Surgical resection following chemoradiotherapy for thoracic SMARCA4-deficient undifferentiated tumor: a report of two cases.

Background: Thoracic SMARCA4-deficient undifferentiated tumor (SMARCA4-UT) is a high-grade malignant neoplasm with a poor prognosis. Most cases of SMARCA4-UT have extensive chest wall and mediastinum involvement. The efficacy of surgical resection has not been clearly established.

Association between recovery from desaturation after stair climbing and postoperative complications in lung resection.

Objective: The stair-climbing test (SCT) is used as a surrogate for cardiopulmonary exercise testing, which measures maximal oxygen uptake, and considered a useful method for assessing exercise capacity in thoracic surgery. This study aims to investigate whether the recovery time of percutaneous oxygen saturation (SpO) after stair climbing is a predictor of postoperative complications after lobectomy.

Methods: We retrospectively identified 54 patients who performed SCT and underwent lobectomy between January 2015 and February 2023 at Shizuoka Cancer Center.

Prediction of Pleural Lavage Cytology According to Thin-Section Computed Tomography in Non-Small-Cell Lung Cancer.

Background: Although the positive rate of preresection pleural lavage cytology (PLC) is low, it is an important indicator of poor prognosis for non-small-cell lung cancer patients with frequent pleural dissemination (PD) recurrence. Thin-section computed tomography (TSCT) can reveal relationships between a primary tumor and the pleura at 1 to 2 mm intervals, and this is associated with visceral pleural invasion (VPI). However, its association with PLC remains unclear.

Brain Metastasis of Non-small Cell Lung Cancer After Disease-Free Survival of 5 years: Case Series and Comprehensive Literature Review.

Background: In the treatment of nonsmall cell lung cancer (NSCLC), a disease-free survival of 5 years is a criterion for cure. This study aimed to evaluate the characteristics and outcomes of patients with brain metastases of NSCLC after a disease-free survival of 5 years (late recurrent brain metastasis [LRBM]).

Methods: We reviewed 1281 consecutive patients with brain metastasis of lung cancer at a single institute between November 2014 and December 2022.

Long term outcomes beyond 5 years after pulmonary resection for non-small-cell lung cancer.

Objectives: We investigated the incidence of late recurrence beyond 5 years after pulmonary resection and aimed to identify candidates for long-term surveillance.

Methods: We retrospectively reviewed the medical records of 978 non-small-cell lung cancer patients who underwent pulmonary resection between 2002 and 2015 and survived without recurrence for 5 years. Clinicopathological factors associated with recurrence-free survival beyond 5 years after surgery were investigated using univariate and multivariate analyses.

Diagnostic sensitivity of solid volume measurement for pathological invasion in non-solid lung adenocarcinoma.

Background: In the current tumor-node-metastasis (TNM) classification, the clinical T descriptor is defined by solid size (SS) on a computed tomography (CT) slice and the pathological one is done by invasive size (IS) in microscopic evaluations. We sometimes experience discrepancies in diagnosis of both descriptors. A volume analyzing application enables semi-automatic measurement of three-dimensional (3D) parameters in cases where there are discrepancies in diagnosing tumors' solid size and IS.

The efficacy of a machine learning algorithm for assessing tumour components as a prognostic marker of surgically resected stage IA lung adenocarcinoma.

Background: The importance of the stromal components in tumour progression has been discussed widely, but their prognostic role in small size tumours with lepidic components is not fully understood. Applying digital tissue image analysis to whole-slide imaging may enhance the accuracy and reproducibility of pathological assessment. This study aimed to evaluate the prognostic value of tumour components of lung adenocarcinoma by measuring the dimensions of the tumour consisting elements separately, using a machine learning algorithm.

Prognostic impact of examined mediastinal lymph node count in clinical N0 non-small cell lung cancer.

Objectives: The number of examined mediastinal lymph nodes (mLNs) could represent the quality of mediastinal lymphadenectomy for non-small cell lung cancer (NSCLC). This study aimed to evaluate the prognostic impact of the number of examined individual mLNs in patients with resectable NSCLC.

Methods: We retrospectively evaluated 1420 patients with clinical stage IA-IIB, N0 NSCLC who underwent complete resection by lobectomy, which involved hilar and mLN dissection, between 2008 and 2016.

Lobe-specific nodal dissection with intraoperative frozen section analysis for clinical stage-I non-small cell lung cancer: a validation study by propensity score matching.

Objective: Lobe-specific nodal dissection (LND) is increasingly used for non-small cell lung cancer (NSCLC) in Japan; however, its treatment validity remains unclarified. Since 2013, LND has been used as a standard procedure for clinical stage-I (c-stage-I) NSCLC at our institution. We aimed to evaluate its validity using intraoperative frozen section analysis (FSA) for c-stage-I NSCLC.

Mediastinal lymph node dissection for the elderly with clinical stage I non-small cell lung cancer.

Objectives: We aimed to compare the differences in prognosis and perioperative complications between patients with and without mediastinal lymph node dissection (MLND) among elderly patients with clinical stage I non-small cell lung cancer (NSCLC).

Methods: We analysed 439 patients ≥ 75 years of age with NSCLC classified as clinical stage I who underwent complete resection with lobectomy. We divided the patients into two groups.

Pathological features and prognostic implications of ground-glass opacity components on computed tomography for clinical stage I lung adenocarcinoma.

Purpose: To investigate the prognostic implications and pathological features of clinical stage I lung adenocarcinoma with ground-glass opacity (GGO) on computed tomography (CT).

Methods: The subjects of this retrospective study were 1228 patients with lung adenocarcinoma classified as clinical stage I, who underwent complete resection by lobectomy. The patients were divided into four groups based on the presence and proportion of GGO according to the consolidation-to-tumor ratio (CTR); A, CTR ≤ 0.

Continuation of aspirin perioperatively for lung resection: a propensity matched analysis.

Purpose: To clarify the safety and effectiveness of continuing aspirin during the perioperative period of lung resection.

Methods: We analyzed, retrospectively, consecutive patients who underwent lung resection between 2008 and 2017. To investigate the safety of aspirin continuation, patients who continued taking aspirin perioperatively (Group C) were matched to other patients (Group O), using a propensity score, and bleeding outcomes were compared.

Association between the mutational smoking signature and the immune microenvironment in lung adenocarcinoma.

Objectives: Mutational signatures associated with tobacco smoking (mutational smoking signatures: SS) are characterized mainly by C > A mutations. The aim of this study was to characterize the association between the tumor immune microenvironment and the SS in lung adenocarcinoma.

Methods: Lung adenocarcinomas surgically resected from 96 patients, for which whole exome sequencing data was available, were included in the study.

Growth patterns of small peripheral squamous cell carcinoma of the lung and their impacts on pathological and biological characteristics of tumor cells.

Purpose: The growth pattern of peripheral squamous cell carcinoma (SCC) of the lung is divided into two types: alveolar space-filling (ASF) growth and alveolar space-destructive (ASD) growth. The aim of this study was to investigate the clinicopathological differences between cancer cells displaying ASF and ASD growth.

Methods: We analyzed 155 patients with peripheral SCC measuring 30 mm or less in diameter.

Prognostic Impact of the Number of Metastatic Lymph Nodes on the Eighth Edition of the TNM Classification of NSCLC.

Introduction: Current nodal staging of NSCLC is defined only by anatomical location of lymph nodes (LNs). The aim of this study is to investigate prognostic impacts of the number of metastatic LNs by stratifying the present N classification.

Methods: We analyzed 1989 patients with NSCLC who underwent complete resection by lobectomy or pneumonectomy involving dissection of the hilar and mediastinal LNs from 2003 to 2012.

Ground-Glass Opacity Is a Strong Prognosticator for Pathologic Stage IA Lung Adenocarcinoma.

Background: A ground-glass opacity (GGO) component on chest computed tomography (CT) pathologically corresponds to lepidic adenocarcinoma. However, the precise correspondence relation and the prognostic significance remains unclear in patients with pathologic stage IA lung adenocarcinoma.

Methods: We retrospectively reviewed the clinicopathologic features of 809 consecutive patients with pathologic stage IA lung adenocarcinoma who underwent complete resection between 2003 and 2014.

Radiologic Criteria in Predicting Pathologic Less Invasive Lung Cancer According to TNM 8th Edition.

Purpose: The Japan Clinical Oncology Group Study 0201 has proposed radiologic criteria on thin-slice computed tomography to diagnose pathologic less invasive lung adenocarcinoma that could be a candidate for sublobar resection based on the previous tumor, node, metastasis classification system (TNM). The aim of this study was to propose the new radiologic criteria for predicting pathologic less invasive cancer according to the 8th edition TNM.

Patients And Methods: We analyzed 744 patients who had peripheral clinical Tis-T1cN0M0 non-small-cell lung cancer of 3 cm or less and underwent complete resection by lobectomy from 2003 to 2011.

Differences of tumor microenvironment between stage I lepidic-positive and lepidic-negative lung adenocarcinomas.

Objective: Lepidic growth is a noninvasive component of lung adenocarcinoma. Many adenocarcinoma cases contain coexistent lepidic and nonlepidic (invasive) components (lepidic-growth positive [Lep+] adenocarcinoma); however, some cases comprise only nonlepidic components (lepidic-growth negative [Lep-] adenocarcinoma). The aim of this study was to investigate the biological differences between the invasive components of Lep+ and Lep- adenocarcinoma.

Influence of Ground Glass Opacity and the Corresponding Pathological Findings on Survival in Patients with Clinical Stage I Non-Small Cell Lung Cancer.

Introduction: The aim was to clarify the influence on patient prognosis of ground glass opacity (GGO) component in each new TNM stage and propose grouping reflecting the prognosis more accurately.

Methods: We examined the data on 1290 patients who underwent lung cancer resection from 2003 to 2011. The demographics and overall survival of patients with adenocarcinoma with and without GGO, squamous cell carcinoma, and the others were compared according to clinical stage from 0 to IB.

Clinical and Pathological Staging Validation in the Eighth Edition of the TNM Classification for Lung Cancer: Correlation between Solid Size on Thin-Section Computed Tomography and Invasive Size in Pathological Findings in the New T Classification.

Introduction: The aim of this study was to validate the new eighth edition of the TNM classification and to elucidate whether radiological solid size corresponds to pathological invasive size incorporated in this T factor.

Methods: We analyzed the data on 1792 patients who underwent complete resection from 2003 to 2011 at the National Cancer Center Hospital East, Japan. We reevaluated preoperative thin-section computed tomography (TSCT) to determine solid size and pathological invasive size using the fourth edition of the WHO classification and reclassified them according to the new TNM classification.

Long-term survival outcome after postoperative recurrence of non-small-cell lung cancer: who is 'cured' from postoperative recurrence?

Objectives: Since survival after postoperative non-small-cell lung cancer (NSCLC) recurrence is extremely poor, the long-term post-recurrence outcomes are not well understood. The purpose of this study was to evaluate the long-term post-recurrence outcomes and clarify who are possibly 'cured' in recent clinical practice.

Methods: We reviewed the medical records of 635 patients who developed postoperative recurrence until 2012 after R0 resection for pathological Stage IA-IIIA NSCLC between 1993 and 2006.

Supramolecular Photochirogenesis with a Higher-Order Complex: Highly Accelerated Exclusively Head-to-Head Photocyclodimerization of 2-Anthracenecarboxylic Acid via 2:2 Complexation with Prolinol.

An unprecedented 2:2 complex was shown to intervene in the enantiodifferentiating photocyclodimerization of 2-anthracenecarboxylic acid (A) mediated by a hydrogen-bonding template l-prolinol (P) to accelerate the formation of chiral anti-head-to-head and achiral syn-head-to-head cyclodimers in >99% combined yield with enhanced enantioselectivities of up to 72% ee for the former. The supramolecular complexation and photochirogenic behaviors, as well as the plausible structures, of intervening Am·Pn complexes (m, n = 1 or 2) were elucidated by combined theoretical and experimental spectroscopic, photophysical, and photochemical studies. Furthermore, the photochemical chiral amplification was achieved for the first time by utilizing the preferential 2:2 complexation of A with homochiral P to give normalized product enantioselectivities higher than those of the template used.