Where is the usual site of cervical dysplasia or cancer in situ?
A)Squamous epithelium of the cervix meets the cuboidal epithelium of the vagina.
B)Columnar epithelium of the cervix meets the squamous epithelium of the uterus.
C)Squamous epithelium of the cervix meets the columnar epithelium of the uterus.
D)Columnar epithelium of the cervix meets the squamous epithelium of the vagina.

Question

Quizplus · Accepted Answer

The point at which the columnar epithelium of the cervix meets the squamous epithelium of the vagina is called the transformation zone or the squamous-columnar junction. The transformation zone is especially susceptible to the oncogenic human papillomavirus (HPV), which leads to cervical dysplasia and, ultimately, cervical cancer; these are the cells sampled during a Papanicolaou (Pap) test.

Where Is the Usual Site of Cervical Dysplasia or Cancer