PRIMARY OBJECTIVES:
I. To compare the percentage of resected cancers containing germinal centers (GCs) in patients who receive neoadjuvant vitamin A compound (vitamin A) to controls.
SECONDARY OBJECTIVES:
I. To compare the abundance of GCs in adjacent lymph nodes in patients who receive neoadjuvant vitamin A to controls.
II. To compare histopathologic responses based on tumor necrosis in lung cancer patients who receive neoadjuvant vitamin A to controls.
III. To compare overall survival of patients who receive neoadjuvant vitamin A to controls.
EXPLORATORY OBJECTIVES:
I. To describe immunophenotypic changes of monocytes including myeloid derived suppressor cells (MDSCs) in pre- and post-treatment blood samples.
OUTLINE: Participants are randomized to 1 of 2 groups.
GROUP I: Participants receive vitamin A compound orally (PO) for 7 consecutive days in the absence of disease progression or unacceptable toxicity. Within 21 days of completing treatment, participants then undergo surgical resection.
GROUP II: Participants undergo surgical resection.
After completion of study treatment, participants are followed up for 30 days.