Cervical Screening Flashcards
Frequency of smears and age of women
5 yearly HPV test with partial HPV genotype gets and reflex LBC
Women age 25-74
Two most common high risk HPV and what percentage of cancers are related to this type
16 & 18
70% squamous cell cancers
Viral composition of Gardasil-9
Non-infectious recombinant vaccine prepared from the purified virus-like particles of the major capsid (L1) protein of HPV types 6,11,16,,18, 31,33,45,52,58
5 features to be recognized during colposcopy
Surface contour Blood vessel pattern Ace to white Topography Iodine uptake
Transformation zone
Area lying between the original squamous-columnar junction and the new squamous-columnar junction
Squamous-columnar junction undergoes a maturation process/metaplasia and migrates towards the os at the endcevical canal
Oestrogen increases cervical volume and results in reversion of the columnar epithelium onto the ectocervix
Acidic vaginal environment results in meta plasia and a new junction
Iodine uptake
Dependent on amount of glycogen in cell which is a reflection of the degree of differentiation
Features of a good screening test
The test needs to be effective Prevent a sig number of deaths Cost effective Acceptable to patient Sensitive and specific