TABLE 1.

Classification by numbers

Class	Papanicolaon concepts	Other pathologists concepts
I	Abnormal cells absent	Normal or benign atypia
II	atypical benign	Benign atypia, dysplasias
III	Suspicious, including dyskaryosis	Benign atypia, dysplasias, in-situ carcinomas
IV	Cancer (fairly conclusive)	Benign atypia, dysplasias, invasive, few cells
V	Cancer (convulsive)	In-situ, or invasive with a large number of cells, invasive carcinoma only