Bethesda cervical cytology pdf

What is Bethesda category on Pap smear?
The Bethesda System (TBS) replaced three levels of CIN with two levels, low-grade SIL (LSIL) and high-grade SIL (HSIL), which could be used to describe any squamous abnormality of the lower genital tract..
A total of 5000 well-preserved epithelial cells must be present for a smear to be considered satisfactory.
Type of test is noted.
Any quality indicators (eg, presence or absence of endocervical/transformation zone component, partially obscuring blood, inflammation) are described.
Reason is specified.

The Bethesda System was developed in 1988, revised in 1991 and again in 2001. What was new in 2001? The most major change was using LSIL / HSIL.

What is Bethesda category on Pap smear?