Analysis of Outcomes in Early-Stage Non-small Cell Lung Cancer Irradiation: Fractionation Scheme Implications for Stage I Versus Stage II Disease

Author(s):  
X. Qi ◽  
D. Low ◽  
P. Kupelian ◽  
M. Steinberg ◽  
P. Lee
Cancers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 390
Author(s):  
Nicola Martucci ◽  
Alessandro Morabito ◽  
Antonello La Rocca ◽  
Giuseppe De Luca ◽  
Rossella De Cecio ◽  
...  

Small-cell lung cancer (SCLC) is one of the most aggressive tumors, with a rapid growth and early metastases. Approximately 5% of SCLC patients present with early-stage disease (T1,2 N0M0): these patients have a better prognosis, with a 5-year survival up to 50%. Two randomized phase III studies conducted in the 1960s and the 1980s reported negative results with surgery in SCLC patients with early-stage disease and, thereafter, surgery has been largely discouraged. Instead, several subsequent prospective studies have demonstrated the feasibility of a multimodality approach including surgery before or after chemotherapy and followed in most studies by thoracic radiotherapy, with a 5-year survival probability of 36–63% for patients with completely resected stage I SCLC. These results were substantially confirmed by retrospective studies and by large, population-based studies, conducted in the last 40 years, showing the benefit of surgery, particularly lobectomy, in selected patients with early-stage SCLC. On these bases, the International Guidelines recommend a surgical approach in selected stage I SCLC patients, after adequate staging: in these cases, lobectomy with mediastinal lymphadenectomy is considered the standard approach. In all cases, surgery can be offered only as part of a multimodal treatment, which includes chemotherapy with or without radiotherapy and after a proper multidisciplinary evaluation.


2020 ◽  
Author(s):  
Zaoxiu Hu ◽  
Yonghe Zhao ◽  
Yanlong Yang ◽  
Zhenghai Shen ◽  
Yunchao Huang

Abstract Objective: Recent studies indicated sputum miRNAs may provide a promising approach for non-small cell lung cancer (NSCLC) diagnosis. But some results were still inconsistent. So, we performed meta-analysis to evaluate the diagnostic role of sputum miRNAs for the detection of NSCLC.Methods: Eligible studies that estimated the diagnostic accuracy of sputum miRNAs in NSCLC were searched in Pubmed, Embase and Web of Science and Chinese National Knowledge Infrastructure (CNKI). Data from the eligible studies were collected and pooled; sensitivity, specificity, positive and negative likelihood ratios, diagnostic odds ratios, weighted symmetric summary ROC curve and the area under the curve (AUC) were calculated by bi-variate random effects model. The between-study heterogeneity was evaluated by Q test and I2 statistics.Results: 30 studies from 16 articles were included for analysis. The overall analysis yielded the sensitivity of 0.77 (95% CI: 0.73–0.81) and specificity of 0.87 (95% CI: 0.83–0.90), with an area under the SROC curve (AUC) of 0.89 (95% CI: 0.86–0.91). Subgroup analysis revealed the diagnostic accuracy in multiple miRNAs studies was higher than single miRNA (the sensitivity, specifcity and an AUC of multiple miRNAs were 0.76, 0.88 and 0.90; and for single miRNA, it was 0.74, 0.74, and 0.80). The diagnostic performance in early stage NSCLC was also very high (the sensitivity, specifcity and an AUC of stage I/II was 0.76, 0.88 and 0.91; and for stage I, it was 0.79, 0.85, and 0.87). We also found miR-210, miR-21, miR-31 and miR-126-3p might serve as potential biomarkers for lung cancer.Conclusion: Sputum miRNAs was useful noninvasive biomarkers for NSCLC diagnosis.


2020 ◽  
Vol 57 (6) ◽  
pp. 1051-1060 ◽  
Author(s):  
Thomas Winckelmans ◽  
Herbert Decaluwé ◽  
Paul De Leyn ◽  
Dirk Van Raemdonck

Abstract OBJECTIVES The role of segmentectomy in early-stage non-small-cell lung cancer (NSCLC) remains a matter of debate. We performed a meta-analysis to evaluate the oncological outcomes following segmentectomy versus lobectomy for stage I, stage IA only and stage IA <2 cm only. METHODS We systematically searched the literature for articles reporting on overall survival (OS), cancer-specific survival (CSS) or recurrence-free survival (RFS). The hazard ratios (HRs) were retrieved and pooled using an inverse variance-weighted approach. RESULTS Twenty-eight studies were included in the analysis. In stage I, segmentectomy was found to be inferior to lobectomy for all 3 outcomes with HR: 1.25 (P = 0.01) for OS, 1.59 (P = 0.02) for CSS and 1.40 (P < 0.001) for RFS. In stage IA, the differences were significant for OS and CSS, though not for RFS with HR: 1.31 (P = 0.04), 1.56 (P = 0.02) and 1.22 (P = 0.11), respectively. In stage IA <2 cm, no significant differences were found between segmentectomy and lobectomy with HR: 1.13 (P = 0.37) for OS, 1.02 (P = 0.95) for CSS and 1.24 (P = 0.11) for RFS. CONCLUSIONS For stages I and IA, lobectomy showed superior results whereas for tumours <2 cm, our study did not find significant differences in oncological outcomes between both groups. These results suggest that segmentectomy might be a valuable alternative to lobectomy for NSCLC in tumours <2 cm.


2009 ◽  
Vol 27 (15_suppl) ◽  
pp. 7585-7585
Author(s):  
J. M. Varlotto ◽  
A. Recht ◽  
J. C. Flickinger ◽  
A. Dyer ◽  
L. Medford-Davis ◽  
...  

7585 Background: Small cell lung cancer (SCLC) rarely presents as I/II Disease. In order to assess the incidence, treatment and prognosis of this early-stage SCLC, we used the Surveillance, Epidemiology and End Results database. Furthermore, since some investigators are irradiating growing and/or PET Scan positive nodules without biopsy, presenting characteristics of surgically-resected Stage I SCLC were compared to those of non-small cell lung cancer (NSCLC). Methods: The SEER 17 Database from 1988–2003 was accessed for all patients with early-stage SCLC. Presenting characteristics of surgically-resected Stage I SCLC were compared to those of resected Stage I NSCLC using chi-square and Wilcoxon Rank Sum tests. The logrank test was used to compare the differences in Survival(S) resulting from the various treatments options for early-stage SCLC. Results: 1,615 patients were identified with early-stage SCLC with greater than 3 months of follow-up. The median S was 20 months for the entire group. Over the time period of our study, the incidence of early stage SCLC as a percentage of all SCLCs and all lung cancers (SCLCs and NSCLCs) remained stable and ranged from 3.00–4.96% and 0.09–0.16% respectively. Surgically-resected Stage I SCLC did not differ from NSCLC in regards to patient characteristics (age, sex, race) or tumor location, but SCLC was found to have significantly smaller tumor size (p< 0.0001). Lobectomy or greater resections without radiotherapy were associated with a greater median S than those treated with segmental/wedge resections and those treated with radiotherapy alone (44 vs 29 months, p=0.03 and 20 months, p <0.0001). Furthermore, when lobectomy or greater resection was performed, adjuvant radiotherapy was associated with a shorter, but not significantly different median S (32 vs 44 months, p = 0.17). Segmental/wedge resections without radiotherapy were associated with significantly better S than patients who received radiotherapy alone, but no difference in S was found with the use of adjuvant radiotherapy (29 vs 20 months, p =0.003, and 35 months, p=0.31). Conclusions: The incidence of stage I/II small cell lung cancer was stable over the years of our study. Anatomic lobectomy without adjuvant radiotherapy appears to be the optimal therapy for patients without mediastinal nodal metastases. No significant financial relationships to disclose.


2012 ◽  
Vol 12 (2) ◽  
pp. 139-145
Author(s):  
Maria Wilczynska ◽  
Angel Garcia-Alonso

AbstractIntroduction: Surgery is the treatment of choice in stage I and II non-small-cell lung cancer (NSCLC). In the management of patients who are medically unfit to tolerate surgical intervention or who refuse surgery, radiotherapy is an acceptable alternative. We have performed a retrospective analysis of the effectiveness of radical radiotherapy in patients with early stage NSCLC treated over a period of 4 years.Methods: Thirty nine patients treated with radiotherapy of radical intent were identified. All patients received hypofractionated radiotherapy with a total dose of 55Gy in 20 fractions.Results: The median survival of all cases was 29 months. The one and two-year survival was respectively 61 % and 41%. The median survival of patients ≥75 years was 28 months, and age was the only prognostic factor identified in this analysis that affected survival.Conclusions: The presented survival results are consistent with those from other series published in the literature. At present, radical radiotherapy is often offered to patients with medically inoperable stage I and II NSCLC or those who decline surgery. But there is emerging evidence that some new techniques like stereotactic radiotherapy could be also used in the operable, early stage NSCLC.


2005 ◽  
Vol 23 (28) ◽  
pp. 6873-6880 ◽  
Author(s):  
Branislav Jeremić ◽  
Biljana Milicić ◽  
Ljubisa Acimović ◽  
Slobodan Milisavljević

PurposeFeasibility and activity of concurrent hyperfractionated radiotherapy (Hfx RT) and low-dose, daily carboplatin and paclitaxel were investigated in patients with early-stage (I/II) non–small-cell lung cancer in a phase II study.Patients and MethodsFifty-six patients started their treatment on day 1 with 30 mg/m2of paclitaxel. Hfx RT using 1.3 Gy bid to a total dose of 67.6 Gy and concurrent low-dose daily carboplatin 25 mg/m2and paclitaxel 10 mg/m2, both given Mondays through Fridays during the RT course, started from the second day.ResultsThere were 29 complete responses (52%) and 15 partial responses (27%), and 12 patients (21%), experienced stable disease. The median survival time was 35 months, and 3- and 5-year survival rates were 50% and 36%, respectively. The median time to local progression has not been achieved, but 3- and 5-year local progression-free survival rates were 56% and 54%, respectively. The median time to distant metastasis has not been achieved, but 3- and 5- year distant metastasis-free survival rates were 61% and 61%, respectively. The median and 5-year cause-specific survivals were 39 months and 43%, respectively. Acute high-grade (> 3) toxicity was hematologic (22%), esophageal (7%), or bronchopulmonary (7%). No grade 5 toxicity was observed. Late high-grade toxicity was rarely observed (total, 10%).ConclusionHfx RT and concurrent low-dose daily carboplatin/paclitaxel was feasible with low toxicity and effective in patients with stage I/II non–small-cell lung cancer. It should continue to be investigated for this disease.


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