There are multiple definitions:
atypia of undetermined significance(English)
- major part of the indeterminate category
- FLUS, NIFTP, FNA, TT
- Thyroid and parathyroid, Nomenclature
- https://www.thy…-8-issue-3-p-7/
- https://doi.org…0434-018-6932-5
artificial urinary sphincter(English)