A European Federation of Cytology Societies met at the European Congress of Cytology in Lisbon in September 2009 to discuss the need for standardising thyroid FNA nomenclature. All but one of the working party members agreed that thyroid FNA reporting should be standardised.
There was disagreement about the use of: a) the six-tiered as opposed to four or five-tiered systems, b) the use of an indeterminate category and c) the 'follicular neoplasm' category.