herein, we report a case of a large mediastinal mature teratoma that expanded to the entire left hemithorax in a child with common cold-like symptoms.

Protocol summary of a randomized phase III study: comparing systemic therapy with and without debulking surgery (primary tumour resection) for clinical stage IVA (cT1-2bN0-1M1a) non-small cell lung cancer with radiologically undetermined pleural dissemination JCOG2103 (DEBULK-LUNG).

In patients with non-small cell lung cancer (NSCLC) who present with radiologically undetermined malignant pleural dissemination or incidental surgical diagnosis of the same, surgery is generally not the preferred option; systemic therapy is favoured. However, there is no consensus on incorporating primary site resection into the treatment plan. Retrospective analyses hint at potential benefits of combining systemic therapy with primary site resection, but prospective studies have yet to confirm these findings.

Better survival with lobectomy versus sublobar resection in patients with hypermetabolic c-stage IA lung cancer on positron emission tomography/computed tomography.

Objectives: The clinical trial showed that sublobar resection was not inferior to lobectomy in terms of disease-free survival in patients with peripherally located non-small-cell lung cancer ≤2 cm. However, it is not clear whether sublobar resection is indicated for all types of c-stage IA lung cancer. The purpose of this study was to clarify whether sublobar resection is indicated for c-stage IA hypermetabolic lung cancer.

A prospective 10-year follow-up study after sublobar resection for ground-glass opacity-dominant lung cancer.

This single-arm multi-institutional prospective study aimed to evaluate the 10-year outcomes of sublobar resection for small-sized ground-glass opacity-dominant lung cancer. Among 73 patients prospectively enrolled from 13 institutions between November 2006 and April 2012, 53 ground-glass opacity-dominant lung cancer patients underwent sublobar resection with wedge resection as the first choice. The inclusion criteria were maximum tumor size of 8-20 mm; ≥ 80% ground-glass opacity ratio on high-resolution computed tomography; lower F-fluorodeoxyglucose accumulation than the mediastinum; intraoperative pathological diagnosis of adenocarcinoma in situ; and no cancer cells on intraoperative cut margins.

Asymptomatic mature intrapericardial teratoma in an adult: a case report of a rare condition.

Background: Benign mature teratomas are the most common type of anterior mediastinal germ cell tumor. Mature intrapericardial teratomas are generally diagnosed during infancy because of symptoms of cardiac compression. In contrast, mature adult intrapericardial teratomas are extremely rare, accounting for less than 1% of mature intrapericardial teratomas.

[Educational Impact of Using Three-dimentional Models for Preoperative Simulation of Segmentectomy for Medical Students].

Background: Lung segment anatomy is complex and difficult for medical students to comprehend, so education is a challenging issue. Three-dimensional (3D) models may be a more effective teaching tool for medical students. We evaluated the usefulness of 3D models in education for segmentectomy.

Salivary metabolites as potential predictive biomarkers for lung surgery complications: a retrospective cross-sectional study.

Purpose: Saliva is often used as a tool for identifying systemic diseases because of the noninvasive nature of its collection. Moreover, salivary metabolites can be potential predictive factors for postoperative survival. We conducted the present study to establish whether salivary metabolites can function as predictive biomarkers for lung surgery complications.

Efficacy of platinum-based adjuvant chemotherapy for epidermal growth factor receptor-mutant lung adenocarcinoma.

Background: The ADAURA trial reported that osimertinib improved overall survival (OS) as an adjuvant chemotherapy for pathological stage IB-IIIA epidermal growth factor receptor (EGFR) mutant lung cancer compared with a placebo. Currently, platinum-based adjuvant chemotherapy is the standard treatment for patients with or without EGFR mutations. This study aimed to evaluate the efficacy of platinum-based adjuvant chemotherapy in patient with stage II-IIIA EGFR mutant lung adenocarcinoma.

Dual-portal robotic-assisted thoracic surgery (DRATS) as a reduced port RATS: early experiences in three institutions in Japan.

Background: Robotic-assisted thoracic surgery (RATS) has gained increasing interest in recent years, with most procedures performed using the conventional multiportal approach. Uniportal RATS (URATS) approaches have recently been reported in the pursuit of minimally invasive procedures. However, URATS requires specific skills.

Clinical, Genomic, and Transcriptomic Featurses of Lung Adenocarcinoma With Uncommon EGFR Mutation.

Purpose: The purpose of this study is to identify the clinical, genomic, and transcriptomic features of patients with lung adenocarcinoma (LUAD) harboring uncommon epidermal growth factor receptor (EGFR) mutations (UCM) compared with common EGFR mutations (CM).

Materials And Methods: In this multicenter retrospective cohort study, clinicopathological data were collected from 1047 consecutive patients who underwent complete surgical resection for LUAD, as well as EGFR mutation analysis, between 2005 and 2012 at 4 institutions. Differences in postoperative overall survival (OS) and recurrence-free survival (RFS) according to EGFR mutation status were evaluated.

Development of a partnership between academia, community, and government in response to the 2022 mpox outbreak in Japan.

Objectives　In response to the steady rise in the number of cases of mpox in nonendemic countries, starting with an outbreak in the United Kingdom in May 2022, the World Health Organization declared a public health emergency of international concern on July 23, 2022. As of November 13, 2022, seven cases of mpox have been reported in Japan.Methods　A community engagement approach was applied to prevent the spread of mpox in Japan.

Learning Curve for Thoracoscopic Individual Basilar Segmentectomy: 18-Year Experience.

Background: Thoracoscopic anatomical individual basilar segmentectomy remains challenging owing to the deep intraparenchymal location of the hilar structures and anatomical variations. We analyzed and reported the experience and progress of thoracoscopic anatomical individual basilar segmentectomy at our university hospital.

Methods: We retrospectively examined the patients who underwent anatomical basilar segmentectomy at our institution from January 2004 to December 2021.

Tumor volume doubling time as a potential predictor of prognosis in clinical stage I lung squamous cell carcinoma.

Background: Tumor volume doubling time (VDT) has been shown to predict prognosis in various non-small cell lung carcinoma with scant evidence for lung squamous cell carcinoma (SCC). The purpose of this study was to investigate the prognostic value of tumor VDT in resected lung SCCs.

Methods: In this study, subjects were 51 patients who underwent lobectomy for clinical stage I SCC of the peripheral lung at our institution between January 2006 and April 2020.