Cervical intraepithelial neoplasia (CIN) invasive squamous carcinoma of the cervix, and atypical squamous cells of undetermined significance (ASCUS)
 
Well differentiated invasive squamous carcinoma. Note small squamous cells with pyknotic nuclei which vary in size and shape. Cytoplasm is highly keratinised a small cluster of undifferentiated tumour cells are also seen in the right hand corner. Note tumour diathesis.