Risk of malignancy in the various categories of the UK Royal College of Pathologists Thy terminology for thyroid FNA cytology: A systematic review and meta-analysis.

This meta-analysis shows results comparable to those of meta-analyses of other internationally recognized reporting terminologies for the pooled ROMs for surgically excised nodules in the various Thy reporting categories. There is comparatively little difference (only 6%) between the pooled ROMs of Thy3a and Thy3f surgically excised nodules.