Gynae cancers Flashcards
CIN is diagnosed at colposcopy. What does CIN stand for?
Cervical intraepithelial neoplasia
What are the 3 grades of CIN? What do they tell you?
- CIN 1, 2, 3
- The level of dysplasia (premalignant change) in the cells of the cervix
How does HPV promote the development of cancer?
HPV produces 2 proteins (E6, E7) which inhibit tumour suppressor genes (p53, pRb)
What is CIN 3 sometimes known as?
Cervical carcinoma in situ
What does CIN 1 indicate? Does it require treatment?
- Mild dysplasia
- Affecting 1/3 the thickness of epithelial layer
- Likely to return to normal without treatment
What does CIN 2 indicate? Does it require treatment?
- Moderate dysplasia
- Affecting 2/3 the thickness of the epithelial layer
- Likely to progress to cancer if untreated
What does CIN 3 indicate?
- Severe dysplasia
- Full thickness of the epithelial layer affected
What are cells from cervical smear examined for?
Dyskaryosis (pre cancerous change)
What are cells from colposcopy examined for?
Dysplasia (pre malignant change)
Who requires cervical screening every 3 years vs every 5 years?
- Women 25-49 = 3 years
- Women 50-64 = 5 years
How long should women wait for a routine cervical smear post partum?
Until 12 weeks post party
What is the management of the following smear results?
1. Inadequate sample
2. HPV negative
3. HPV positive with normal cytology
4. HPV positive with abnormal cytology
- Repeat the smear after at least three months
- Continue routine screening
- Repeat the HPV test after 12 months
- Refer for colposcopy
What 2 stains are used in colposcopy? What do they show?
- Acetic acid - abnormal cells will appear white
- Iodine - healthy cells will stain brown
What procedure can be carried out during a colposcopy procedure under local anaesthetic?
Loop biopsy
What procedure is carried out under general anaesthetic to treat CIN?
Cone biopsy
What are the FIGO stages of cervical cancer?
- Stage 1: Confined to the cervix
- Stage 2: Invades the uterus or upper 2/3 of the vagina
- Stage 3: Invades the pelvic wall or lower 1/3 of the vagina
- Stage 4: Invades the bladder, rectum or beyond the pelvis
What monoclonal ab may be used in combination with other chemotherapies in the treatment of metastatic/recurrent cervical cancer? What does it target? What does it prevent?
- Bevacizumab (Avastin)
- Vascular endothelial growth factor A
- The development of new blood vessels
What strains of HPV cause…
1. Genital warts
2. Cervical cancer
- 6/11
- 16/18
What’s the most common type of vaginal cancer?
Secondary vaginal cancer
Where has vaginal cancer typically metastasised from?
Cervix/endometrium
What is the precancerous condition from endometrial cancer? What are the two types
Endometrial hyperplasia
- Hyperplasia without atypia
- Atypical hyperplasia
How is endometrial hyperplasia treated? What are the 2 options?
With progestogens
- IUS
- Continuous oral progestogens
What are 2 risk factors for endometrial cancer that are not related to unopposed oestrogen?
- Diabetes
- Hereditary nonpolyposis colorectal cancer/Lynch syndrome
Who does NICE recommend referring for TVUSS with endometrial cancer in mind?
Women > 55 yrs with…
- Unexplained vaginal discharge
- Visible haematuria + raised platelets, anaemia or elevated glucose levels
What endometrial thickness is normal in post menopausal women?
< 4 mm
What biopsy is used for endometrial cancer?
Pipelle biopsy
What are the FIGO stages for endometrial cancer?
- Stage 1: Confined to the uterus
- Stage 2: Invades the cervix
- Stage 3: Invades the ovaries, fallopian tubes, vagina or lymph nodes
- Stage 4: Invades bladder, rectum or beyond the pelvis
What’s the treatment of stage 1 and 2 endometrial cancer?
Total abdominal hysterectomy with bilateral salpingo-oophorectomy
What is VIN?
Vulval intraepithelial neoplasia - a premalignant condition affecting the squamous epithelium of the skin
What are the 3 types of VIN?
- Low grade squamous intraepithelial lesion
- High grade squamous intraepithelial lesion
- Differentiated VIN
What type of VIN is associated with HPV infection? What age group does this typically affect?
- High grade squamous intraepithelial lesion
- Younger women aged 35 – 50 years
What type of VIN is associated with lichen sclerosis? What age group does this typically affect?
- Differentiated VIN
- Older women aged 50-60
What can be used to estimate the risk of an ovarian mass being malignant? What does it take into account?
- Risk of malignancy index
- Menopausal status, ultrasound findings, Ca 125
What are the FIGO stages for ovarian cancer?
- Stage 1: Confined to the ovary
- Stage 2: Spread past the ovary but inside the pelvis
- Stage 3: Spread past the pelvis but inside the abdomen
- Stage 4: Spread outside the abdomen
Give 3 examples of dopamine agonists?
- Ropinirole
- Bromocriptine
- Cabergoline
Give 3 examples of MAOis?
- Isocarboxazid
- Phenelzine
- Selegiline
What is first line imaging when investigating possible…
- Cervical cancer
- Endometrial
- Ovarian
- Cervical cancer - colposcopy
- Endometrial - TVUSS
- Ovarian - pelvic USS
What imagining is used to stage gynae cancer?
CT
What is the most common gynaecological malignancy?
Endometrial cancer
Endometrial cancer is caused by ………. . What can cause this?
Unopposed oestrogen
Caused by…
Late menopause
Ovarian tumours
Oestrogen only HRT
PCOS
Obesity
Lynch syndrome
What gynae cancers present with bleeding?
Endometrial cancer
Cervical cancer
RF for cervical cancer?
High risk HPV
Missed vaccination
Early age intercourse
Multiple sexual partners
STDs
Smoking
OCP usage
Clinical manifestations of ovarian/Fallopian tube cancer
Bloating
Abdo pain
Mass
Change in bowel habit
Increased urinary frequency
Investigations for breast cancer
Imaging - USS or mammography
Biopsy - fine needle aspiration of core biopsy
When are USS used to investigate breast cancer
In younger women (<30). They are used to distinguish between solid lumps and cystic lumps
Breast cancer cells may have receptors that can be targeted with treatment. Name the 3 different receptors
Oestrogen receptors
Progesterone receptors
Human epidermal growth factor (HER2)
Name the breast cancer that doesn’t express any of the three receptors. Does it carry a better/worse prognosis?
Triple-negative breast cancer
Worse prognosis
Where does breast cancer typically metastasise?
Lungs
Liver
Bones
Brain
Surgical options for breast cancer
Breast conservation (lumpectomy)
Mastectomy
Full/limited axillary clearance
When is full axillary clearance indicated in breast cancer?
If the axillary lymph nodes are clinically involved
What does axillary clearance in breast cancer increase the risk of?
Chronic lymphoedema in that arm
When is radiotherapy used in breast cancer?
Following breast conserving surgery to reduce the risk of recurrence
Name three scenarios chemo is used in breast cancer
Neoadjuvant therapy - to shrink the tumour before surgery
Adjuvant chemo - after surgery to reduce recurrence
Treatment of metastatic or recurrent breast cancer
When is hormonal treatment indicated in breast cancer?
If the breast cancer is oestrogen receptor positive
Name two hormonal treatments for breast cancer
Tamoxifen
Aromatase inhibitors
What group of women is tamoxifen used in?
Premenopausal women
What group of women is aromatase inhibitors used in?
Post menopausal women
Name a aromatase inhibitor
Letrozole
How does tamoxifen treat breast cancer?
It blocks oestrogen receptors in breast tissue and stimulates them in the uterus and bones
Name one thing tamoxifen prevents and one it increases the risk of
Prevents osteoporosis
Increases risk of endometrial cancer
How do aromatase inhibitors treat breast cancer?
Aromatase converts androgens to oestrogen. After menopausal this is the primary source of oestrogen. Aromatase inhibitors block this process.
What options are there for breast reconstruction?
Breast implants
Flap reconstruction
What is flap reconstructions?
When tissue from another part of the body is used to reconstruct the breast
Why are women with PCOS at increased risk of endometrial cancer?
Normally after ovulation the corpus luteum releases progesterone. Women with PCOS ovulate infrequently/not at all -> insufficient progesterone. This means their endometrium proliferates in the presence of unopposed oestrogen -> endometrial hyperplasia -> rf for endometrial cancer
Give 2 options for reducing the risk of endometrial hyperplasia and cancer in PCOS
- Mirena coil - provides continuous endometrial protection
- Induce bleed every 3/4 months with COCP/cyclical progesterone