Reproductive system - Level 2.3 Flashcards
Epidemiology of cervical cancer?
- 3rd most common gynaecological cancer after uterus and ovary
- Most common cancer in women under 35
- Age peaks 25-34
Definition of CIN?
• Cervical intraepithelial neoplasia (CIN) precursor lesion for carcinoma of the cervix
o CIN 1 – disease confined to lower third of epithelium
o CIN 2 – disease confined to lower and middle thirds of epithelium
o CIN 3 – affecting full thickness
Classes of cervical cancer?
o Breeches epithelial basement membrane
o If deepest part is <5mm from surface of epithelium – micro-invasive
o If it extends beyond 5mm or wider than 7mm – invasive carcinoma
Types of cervical cancer?
- Squamous cell = 70%
- Adenocarcinoma = 15%
- Mixed = 15%
- Neuroendocrine tumour, clear cell carcinoma, glassy cell carcinoma, sarcoma botryoides, lympohoma = <1%
Spread of cervical cancer?
- Direct = Parametrium, vagina, bowel and bladder and then to the pelvic side wall.
- Lymphatic = parametrial nodes, internal, external and common illiac nodes, obturator nodes, pre-sacral and para-aortic nodes
- Ovarian spread is rare
- Haematological = liver and lungs
Risk factors of cervical cancer?
- Exposure to HPV (early first sexual experience, multiple partners, non-barrier contraception)
- COCP
- High parity
- Smoking
- Immunosuppression (esp. HIV and transplant patients)
Symptoms of cervical cancer?
Common symptoms
o Post-coital bleeding (PCB)
o Post-menopausal bleeding
o Vaginal discharge - blood stained, offensive, serous
Late Symptoms • Painless haematuria • Urinary frequency • Weight loss • Bowel disturbance • Fistula • Pain
Signs of cervical cancer?
o White or red patches on cervix
o Roughened hard cervix or ulcer +/- loss of fornices
o Fixed cervix if there is extension of the disease
When to refer of cervical cancer - postmenopausal?
o Refer all women urgently to gynaecology if suspicious, persistent vaginal discharge not explained
2-week gynaecology clinic if not on HRT and vaginal bleeding or persistent or unexplained vaginal bleeding after stopping HRT for 6 weeks
When to refer of cervical cancer - premenopausal?
Gynaecology clinic if persistent intermenstrual bleeding, post-coital bleeding, blood-stained discharge
2-week if negative pelvic exam, not had smear, >3 months, new symptoms
Investigations of cervical cancer?
o Colposcopy
Cervix visualised, transformation zone is identified and painted with acetic acid, taken up by neoplastic cells
Aceto-white areas identify abnormal areas and enable punch biopsy to be taken to diagnose histologically
Punch biopsies for histology (not LLETZ in cancer)
Irregular cervical surface, abnormal vessels dense aceto-white changes.
o Bloods - FBC, U&Es, LFTs
o Fitness for surgery- CXR, U&E, FBC, IV pyelogram
Staging investigations of cervical cancer?
o CT abdomen and pelvis o MRI pelvis o EUA (bimanual vaginal examination, cystoscopy, hysteroscopy, PV/PR examination)
Staging of cervical cancer?
• FIGO Staging
o 0 – no primary tumour
o Tisb – carcinoma in-situ (pre-invasive)
o 1 – confined to uterus
o 2 – Extended locally to upper 2/3 of vagina
o 3 – Spread to lower 1/3 of vagina +/- hydronephrosis
4 – spread to blader or rectum
Vaccinations of cervical cancer?
- Part of the NHS childhood vaccination programme – will include boys next academic year 2019/20
- Gardasil (Merck) – HPV 16, 18 + 6, 11 (used)
- Cervarix (GSK) – HPV 16, 18
Management of CIN1?
o If HPV +ve offer 6-month colposcopy and LLETZ if persistent
LLETZ – large loop excision of transformation zone, dine under LA with loop diathermy
Management of CIN2/3?
o Excised with LLETZ, smear at 6 months with high-risk HPV testing
o If negative, return to 3-year smears
o If abnormal, repeat assessment with colposcopy
Management of cervical cancer - Stage 1A1?
Stage 1A1 (<3mm depth)
o Local excision (radical trachelectomy, cervicectomy) or hysterectomy
Management of cervical cancer - Stage 1A2 & 1B1?
Stage 1A2 (<5mm depth) and 1B1 (<4cm diameter)
o Lymphadenectomy and if node negative, proceed to Wertheim’s hysterectomy
Excision of primary tumour with 1cm margin and en bloc resection of main pelvic lymph node areas
May involve – removing upper 1/3 of vagina and ligaments
Management of cervical cancer - Stage 1B2?
o Chemoradiotherapy (cisplatin) Involves external beam and brachytherapy o If negative lymph nodes, consider Wertheim’s hysterectomy
Management of cervical cancer - >Stage 2B?
o Combination chemoradiotherapy (cisplatin)
Involves external beam and brachytherapy
Management of cervical cancer - Stage 4B?
o Chemoradiotherapy (cisplatin) Involves external beam and brachytherapy o Palliative radiotherapy to control bleeding
Complications of Weirthem’s hysterectomy?
- Bleeding
- Infection
- DVT/PE
- Ureteric fistula
- Bladder dysfunction
- Lymphoedema
- Lymphocysts
Compications of radiotherapy for cervical cancer?
- Acute bowel and bladder dysfunction (tenesmus, mucositis, bleeding)
- 5% late bowel and bladder dysfunction (ulceration, strictures, bleeding, fistula formation)
- Vaginal stenosis, shortening and dryness
Follow up of cervical cancer?
- Patients are reviewed at 6 weeks post treatment, every 3-4 months for 1-2 years, annually for a total of 5 years