Cervical cancer Flashcards
What is the distribution of incidence for cervical cancer?
Bimodal: 25-29 and >80 peak
List two risk factors for cervical cancer
HPV smoking COCP use multiple sexual partners immunosuppression
Which HPV subtypes are implicated in cervical cancer?
16 and 18
When do vaccinations take place for HPV?
11-13 girls (boys as well for herd immunity)
Which vaccination is given and against which HPV strains is it effective?
GARDISAL
HPV 6,11,16,18
What is the minimum protection?
10 years
What is the screening age and rate of screening?
25-65y
25-49 every 3 years
>50 every 5 years
What are the two cell types in the cervix?
endocervix- columnar epithelium
ectocervix- squamous epithelium
Where does cervical cancer occur?
transitional zone, between columnar and squamous epithelium. This is a physiological site of metaplasia, however HPV interferes with this process
If an abnormal cervix is observed during smear test, what should be done?
smear is inappropriate- require biopsy
Name two modalities of biopsy for CC?
punch
LLETZ- large loop excision of transformation zone
Name two indications for colposcopy referral
abnormal screening smear
suspcious symptoms/abnormal cervix
How are pathological changes viewed with the colposcopy?
application of acetic acid which highlight mosaisicsm, abnormal vessels, and acetowhite appearance
What are the types of CIN?
CIN 1= low grade
CIN 2 and CIN3= high grade
Which CIN types require treatment?
CIN2 and 3
not CIN1- monitor