Cervical Screening and Vulval Pathology Flashcards
endocervical cells are filled with what substance?
mucin
the endo/ectocervix is more fragile
endo (only 1 cell thick)
what is the transformation zone of the cervix?
squamocolumnar junction between ectocervical and endocervical epithelia
endocervical cells make up what epithelium?
columnar
ectocervical cells make up what epithelium?
squamous
name the cell layers of the ectocervix
exfoliating cells superficial cells intermediate cells parabasal cells basal cells BM
what can alter the position of the transformation zone?
menarche
pregnancy
menopause
why can you get physiological squamous epithelium in the cervix?
exposure of the delicate endocervical epithelium to acid can cause squamous metaplasia
the presence of what stuctures on the cervix indicate physiological squamous metaplasia?
nabothian follicles
cervicitis is often asymptomatic T or F
T
what STIs can cause cervicitis?
chlamydia
HSV
medical term for cervical pre-cancer
cervical intraepithelial neoplasia
name the 2 main cervical cancers
- squamous carcinoma
2. adenocarcinoma
what HPV strains cause cervical cancer?
16
18
what does HPV infect to cause cervical cancer?
invades epithelial cells in the cervical mucosa
risk factors for CIN/cervical cancer
vulnerability of SC junction
many sexual partners
smoking
immunosuppression
what can make the SC junction vulnerable?
young at first intercourse
long term use of COC
non-use of barrier contraception
“wrinkly, abnormal nuclei”
viral infection
describe the appearance of koilocytosis
thickened, papillomatous squamous epithelium with cytoplssmia vacuolation
what determines whether CIN has become cancer
cells need to break through the basement membrane