Table 4 Summary of UK, European and American guidelines on the management of potentially resectable N2 NSCLC.

From: The current treatment landscape in the UK for stage III NSCLC

Guideline

Definition of ‘resectable’

Recommendations

Notes

BTS and SCTS (2010)

Non-fixed lymph nodes

Non-bulky lymph nodes

Single-zone N2 disease

Reasonable chance of:

Complete resection

Clear pathological margins

Consider surgery as part of multi-modality treatment in non-fixed, non-bulky, single-zone N2 NSCLC

Further research into the role of surgery in non-fixed, non-bulky, multi-zone N2 NSCLC

Significant weight placed on IASLC staging database outcomes despite lack of comparator group and lack of clinical N2

Guidelines consider evidence for adjuvant chemotherapy more robust than pre-operative chemotherapy

ACCP (2013)

Discrete lymph nodes

Easily measurable and defined lymph nodes

Free from major structures, such as the great vessels and trachea

Definitive CRT or induction therapy (chemotherapy or CRT) followed by surgery

Surgery followed by adjuvant chemotherapy not recommended

Does not support the concept that surgery can only be justified in patients with minimal N2 disease

Pre-operative chemotherapy better than surgery alone in all NSCLC (small studies) and therefore surgery plus adjuvant chemotherapy is not recommended

ESMO (2015)

Minimal, non-bulky N2 disease

Single-station N2 disease

Definitive CRT, induction chemotherapy followed by surgery or induction CRT followed by surgery

Paramount importance of an experienced and high-volume multi-disciplinary team (MDT) and treatment centres able to minimise risk and complications from multi-modality treatment highlighted

NCCN (2018)

Low-volume lymph nodes

Non-invasive lymph nodes

Pathologically proven

Measuring <3 cm

Definitive CRT or induction chemotherapy followed by surgery or induction CRT followed by surgery

Maintenance durvalumab following cCRT

Benefit from pre-operative chemotherapy is similar to that of post-operative chemotherapy and either approach is justified

NICE (2019)

None provided

Consider CRT followed by surgery

CRT followed by surgery improves PFS and might improve survival compared with CRT alone

  1. This table was created by the author using guidance from refs. 15,23,24,31,34
  2. ACCP American College of Chest Physicians, BTS British Thoracic Society, CRT chemoradiotherapy, cCRT concurrent chemoradiotherapy, ESMO European Society of Medical Oncology, IASLC International Association for the Study of Lung Cancer, NICE National Institute for Health and Care Excellence, NCCN National Comprehensive Cancer Network, NSCLC non-small cell lung cancer, PFS progression-free survival, SCTS The Society for Cardiothoracic Surgery in Great Britain and Ireland.