Large-Cell Neuroendocrine Carcinoma of the Lung: A Population-Based Study

• Published in: Clinical lung cancer Vol. 21; no. 2; pp. e99 - e113
• Main Authors: Kinslow, Connor J., May, Michael S., Saqi, Anjali, Shu, Catherine A., Chaudhary, Kunal R., Wang, Tony J.C., Cheng, Simon K.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.03.2020
• Subjects: Aged; Carcinoma, Large Cell - epidemiology; Carcinoma, Large Cell - mortality; Carcinoma, Large Cell - pathology; Carcinoma, Neuroendocrine - epidemiology; Carcinoma, Neuroendocrine - mortality; Carcinoma, Neuroendocrine - pathology; Carcinoma, Non-Small-Cell Lung - epidemiology; Carcinoma, Non-Small-Cell Lung - mortality; Carcinoma, Non-Small-Cell Lung - pathology; Epidemiology; Female; Follow-Up Studies; Humans; Incidence; LCNEC; Lung Neoplasms - epidemiology; Lung Neoplasms - mortality; Lung Neoplasms - pathology; Male; Mortality - trends; Neoplasm Metastasis; Neuroendocrine tumor; Prevalence; Prognosis; Retrospective Studies; Small Cell Lung Carcinoma - epidemiology; Small Cell Lung Carcinoma - mortality; Small Cell Lung Carcinoma - pathology; Survival; Survival Rate; United States - epidemiology; United States; LCNEC; Neuroendocrine tumor; Epidemiology; Survival; Incidence
• ISSN: 1525-7304; 1938-0690; 1938-0690
• DOI: 10.1016/j.cllc.2019.07.011

Large-cell neuroendocrine carcinoma (LCNEC) accounts for approximately 3% of lung malignancies. There are limited data on the epidemiology and best treatment practices for this malignancy. This study aimed to be the largest cohort with the most up-to-date analysis of the epidemiology of LCNEC. The Surveillance, Epidemiology, and End Results (SEER) database was queried to identify cases of LCNEC diagnosed from 2010 through 2015, reflecting years the American Joint Committee on Cancer 7th edition staging system was in use. Using these data, we compared the epidemiology, demographics, clinical characteristics, and survival times of LCNEC with small-cell lung carcinoma (SCLC) and non-SCLC (NSCLC). Trends in incidence and mortality were recorded from 2004 to 2015. A total of 195,148 cases of lung cancer, including 1681 (0.9%) cases of LCNEC, were analyzed. LCNEC was more common among male subjects, and disease usually presented at stage IV (55%). Brain metastasis occurred more frequently in LCNEC (19.2%) than SCLC (16.7%, P < .001) or NSCLC (13%, P < .001). Incidence increased by 0.011 people per 100,000 per year, primarily of stage IV disease. Annual mortality from LCNEC doubled over the time period studied. Survival in patients with stage I-III LCNEC mirrored survival trends of patients with NSCLC, whereas stage IV LCNEC behaved similarly to SCLC. LCNEC generally presents at more advanced stages than NSCLC but earlier than SCLC. Stage I-III LCNEC behaves similarly to NSCLC, whereas stage IV is more akin to SCLC. LCNEC incidence is increasing. Despite this, it remains poorly studied and did not demonstrate an improved prognosis in our cohort. The Surveillance, Epidemiology, and End Results (SEER) database was used to assess the epidemiology of pulmonary large-cell neuroendocrine carcinoma (LCNEC). Prognosis for early-stage LCNEC mirrors non–small-cell lung cancer, while that of late-stage disease is akin to small-cell lung cancer. Incidence and mortality of LCNEC is increasing in the United States. More research is needed to address this growing cause of mortality.