a study of dysplastic cells , visually classified as non-keratinizing ( dysn ) , keratinizing ( dysk ) or severely dysplastic from an area of metaplasia ( dysm ) , demonstrated statistically significant differences between the same type of cell depending on the diagnostic category of the patient in which it originated : cases with moderate dysplasia ( mod ) , severe dysplasia/carcinoma in situ ( csd ) or invasive carcinoma ( inv ) .
C0334048
severe dysplasia
C0007099
carcinoma in situ