Lung Cancer Surgery Research Articles

The Relationship Between Facilitation of Patient Involvement and Self-Perceived Burden in Postoperative Lung Cancer Patients: The Mediating Role of Social Support.

Patients with lung cancer often experience a high level of self-perceived burden, which significantly affects their quality of life and psychological health. Social support is closely related to the self-perceived burden, yet there is scant research on the relationship between social support, facilitation of patient involvement, and self-perceived burden. This study aims to understand the current situation of self-perceived burden in postoperative lung cancer patients and to explore the mediating role of social support between facilitation of patient involvement and self-perceived burden. A cross-sectional design was used in this study. Using a convenience sampling method, a total of 331 lung cancer patients who were hospitalized for surgical treatment at a tertiary cancer hospital in Beijing, China, from August 2022 to May 2023, were selected to participate in this survey. The survey included a self-designed sociodemographic questionnaire, the Facilitation of Patient Involvement Scale (FPIS), the Perceived Social Support Scale (PSSS), and the Self-Perceived Burden Scale (SPBS). Data were analyzed using SPSS 24.0 for statistical description and Pearson correlation analysis, while AMOS 24.0 was utilized to construct a structural equation model to examine the mediation effect. The score of self-perceived burden in lung cancer patients was 26.42 ±8.23 points. Bot facilitation of patient involvement and social support was negatively correlated with self-perceived burden (r = -0.313, r = -0.332, P < 0.001). Social support plays a partially mediated role in the relationship between facilitation of patient involvement and self-perceived burden, accounting for 44.3% of the total effect. The self-perceived burden of patients after lung cancer surgery was at a moderate level, and social support partially mediates the relationship between facilitation of patient involvement and self-perceived burden. Medical staffshould encourage patient participation in their own treatment decisions and alleviate the burden associated with lung cancer and surgical treatment by enhancing their social support.

Investigation of Exercise Interventions on Postoperative Recovery in Lung Cancer Patients: A Qualitative Study Using Web Crawling Technology.

Rapid recovery after lung cancer surgery is challenging. Exercise is a low-cost, effective method to expedite recovery. Despite numerous exercise interventions, many fail to consider patient perspectives, leading to low adherence and short-term effects. Understanding lung cancer patients' perspectives on postoperative exercise and exploring their exercise-related concerns and needs are crucial for enhancing the effectiveness of exercise-based rehabilitation programs. This study aims to analyze lung cancer patients' perspectives on postoperative exercise in their daily lives, exploring their concerns and needs related to postoperative exercise to help healthcare professionals develop personalized exercise plans. An internet crawling technique collected online inquiries from Baidu webpages about postoperative physical activity in lung cancer patients, using "lung cancer", "surgery", and"exercise" as keywords. The data was encoded, categorized, and analyzed using a large-scale semantic analysis platform in natural language processing and information retrieval to examine term frequency, sentiment tendencies, and attributes in the inquiry texts. Initially, 2727 queries were retrieved; after screening, deduplication, and cleansing, 201 unique queries were identified. Queries related to "modes of exercise" constituted the largest proportion. The most frequently occurring words in the word frequency analysis were "lung", "cancer", "should", "can", "long", "early", and "surgery", "exercise", "respiratory". Postoperative lung cancer patients demonstrate significant interest in whether they should engage in exercise, as well as in the appropriate types and duration of such activities, indicating a strong need for detailed guidance and knowledge related to exercise. The sentiment analysis showed a positive score of 87.5% and a negative score of 12.5%, indicating that postoperative lung cancer patients view exercise positively and have an enthusiastic attitude towards it. Among the positive sentiment attributes, "good" was the most frequently mentioned term, whereas "bad" and "surprising" were the most prevalent terms within the negative sentiment attributes. Postoperative physical activity receives limited attention from lung cancer patients, who emphasize their preferences for exercise modalities. Their inquiries often reflect psychological concerns, such as fear and helplessness caused by symptoms. Understanding patients' perspectives on postoperative physical activity within their real-life contexts can help integrate psychological support into exercise plans. This integration could guide healthcare professionals in developing more personalized postoperative exercise regimens for lung cancer patients.

Assessment of printed lung cancer surgery patient education materials in the United States

ObjectiveWell-designed patient education materials (PEMs) increase health literacy, which has been linked to better surgical patient outcomes. The quality of lung cancer surgery PEMs is unknown, however. Here we assessed printed lung cancer surgery PEMs for readability, understandability, actionability, and accessibility. MethodsVarious lung cancer programs throughout the United States were contacted for their lung cancer surgery PEMs. The readability of the received materials was calculated using 6 readability tests. Four thoracic surgeon–advanced practice practitioner dyads scored the PEMs for understandability, actionability, and accessibility using the Patient Education Material Assessment Tool and the Accessibility Assessment Tool, with the recommended minimum threshold of 70%. One-sample t tests were performed to compare each parameter against its recommended threshold. ResultsOut of 34 institutions contacted, 18 (52.9%) provided PEMs. The average reading level of the PEMs ranged from 7th grade to 11th grade, significantly exceeding the recommended 6th grade health literacy threshold (P < .01). Although mean understandability (73.7 ± 13.2%) and actionability (70.2 ± 17.8%) scores were not significantly different from the minimum threshold, and the mean accessibility score (81.8 ± 13.5%) was significantly higher than the threshold (P < .05), there was wide variation in the scores. Most PEMs scored well in organization and writing but lacked other features that can enhance patient understanding, such as visual aids and summaries. ConclusionsPEMs are written at reading levels that are too advanced for patients. Although PEMs scored well in understandability, actionability, and accessibility, analysis of individual items revealed the need for improvement, including the use of shorter sentences, more visual aids and summaries, and expansion of language translations.

Clinical analysis of progressive destroyed lung after lung cancer surgery.

"Progressive destroyed lung (PDL)" refers to a state in which the normal structure and function of the lung are permanently disrupted owing to repeated inflammation. After lung cancer surgery, the remaining lung tissue can experience progressive destruction; however, the exact cause remains unclear. In this study, we retrospectively analyzed cases in which the remaining lung deteriorated after lung cancer surgery and investigated the associated risk factors. A case-control study was conducted on 31 cases of PDL and 247 cases of non-PDL among 1,234 patients who underwent surgery for primary lung cancer from 2006 to 2021. The following factors were analyzed: age, sex, medical history, smoking status, surgical procedure, lung cancer histology, surgical approach, postoperative complications, chemotherapy, radiation therapy, and lung cancer recurrence. Patients were matched 1:1 based on preoperative factors, and postoperative risk factors were evaluated using multivariate logistic regression analysis. A higher proportion of men and higher prevalence of chronic lung diseases, smokers, squamous cell carcinoma (SCC), postoperative acute pneumonia, chronic pneumonia, air leak, and history of radiation therapy were noted in the PDL group than in the non-PDL group. In the analysis following propensity score matching, chronic pneumonia [odds ratio (OR): 10.1, 95% confidence interval (CI): 2.9 to 35.8] was identified as an independent risk factor for PDL. In this study, PDL after lung cancer surgery was associated with postoperative chronic pneumonia, including Aspergillus infection and aspiration pneumonia.

Early Postoperative Patient-Reported Outcomes of Sarcopenia Versus Nonsarcopenia in Patients Undergoing Video-Assisted Thoracoscopic Surgery for Lung Cancer.

To compare early postoperative patient-reported outcomes between sarcopenic and nonsarcopenic patients undergoing video-assisted thoracoscopic surgery (VATS) for lung cancer. The data used in this study were acquired from a longitudinal prospective study (CN-PRO-Lung 1) between November 2017 and January 2020. Skeletal muscle index was measured at L3 vertebral level on preoperative computed tomography to identify sarcopenia based on an established threshold. Symptoms severity and status of functional impairments were reported as proportions of patients with clinically relevant moderate-to-severe scores on 0-10 scales, which were measured by using the MD Anderson Symptom Inventory-Lung Cancer at baseline, daily postoperative hospitalization, and weekly after discharge up to 4 weeks. Symptom severity, functional status, and postoperative clinical outcomes were compared between the sarcopenia and nonsarcopenia groups. This study included 125 patients undergoing VATS for lung cancer. Sarcopenia was identified in 34 (27.2%) patients. Sarcopenic patients reported more moderate-to-severe pain (P = 0.002) at discharge and more moderate-to-severe fatigue (P = 0.027) during the 4 weeks after discharge. Besides, sarcopenic patients had a longer recovery time from both pain (P = 0.002) and fatigue (P = 0.007) than nonsarcopenic patients. Meanwhile, no significant between-group difference was found in the postoperative clinical outcomes (all P > 0.05). Sarcopenic patients undergoing VATS for lung cancer may have more pain and fatigue, as well as longer symptoms recovery time than nonsarcopenic patients during the early postoperative period.

Enhanced tumor targeting and penetration of fluorophores via iRGD peptide conjugation: a strategy for the precision targeting of lung cancer.

Accurate real-time tumor delineation is essential for achieving curative resection (R0 resection) during non-small cell lung cancer (NSCLC) surgery. The unique characteristics of lung tissue structure significantly challenge the use of video-assisted thoracoscopic surgery in the identification of lung nodules. This difficulty often results in an inability to discern the margins of lung nodules, necessitating either an expansion of the resection scope, or a transition to open surgery. Due to its high spatial resolution, ease of operation, and capacity for real-time observation, near-infrared fluorescence (NIRF) navigation in oncological surgery has emerged as a focal point of clinical research. Targeted NIRF probes, which accumulate preferentially in tumor tissues and are rapidly cleared from normal tissues, enhance diagnostic sensitivity and surgical outcomes. The imaging effect of the clinically approved NIRF probe indocyanine green (ICG) varies significantly from person to person. Therefore, we hope to develop a new generation of targeted NIRF probes targeting lung tumor-specific targets. First, the peptide iRGD (sequence: CRGDKGPDC) fluorescent tracer was synthesized, and characterized through mass spectrometry (MS), proton nuclear magnetic resonance (1H NMR), and high-performance liquid chromatography (HPLC). Fluorescence properties were tested subsequently. Safety was performed in vitro using both human normal liver cells and human normal breast cells. Second, Metabolism and optimal imaging time were determined by tail vein injection of iRGD fluorescent tracer. Finally, Orthotopic and metastatic lung tumor models were used to evaluate the targeting properties of the iRGD fluorescent tracer. We successfully synthesized an iRGD fluorescent tracer specifically designed to target NSCLC. The molecular docking analyses indicated that this tracer has receptor affinity comparable to that of iRGD for αvβ3 integrin, with a purity ≥98%. Additionally, the tracer is highly soluble in water, and its excitation and emission wavelengths are 767 and 799 nm, respectively, positioning it within the near-infrared spectrum. The cellular assays confirmed the tracer's minimal cytotoxicity, underscoring its excellent biosafety profile. In vivo studies further validated the tracer's capacity for specific NSCLC detection at the cellular level, alongside a prolonged imaging window of 6 days or more. Notably, the tracer demonstrated superior specificity in localizing very small lung nodules, which are otherwise clinically indiscernible, outperforming non-targeted ICG. Fluorescence intensity analyses across various organs revealed that the tracer is predominantly metabolized by the liver and kidneys, with excretion via bile and urine, and exhibits minimal toxicity to these organs as well as the lungs. The iRGD fluorescent tracer selectively accumulates in NSCLC tissues by specifically targeting αvβ3 receptors, which are overexpressed on the surface of tumor cells. This targeted approach facilitates the real-time intraoperative localization of NSCLC, presenting an improved strategy for intraoperative tumor identification with significant potential for clinical application.

Using an organizational change model to improve lung cancer surgery services over five years.

Lung cancer is the most common cause of cancer death in the UK resulting in 21% of all cancer deaths. In 2016, local lung cancer surgery services required improvement due to under-representation in cancer resections and resource scarcity during the pandemic, which affected critical care bed availability and extended postoperative stays. The aim of this service improvement was to increase the number of lung cancer resection; develop minimally invasive techniques and reduce the use of Critical Care Unit beds by 35% (a subsequent goal). A five-year plan, guided by Kotter's 8-step change model, was initiated to address these issues. This model promotes sustainable change by setting clear goals, effective communication, and stakeholder involvement. Initial changes included hiring a thoracic surgeon experienced in uniportal video assisted thoracoscopy and enhanced recovery protocols. The team grew to three thoracic surgeons by 2020. The service increased operating theatre days and adopted new postoperative practices to reduce complications and hospital stays. Lung Cancer Multidisciplinary Team Meetings were consistently covered by thoracic surgeons, ensuring comprehensive care. Data on surgical activity were collected from departmental databases and national audits, with internal audits conducted regularly. Statistical significance was tested using chi-square tests with P values <0.05. The number of surgical procedures more than doubled, with primary lung cancer resections increasing nearly three-fold from 12.8% to 29.8% over six years. Postoperative complications and mortality rates remained low. Critical care bed usage dropped significantly during the pandemic, with new protocols enabling safe recovery in general surgical areas. The successful expansion of thoracic surgical services was attributed to the dedicated minimally invasive surgeons, enhanced recovery measures, and skilled staff. The change model facilitated efficient and dynamic progress. With the introduction of lung cancer screening programs, the demand for surgical services is expected to rise. The effective change model will be re-applied to meet this demand. The organizational change model, focused on patients and staff, achieved sustained quality improvement in lung cancer care despite challenging conditions like the coronavirus disease 2019 pandemic.

Prophylactic effect of tissue flap in the prevention of bronchopleural fistula after surgery for lung cancer.

Bronchopleural fistula (BPF) is a serious complication of lung resection. To avoid BPF, the bronchial stump/anastomotic site is often covered with a flap of surrounding tissue. One risk factor for BPF is radical lung resection after induction chemoradiotherapy for lung cancer. We retrospectively reviewed our database to elucidate the characteristics of tissue flaps that prevent BPF. This retrospective study included 152 patients treated between 1999 and 2019. We examined the clinicopathological characteristics, including the type and thickness of the tissue flap used to cover the bronchial stump/anastomotic site, and postoperative complications, including BPF. BPF occurred in 5 patients (3.3%). All 5 patients had complications that could have affected delayed wound healing, such as pneumonia. The covering tissue flap thickness was significantly greater in patients without BPF than in those who developed BPF (p = 0.0290). Additionally, the tissue flap thickness was significantly greater than in those with BPF (p = 0.0077), even in high-risk patients who developed pneumonia or radiation pneumonitis on the operative side within 6months postoperatively. Perioperative management is crucial to avoid complications affecting the healing of the bronchial stump/anastomotic site, and the covering tissue flap thickness may be an important factor in avoiding or minimizing BPF.

The predictive value of coronary computed tomography angiography-derived fractional flow reserve for perioperative cardiac events in lung cancer surgery.

As a non-invasive coronary functional examination, coronary computed tomography angiography (CCTA)-derived fractional flow reserve (CT-FFR) showed predictive value in several non-cardiac surgeries. This study aimed to evaluate the predictive value of CT-FFR in lung cancer surgery. We retrospectively collected 227 patients from January 2017 to June 2022 and used machine learning-based CT-FFR to evaluate the stable coronary artery disease (CAD) patients undergoing lung cancer surgery. The major adverse cardiac event (MACE) was defined as perioperative myocardial injury (PMI), myocardial infarction, heart failure, atrial and ventricular arrhythmia with hemodynamic disorder, cardiogenic shock and cardiac death. The multivariate logistic regression analysis was performed to identify risk factors for MACE and PMI. The discriminative capacity, goodness-of-fit, and reclassification improvement of prediction model were determined before and after the addition of CT-FFR≤0.8. The incidence of MACE was 20.7% and PMI was 15.9%. CT-FFR significantly outperformed CCTA in terms of accuracy for predicting MACE (0.737 vs 0.524). In the multivariate regression analysis, CT-FFR≤0.8 was an independent risk factor for both MACE [OR=10.77 (4.637, 25.016), P<0.001] and PMI [OR=8.255 (3.372, 20.207), P<0.001]. Additionally, we found that the performance of prediction model for both MACE and PMI improved after the addition of CT-FFR. CT-FFR can be used to assess the risk of perioperative MACE and PMI in patients with stable CAD undergoing lung cancer surgery. It adds prognostic information in the cardiac evaluation of patients undergoing lung cancer surgery.

Prognostic Impact and Clinical Features of Spread through Air Spaces in Operated Lung Cancer: Real-World Analysis.

Background and Objectives: Lung cancer is the leading cause of cancer-related deaths. Spread through air spaces (STAS) is an adverse prognostic factor that has become increasingly known in recent years. This study aims to investigate the impact of STAS presence on overall survival (OS) and disease-free survival (DFS) in patients with surgically resected stage IA-IIIA lung cancer and to identify clinicopathological features associated with STAS. Materials and Methods: This research involved 311 lung cancer surgery patients. The relationship between the presence of STAS in the patients' surgical pathology and OS and DFS values was examined. Clinicopathological features associated with the presence of STAS were determined. Results: There were 103 (33%) STAS-positive patients. Adenocarcinoma histological subtype, perineural invasion (PNI), and lymphovascular invasion (LVI) were significantly correlated with being STAS positive. STAS significantly predicted DFS and OS. One-year and five-year DFS rates were significantly lower in the STAS-positive group compared to the STAS-negative group (65% vs. 88%, 29% vs. 62%, respectively, p ≤ 0.001). Similarly, one-year and five-year OS rates were significantly lower in the STAS-positive group compared to the STAS-negative group (92% vs. 94%, 54% vs. 88%, respectively, p ≤ 0.001). In multivariate analysis, STAS was found to be an independent prognostic factor for both DFS and OS (HR: 3.2 (95%CI: 2.1-4.8) and 3.1 (95%CI: 1.7-5.5), p < 0.001 and <0.001, respectively). Conclusions: In our study, STAS was found to be an independent prognostic biomarker in operated stage IA-IIIA lung cancer patients. It may be a beneficial pathological biomarker in predicting the survival of patients and managing their treatments.

Active thymus in adult with lung cancer: preliminary results from the Adult Thymic Project.

Thymus is considered a non-functional remnant in adults, but some evidence suggest that it may harbor residual activity. Lung cancer patients represent the ideal model to study thymic residual activity, as their thymus can be easily harvested during surgery. This study was designed to confirm the presence of residual thymic activity both in adult mice (step 1) and in humans (step 2). In step 1, lung cancer was induced by activating k-ras mutation in a cohort of 20 young and adult mice. After killing, thymus and lungs were analyzed. Thymus was considered active when medullary was evident, cortico-medullary ratio was 50:50 or higher and adipose involution was present. In step 2, a cohort of 20 patients, undergoing surgery for lung cancer, had biopsy of pericardial fat pad, site of ectopic thymus. Thymus was considered present if Hassall's bodies were detected. In mice, active thymus was detected in a high proportion of cases, without significant difference between adult and young (70% vs 44.4% respectively). Two cases without evidence of lung tumor had a fully functional thymus. In humans, ectopic thymus was detected in the pericardial fat pad in 2 cases (10.5%), confirmed by immunohistochemistry. Signs of previous thymic activity were detected in 8 additional patients. Results confirmed thymus activity in animal models and humans with lung cancer, providing the rationale for future systematic mediastinal thymic biopsy. The comprehension of interactions between thymus, lymphocytes and tumor may open a new potentially targetable perspective in lung cancer.

Case Series of Tracheal Cancer Subsequent to Primary Lung Cancer Surgery

Case Series of Tracheal Cancer Subsequent to Primary Lung Cancer Surgery

Risk prediction of multiple-station N2 metastasis in patients with upfront surgery for clinical single-station N2 non-small cell lung cancer

To investigate long-term outcomes and develop a risk model for pathological multi–station N2 (pN2b) in patients who underwent upfront surgery for clinical single–station N2 (cN2a) non–small cell lung cancer (NSCLC). From 2006 to 2018, 547 patients who had upfront surgery for suspected cN2a NSCLC underwent analysis. A risk model for predicting pN2b metastasis was developed using preoperative clinical variables via multivariable logistic analysis. Among 547 clinical cN2a NSCLC patients, 118 (21.6%), 58 (10.6%), and 371 (67.8%) had pN0, pN1, and pN2. Among 371 pN2 NSCLC patients, 77 (20.8%), 165 (44.5%), and 129 (34.7%) had pN2a1, pN2a2, and pN2b. The 5-year overall survival rates for pN2a1 and pN2a2 were significantly higher than for pN2b (p = 0.041). Histologic type (p < 0.001), age ≤ 50 years (p < 0.001), preoperatively confirmed N2 metastasis (p < 0.001), and clinical stage IIIB (vs. IIIA) (p = 0.003) were independent risk factors for pN2b metastasis. The risk scoring system based on this model demonstrated good discriminant ability for pN2b disease (area under receiver operating characteristic: 0.779). In cN2a NSCLC patients, those with multiple N2 metastases indicate worse prognosis than those with a single N2 metastasis. Our risk scoring system effectively predicts pN2b in these patients.

Comparative effectiveness of perioperative physical activity in older adults with lung cancer and their family caregivers: design of a multicenter pragmatic randomized trial

BackgroundWith a median age at diagnosis of 70, lung cancer remains a significant public health challenge for older Americans. Surgery is a key component in treating most patients with non-metastatic lung cancer. These patients experience postoperative pain, fatigue, loss of respiratory capacity, and decreased physical function. Data on quality of life (QOL) in older adults undergoing lung cancer surgery is limited, and few interventions are designed to target the needs of older adults and their family caregivers (FCGs). The primary aim of this comparative effectiveness trial is to determine whether telephone-based physical activity coaching before and after surgery will be more beneficial than physical activity self-monitoring alone for older adults and their FCGs.MethodsIn this multicenter comparative effectiveness trial, 382 older adults (≥ 65 years) with lung cancer and their FCGs will be recruited before surgery and randomized to either telephone-based physical activity coaching or physical activity self-monitoring alone. Participants allocated to the telephone-based coaching comparator will receive five telephone sessions with coaches (1 pre and 4 post surgery), an intervention resource manual, and a wristband pedometer. Participants in the self-monitoring only arm will receive American Society of Clinical Oncology (ASCO) physical activity information and wristband pedometers. All participants will be assessed at before surgery (baseline), at discharge, and at days 30, 60, and 180 post-discharge. The primary endpoint is the 6-minute walk test (6MWT) at 30 days post-discharge. Geriatric assessment, lower extremity function, self-reported physical function, self-efficacy, and QOL will also be assessed.DiscussionThe trial will determine whether this telephone-based physical activity coaching approach can enhance postoperative functional capacity and QOL outcomes for older adults with lung cancer and their FCGs. Trial results will provide critical findings to inform models of postoperative care for older adults with cancer and their FCGs.Trial RegistrationClinicalTrials.gov Identifier: NCT06196008.

Accuracy of thoracic nerves recognition for surgical support system using artificial intelligence

We developed a surgical support system that visualises important microanatomies using artificial intelligence (AI). This study evaluated its accuracy in recognising the thoracic nerves during lung cancer surgery. Recognition models were created with deep learning using images precisely annotated for nerves. Computational evaluation was performed using the Dice index and the Jaccard index. Four general thoracic surgeons evaluated the accuracy of nerve recognition. Further, the differences in time lag, image quality and smoothness of movement between the AI system and surgical monitor were assessed. Ratings were made using a five-point scale. The computational evaluation was relatively favourable, with a Dice index of 0.56 and a Jaccard index of 0.39. The AI system was used for 10 thoracoscopic surgeries for lung cancer. The accuracy of thoracic nerve recognition was satisfactory, with a recall score of 4.5 ± 0.4 and a precision score of 4.0 ± 0.9. Though smoothness of motion (3.2 ± 0.4) differed slightly, nearly no difference in time lag (4.9 ± 0.3) and image quality (4.6 ± 0.5) between the AI system and the surgical monitor were observed. In conclusion, the AI surgical support system has a satisfactory accuracy in recognising the thoracic nerves.

Construction of a nomogram model based on biomarkers for liver metastasis in non-small cell lung cancer.

Patients with non-small cell lung cancer (NSCLC) with liver metastasis have a poor prognosis, and there are no reliable biomarkers for predicting disease progression. Currently, no recognized and reliable prediction model exists to anticipate liver metastasis in NSCLC, nor have the risk factors influencing its onset time been thoroughly explored. This study conducted a retrospective analysis of 434 NSCLC patients from two hospitals to assess the association between the risk and timing of liver metastasis, as well as several variables. The patients were divided into two groups: those without liver metastasis and those with liver metastasis. We constructed a nomogram model for predicting liver metastasis in NSCLC, incorporating elements such as T stage, N stage, M stage, lack of past radical lung cancer surgery, and programmed death ligand 1 (PD-L1) levels. Furthermore, NSCLC patients with wild-type EGFR, no prior therapy with tyrosine kinase inhibitors (TKIs), and no prior radical lung cancer surgery showed an elevated risk of early liver metastasis. In conclusion, the nomogram model developed in this study has the potential to become a simple, intuitive, and customizable clinical tool for assessing the risk of liver metastasis in NSCLC patients following validation. Furthermore, it provides a framework for investigating the timing of metachronous liver metastasis.

Simultaneous thoracoscopic surgery in patients with atrial fibrillation and early-stage lung cancer

ObjectivesAtrial fibrillation (AF) and early-stage lung cancer can both be treated under thoracoscopy. This study aims to evaluate the feasibility and safety of simultaneous thoracoscopic surgery for atrial fibrillation and early-stage lung cancer. MethodsThis was a single-center, retrospective study of 865 patients with paroxysmal or non-paroxysmal AF who underwent surgical ablation between October 2014 and December 2021. Patients were divided into two groups according to whether they have undergone simultaneous thoracoscopic early-stage lung cancer surgery and resulting in 24 pairs of patients. ResultsIn total, 48 patients (24 matched pairs) were analyzed. The age was 63.71 ± 8.43 years. Procedure time and postoperative mechanical ventilation time were significantly lower in the group AF than group AFLC (Atrial fibrillation and lung cancer) (140.38 ± 27.53 vs. 230.79 ± 59.06 min, P<0.001; 5 vs 6.5 h, P = 0.002). There was no significant difference between the groups in terms of operative bleeding volume (90.00 ± 29.78 vs 85.83 ± 53.56 ml, P = 0.741), total postoperative drainage volume (1020.83 ± 516.5 vs 1406.25 ± 840.33 ml, P = 0.067), ICU (intensive care unit) length of stay (LOS) (43.5 vs 44 h, P = 0.33), hospitalization LOS (9.29 ± 1.92 vs 8.58 ± 1.98 days, P = 0.214) and incidence of freedom from AF or complications. ConclusionsSimultaneous thoracoscopic surgical AF ablation and early-stage lung cancer is safe and feasible. It can be used as an alternative method for coexisting atrial fibrillation and lung cancer with acceptable operative risks.

Predictors for acute exacerbation of interstitial pneumonia following lung cancer surgery: a multicenter study

BackgroundAcute exacerbation (AE) of interstitial lung disease (ILD) is one of the most serious complications during perioperative period of lung cancer resection. This study aimed to investigate the correlation between preoperative 2- deoxy-2-[18F]fluoro-D-glucose (18F-FDG) PET/CT findings and AE in lung cancer patients with ILD.MethodsWe retrospectively reviewed the data of 210 patients who underwent lung resection for non-small cell lung cancer. Relationships between clinical data and PET images and AE were evaluated. The patients were divided into an AE(+) and an AE(-) group for multivariate logistic regression analysis. Receiver operating characteristic (ROC) curve analysis was conducted and the area under curve (AUC) was used to assess the predictive values.ResultsAmong 210 patients, 48 (22.8%) were diagnosed with ILD based on chest CT. Among them, 9 patients (18.75%) developed AE after lung resection and were defined as AE(+) group. The course of ILD was longer in AE(+) group compared to AE(-) group. More patients in AE(+) group had a history of AE and chronic obstructive pulmonary disease (COPD) than in AE(-) group. The maximum standardized uptake value (SUVmax) of the noncancerous interstitial pneumonia (IP) area and cancers in AE(+) group was significantly higher compared to AE(-) group. Univariate logistic regression analysis showed that AE, COPD, SUVmax of the noncancerous IP area, SUVmax of cancer, surgical method were significantly correlated with AE. The course of ILD[OR(95%CI) 2.919; P = 0.032], SUVmax of the noncancerous IP area[OR(95%CI) 7.630;P = 0.012] and D-Dimer level[OR(95%CI) 38.39;P = 0.041] were identified as independent predictors for AE in patients with ILD after lung cancer surgery. When the three indicators were combined, we found significantly better predictive performance for postoperative AE than that of SUVmax of the noncancerous IP area alone [0.963 (95% CI 0.914-1.00); sensitivity, 100%, specificity 87.2%, P < 0.001 vs. 0.875 (95% CI 0.789 ~ 0.960); sensitivity, 88.9%, specificity, 76.9%, P = 0.001; difference in AUC = 0.088, Z = 1.987, P = 0.04].ConclusionThe combination of the course of ILD, SUVmax of the noncancerous IP area and D-Dimer levels has high predictive value for the occurrence of AE in patients with concomitant interstitial lesions.

Overall prognosis of index lung cancer recurrence or of second primary lung cancer in people with non-small cell lung cancer operated with complete resection.

This is a protocol for a Cochrane Review (prognosis). The objectives are as follows: We aim to compare overall survival in people with recurrence and second primary lung cancer (SPLC) after lung cancer surgery. If survival differs between those people categorised as having index lung cancer recurrence and those categorised as having SPLC, it might be possible to identify the definition that has the best discriminatory capacity from the various published definitions of these conditions, so that it can be used in future.

The Impact of COVID-19 Infection Prior to Lung Resection on Postoperative Complications

BackgroundWe hypothesize that previous COVID-19 infection could be associated with postoperative complications (POCs) and outcomes of thoracic surgery for lung cancer. It is unknown whether the respiratory damage caused by COVID-19 infection is permanent. In addition, there is a lack of studies investigating POCs and prior COVID-19 infection in thoracic surgery. MethodsA retrospective study was performed on patients who underwent resections for lung cancer between May 2020 and July 2022. Variables relevant to the Society of Thoracic Surgeons database were collected, as well as COVID-19 status. The primary outcome was postoperative complications. ResultsA total of 361 patients underwent a resection for lung cancer. Patients with a prior COVID-19 infection (n = 21) had significantly more POCs than patients without a history of COVID-19 infection (n = 340, P < .05). Pneumothorax and infections requiring intravenous antibiotics were significantly enriched in patients with a prior COVID-19 infection. COVID-19 infection was independently associated with increased POCs at multivariable analysis (adjust odds ratio, 4.36; 95% CI, 1.48-12.8). Matched case-control analysis also reviewed similar findings, where COVID-19 infection was the only significant variable as a risk factor for POCs (P < .05). ConclusionsAfter a COVID-19 infection, patients undergoing lung cancer resections were at an increased risk of POCs. This suggests that a previous COVID-19 infection should be considered as a potential risk factor for complications after lung cancer resections.