Gynae Flashcards
(827 cards)
What age range is cervical cancer most commonly seen in?
35-44
What are the two most common types of cervical cancer?
- Squamous cell carcinoma (80%)
2. Adenocarcinoma
What is the most common cause of cervical cancer?
HPV
What vaccination is given against cervical cancer?
HPV Vaccine
At what age is the HPV vaccine given and why?
12-13 (hopefully before they become sexually active)
Which strains of HPV are usually responsible for cervical cancer?
Type 16
Type 18
How does HPV promote the development of cancer?
It produces two proteins that inhibit tumour suprrosor genes
What cells make up the ectocervix?
Squamous cells
What cells make up the endocervix?
Collumnar cells
What is the squamocolumnar junction?
The junction at the cervix where the squamous cells transition into collumnar cells.
Where is the squamocolumnar junction?
Location varies throughout life
Why is the squamocolumnar junction the main target for HPV?
There is the largest turnover of cells there and so it can easily enter and remain
When is the squamocolumnar junction cell turnover most active and why does this matter?
During puberty, therefore this is when people are most at risk of HPV
What are the 3 categories of risk factor for cervical cancer?
- Increased risk of HPV
- Later detection of precancerous and cancerous changes (non-engagement with screening)
- Other risk factors
What factors increase the risk of catching HPV?
- Early sexual activity
- Multiple sexual partners
- Sexual partners who have multiple partners
- Unprotected sex
What are other risk factors for cervical cancer?
- Not attending smears
- Smoking
- HIV
- COCP > 5 years
- Multigravida
- Family history
- Exposure to diethylstilbestrol during fetal development
What are the presenting symptoms of cervical cancer?
- Asymptomatic (screening)
- Abnormal vaginal bleeding (intermenstrual, postcoital, post-menopausal)
- Vaginal discharge
- Pelvic pain
- Dyspareunia
How is suspected cervical cancer investigated?
Speculum examination
Swabs to exclude infection
Colposcopy
What appearances on colposcopy may indicate cervical cancer?
Ulceration
Inflammation
Bleeding
Visible tumour
What is dysplasia?
Premalignant change
What is the grading system used to measure the level of dysplasia in the cervix?
CIN- Cervical intraepithelial neoplasia
When is CIN decided?
At colposcopy (not cervical screening)
What are the different grades of cervical cancer?
CIN I: Mild dysplasia (1/3 thickness of epithelial layer- likely to return to normal)
CIN II: Moderate dysplasia( 2/3 thickness of epithelial layer- likely to turn into cancer)
CIN III: Severe dysplasia (very likely to turn into cancer)
What is CIN III otherwise known as?
Cervical carcinoma in situ