This study is a single center, minimal risk, physician initiated retrospective chart review. An analysis of treatment timelines for patients diagnosed with lung cancer within the St. Elizabeth system from January 2013 until study completion. The study investigator and designee(s) will review patient electronic medical records, extracting data related to the symptom presentation, diagnosis, and treatment of new diagnoses of lung cancer. Collected data will focus on dates of encounters, diagnostic imaging/procedures, and treatments, with data analysis evaluating time between care encounters and potential delays in care. The data will be further stratified based on system-wide changes implemented to improve efficiency, patient outcomes, and patient experience.

Inclusion Criteria:

• Patient seen within the St. Elizabeth system
• >=18 years of age
• New diagnosis of histologically or cytologically documented primary lung cancer diagnosed January 2013 or later

Exclusion Criteria:

• Patients with metastatic lung disease of other primary
• Other malignancies at investigator's discretion
• Patient received treatment at a facility outside of St. Elizabeth where records are not available through EPIC
• Patient currently undergoing treatment for new diagnosis of lung cancer

Patients diagnosed with lung cancer within the St. Elizabeth system from January 2013 until study completion.