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Hui WK, Charaf Z, Hendriks JMH, Van Schil PE. True Prevalence of Unforeseen N2 Disease in NSCLC: A Systematic Review + Meta-Analysis. Cancers (Basel) 2023; 15:3475. [PMID: 37444585 DOI: 10.3390/cancers15133475] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/25/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Patients with unforeseen N2 (uN2) disease are traditionally considered to have an unfavorable prognosis. As preoperative and intraoperative mediastinal staging improved over time, the prevalence of uN2 changed. In this review, the current evidence on uN2 disease and its prevalence will be evaluated. A systematic literature search was performed to identify all studies or completed, published trials that included uN2 disease until 6 April 2023, without language restrictions. The Newcastle-Ottawa Scale (NOS) was used to score the included papers. A total of 512 articles were initially identified, of which a total of 22 studies met the predefined inclusion criteria. Despite adequate mediastinal staging, the pooled prevalence of true unforeseen pN2 (9387 patients) was 7.97% (95% CI 6.67-9.27%), with a pooled OS after five years (892 patients) of 44% (95% CI 31-58%). Substantial heterogeneity regarding the characteristics of uN2 disease limited our meta-analysis considerably. However, it seems patients with uN2 disease represent a subcategory with a similar prognosis to stage IIb if complete surgical resection can be achieved, and the contribution of adjuvant therapy is to be further explored.
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Affiliation(s)
- Wing Kea Hui
- Department of Thoracic and Vascular Surgery, University Hospital Antwerp, Drie Eikenstraat 655, 2650 Edegem, Belgium
| | - Zohra Charaf
- Department of Cardiothoracic Surgery, University Hospital Brussels, Laarbeeklaan 101, 1090 Jette, Belgium
| | - Jeroen M H Hendriks
- Department of Thoracic and Vascular Surgery, University Hospital Antwerp, Drie Eikenstraat 655, 2650 Edegem, Belgium
- ASTARC (Antwerp Surgical Training, Anatomy and Research Centre), University Hospital Antwerp, Drie Eikenstraat 655, 2650 Edegem, Belgium
| | - Paul E Van Schil
- Department of Thoracic and Vascular Surgery, University Hospital Antwerp, Drie Eikenstraat 655, 2650 Edegem, Belgium
- ASTARC (Antwerp Surgical Training, Anatomy and Research Centre), University Hospital Antwerp, Drie Eikenstraat 655, 2650 Edegem, Belgium
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Hall H, Tocock A, Burdett S, Fisher D, Ricketts WM, Robson J, Round T, Gorolay S, MacArthur E, Chung D, Janes SM, Peake MD, Navani N. Association between time-to-treatment and outcomes in non-small cell lung cancer: a systematic review. Thorax 2022; 77:762-768. [PMID: 34404753 PMCID: PMC9340041 DOI: 10.1136/thoraxjnl-2021-216865] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 07/16/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND National targets for timely diagnosis and management of a potential cancer are driven in part by the perceived risk of disease progression during avoidable delays. However, it is unclear to what extent time-to-treatment impacts prognosis for patients with non-small cell lung cancer, with previous reviews reporting mixed or apparently paradoxical associations. This systematic review focuses on potential confounders in order to identify particular patient groups which may benefit most from timely delivery of care. METHODS Medline, EMBASE and Cochrane databases were searched for publications between January 2012 and October 2020, correlating timeliness in secondary care pathways to patient outcomes. The protocol is registered with PROSPERO (the International Prospective Register of Systematic Reviews; ID 99239). Prespecified factors (demographics, performance status, histology, stage and treatment) are examined through narrative synthesis. RESULTS Thirty-seven articles were included. All but two were observational. Timely care was generally associated with a worse prognosis in those with advanced stage disease (6/8 studies) but with better outcomes for patients with early-stage disease treated surgically (9/12 studies). In one study, patients with squamous cell carcinoma referred for stereotactic ablative radiotherapy benefited more from timely care, compared with patients with adenocarcinoma. One randomised controlled trial supported timeliness as being advantageous in those with stage I-IIIA disease. CONCLUSION There are limitations to the available evidence, but observed trends suggest timeliness to be of particular importance in surgical candidates. In more advanced disease, survival trends are likely outweighed by symptom burden, performance status or clinical urgency dictating timeliness of treatment.
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Affiliation(s)
- Helen Hall
- Lungs for Living Research Centre, UCL Respiratory, UCL, London, UK
| | - Adam Tocock
- Barts Health Knowledge and Library Services, Barts Health NHS Trust, London, UK
| | | | - David Fisher
- MRC Clinical Trials Unit at UCL, UCL, London, UK
| | | | - John Robson
- Centre for Primary Care and Public Health, Queen Mary University of London, London, UK
| | - Thomas Round
- School of Population Health and Environmental Sciences, King's College London, London, UK
| | - Sarita Gorolay
- XX Place Health Centre, London Borough of Tower Hamlets, London, UK
| | - Emma MacArthur
- Centre for Cancer Outcomes, North Central and North East London Cancer Alliances, University College London Hospitals NHS Foundation Trust, London, UK
| | - Donna Chung
- Centre for Cancer Outcomes, North Central and North East London Cancer Alliances, University College London Hospitals NHS Foundation Trust, London, UK
| | - Sam M Janes
- Lungs for Living Research Centre, UCL Respiratory, UCL, London, UK
| | - Michael D Peake
- Centre for Cancer Outcomes, North Central and North East London Cancer Alliances, University College London Hospitals NHS Foundation Trust, London, UK
- Department of Respiratory Medicine, University of Leicester, Leicester, UK
| | - Neal Navani
- Lungs for Living Research Centre, UCL Respiratory, UCL, London, UK
- Department of Thoracic Medicine, University College London Hospital, London, UK
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Sato M. Should a therapeutic strategy be based on how the disease was diagnosed? J Thorac Dis 2018; 10:1245-1247. [PMID: 29707274 DOI: 10.21037/jtd.2018.02.92] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Masaaki Sato
- Department of Thoracic Surgery, The University of Tokyo Hospital, Tokyo, Japan
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