The Association of "GOOP" on Gross Examination of Fine Needle Aspiration Samples and On-Site Adequacy.

Background: Rapid on-site cytologic evaluation (ROSE) is not always available for fine needle aspiration (FNA) specimens. We have examined the relationships between the presence of "GOOP" (defined as gooey white material) on FNA aspirates, on-site adequacy (OSA), and diagnosis.

Methods: Consecutive FNA samples obtained over the study interval were included.