we reviewed a total of 119 resected esophagi with intraepithelial neoplasias of low grade ( including slight or moderate dysplasias ) , high grade ( including severe dysplasia and carcinoma in situ ) , or microinvasive squamous carcinoma ( i.e. , not invasive beyond the submucosa and without metastases in regional lymph nodes ) .
C0334048
severe dysplasia
C0007099
carcinoma in situ