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Population-Based Patterns of Surgical Care for Stage IIIA NSCLC in the Netherlands between 2010 and 2013
Chris Dickhoff1, Max Dahele2, A Joop de Langen3
1Department of Cardio-Thoracic Surgery, VU University Medical Center, Amsterdam, The Netherlands; Department of Surgery, VU University Medical Center, Amsterdam, The Netherlands.
Introduction:
Current guidelines include both induction therapy plus an operation and chemoradiotherapy (CRT) as options for clinical stage IIIA (cIIIA) non-small cell lung cancer (NSCLC) after multidisciplinary evaluation. We explored the use of operations for cIIIA NSCLC in the Netherlands.
Methods:
Data about the primary treatment of patients with cIIIA NSCLC (according to the seventh edition of the Tumour, Node, and Metastasis Classification of Malignant Tumours) between 2010 and 2013 were extracted from the Netherlands Cancer Registry. Mortality information was obtained from the automated civil registry.
Results:
A total of 4816 patients with cIIIA NSCLC (stage cN2, 3240 [67%]; stage T4, 1252 [26%]) were identified. CRT was used in 45% of patients and an operation was a component of treatment in 15%, with 28% of the latter having induction therapy. The 4-year survival rate was highest with induction therapy plus an operation (51%), followed by an operation plus adjuvant therapy (39%) and CRT (27%). Patients receiving induction therapy plus an operation were younger than those receiving CRT (median age 60 versus 66 years). The 30- and 90-day postoperative mortality rates after induction therapy plus lobectomy were 0.6% and 3.7% compared with 4.2% and 12.5% after induction therapy plus bilobectomy or pneumonectomy. Factors associated with poorer survival after induction therapy plus an operation were age older than 69 years, histological findings of nonsquamous cell carcinoma, and bilobectomy or pneumonectomy. Pathological stage IIIA NSCLC was present in only 51% of patients with cIIIA NSCLC who underwent an operation with or without adjuvant therapy, and the disease was of a lower stage in most of the remaining patients.
Conclusions:
In the Netherlands between 2010 and 2013, 15% of patients with cIIIA NSCLC received an operation, with the minority of these patients receiving induction therapy. In those receiving induction therapy, 90-day mortality after bilobectomy or pneumonectomy was more than three times higher than that for lobectomy. The discrepancy between clinical and pathological stage in patients receiving an upfront operation merits further investigation.
