cervical cancers, dysplasia, screening, Mgmt Flashcards
sensitivity of pap smear is only 60-80% BUT pap smears reduce the incidence of invasive cervical carcinoma by __%
95%
which area is very susceptible to HPV?
transformation zone of cervix: area of metaplasia where squamous cells (ectocervix) and columnar cells (endocervix) meet.
what information does the bethesda classification give you?
cytology: tells you what the cells from a pap smear LOOK like, NOT what the tissue is (doesn’t Dx the cancer)
are more pap specimens liquid-based or slide-smear?why?
liquid-based, these are good for doing HPV testing, GC and chlamydia
ACOG- no cervical cancer screening of girls under age ___ . why?
21
abnormal pap results are VERY common before this age.
ACOG reccomends cervical cancer screening for women age __ - ___ at an interval of every __yrs.
21-65yo every 3 years (if they have never had an abnormal result)
when can you stop screening women for cervical cancer?
age 65 only if they have a history of ALL normal results (clear for 20 years)
before age 21, there is a __% chance that ___ _____ and ___ can be cleared by itself in a __ year period.
90%, HPV infection and dysplasia can be cleared by itself in a 3 year period.
women who have had a high-grade abnormal pap result must get screening how often? how long does this interval continue?
they need ANNUAL SCREENING for 20years EVEN if they’ve had a hysterectomy with cervix removed
_____ _____ has a high spontaneous clearance rate
cervical dysplasia
most important cause of cervical dysplasia and cancer?
HPV
HPV strains ___ and ___ are responsible for __% of cervical cancer in the US
16, 18, 70%
what is the bethesda classification system?
from American society of colposcopy and cervical pathology: a way of describing pap smears so txt guidlines can be unified worldwide
(groups: ASC-US, ASC-H, LGSIL/LSIL, HGSIL/HSIL, AGC, AGC-US)
pap shows ___ cells (what classification is this?)
what do you need for Dx?
dysplastic cells. (cytology is bethesda classification)
For Dx you need TISSUE through biopsy (histology = CIN stages)
what are the two most concerning groups of the bethesda classification system?
HGSIL/HSIL : high grade squamous intraepithelial lesion
AGC or AGC-US: atypical glandular cells (of undetermined significance)
what is the most common abnormal pap result? what causes this?
ASC-US: atypical squamous cells of undetermined significance (usually from inflammatory response from infection or atrophy)
there is only a ___% infection risk by high risk- HPV from ASC-US. when is HPV typing useful? (high risk positive vs high risk negative?)
65%
positive: colposcopy
negative: repeat pap in 3 years
what if pap result is ASC-H, what do you need to do? why ?
“atypical squamous cell - can’t rule out high grade” .. higher rate of HPV infection so you need colposcopy
what is LGSIL? what does management of this depend on?
low grade squamous intraepithelial lesion . depends on age and HPV
(status negative HPV test …and under 24- repeat test with only cytology.. and over 24- repeat test with co-test)
what is colposcopy?
magnified view of the cervix : soak cervix in vinegar (acetic acid) or iodine (lugol’s solution) and observe cellular changes with bare eye or colposcope.
** Can be dont with minimal equipment
what is “co-testing”?
HPV and pap smear together (cytology AND histology)
what is HGSIL? what do you do if you get these results?
high-grade squamous intraepithelial lesion
colposcopy REGARDLESS of age
what do you need if you get any AGC result?
colposcopy AND
biopsy (endocervical curettage) AND endometrial biopsy
why do you need endometrial biopsy if you have AGC results?
differentiate between endometrial and endocervical cells
THIS is a high level of concern