1. Analysis of Surveillance, Epidemiology, and End Results Database for Carcinoid Tumors 
Dr Arnold M. Schwartz, MD, PhD, Dr Donald E. Henson, MD 
CHEST 
Volume 148, Issue 3, Pages e104-e105 (September 2015)
DOI: /chest
Copyright © 2015 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Log (age-specific incidence per 100,000) vs log (age at presentation) for small cell neuroendocrine carcinoma of the lung (solid line) and for typical pulmonary carcinoid (dashed line). Note that the curves are nearly linear, conforming to multistage carcinogenic pathways, and that the curves are not parallel, indicating that the carcinogenic pathways do not overlap.
CHEST  , e104-e105DOI: ( /chest )
Copyright © 2015 The American College of Chest Physicians Terms and Conditions