Gyn-Onc Flashcards
(156 cards)
Preinvasive neoplastic disease of the vulva is divided into two categories
squamous
- vulvar intraepithelial neoplasia
nonsquamous intraepithelial neoplasias
- Paget disease
- melanoma in situ
Vulvar intraepithelial neoplasia
- definition
= cellular atypia contained within the epithelium
Characterized by:
- loss of epithelial cell maturation,
- cellular crowding,
- nuclear hyperchromatosis,
- abnormal mitosis
How is the lesion of VIN determined?
Mild - severe dysplasia based on depth of epithelial involvement
VIN 1 = koilocytic atypia
VIN 2 &3 = Usual VIN vs Differentiated VIN
How many % of pts with VIN will have coexisting invasive carcionma (penetrated BM)
20%
Risk factors for VIN
HPV 16, 18
- 80-90% VIN will have DNA fragments from HPV
- 60% of women w/ VIN will have cervical neoplasia too
Cigarette smoking
Immunodeficiency
Immunosuppression
Most VIN are in premenopausal women (75%)
- median age = 40 yo
- incidence decreases as age increases
VIN has 2 distinct forms - what are they?
Younger premenopausal women
- more likely to have more aggressive multifocal lesions that rapidly become invasive and are associated with HPV 75% to 100% of the time.
Older postmenopausal women
- more likely to involve focal lesions that are slow to become invasive
- not typically associated with HPV
Sx of VIN
- vulvar pruritus or vulvar irritation
- palpable abnormality,
- perineal or perianal burning,
- dysuria
Often, these women would have been examined several times and diagnosed with candidiasis, but experience no relief of symptoms with antifungal treatments or topical steroids.
Any time a pruritic area of the vulva does not respond to topical antifungal creams - what should be done?
further evaluation with vulvar biopsy should be undertaken
Tx VIN
VIN + no evidence of invasion
- wide local excision
- disease free margin of at least 5-10 mm
VIN + multifocal disease
- simple vulvectomy or skinning vulvectomy
- use split thickness grafts to replace excised lesions
- can use laser vaporization to eradicate multifocal lesions
- younger –> 5-FU topical and imiquod but only 40-50% effective
Follow up for VIN
Recurrence 18-55%
- more common w/ multifocal lesions, mod-severe dysplasia, + margins
Colposcopy of entire genital tract q6 months for 2 years
- after 2 years, do this yearly
Paget disease of the vulva - age of presentation
50-80 yo
Is extramammary paget disease of the invasive? Does it recurr?
NOT invasive usually
Tends to recurr locally
Only 20% of pts w/ pagets NOT of breast will have underlying adenocarcionma
- mets common with this
Dx Paget disease of vulva
Lesions consistent w/ chronic inflammatory changes
Usually there’s a long standing pruritus that accompanies velvety red lesions of skin —> eczematous and scar into white plaques
Usually > 60 yo
Tx paget disease of vulva
Wide local excision if not invasion
BE CAREFUL! It is fatal if it spreads to lymph nodes
1 vulvar cancer
Squamous cell carcionma
Most are on labia majora
Spread of vulvar cancer is via
lymphatics –> superficial inguinal lymph nodes
Vulvar carcinoma accounts for what % of GYN cancers?
5%
Staging of vulvar carcionma
Surgically staged
- radical local excision + inguino-femoral LN dissection
- if superficial (< 1 mm) and unilateral disease, can forego unilateral LN dissection
Tx vulvar carcionma
For all
- wide radical local excision
- LN dissection
+
Stage 1
- ipsilateral lymphadenectomy
Stage 2
- modified radial vulvectomy
- resection LN
Stage 3 + 4
- radical vulvectomy
Tx Melanoma of the vulva
.
occurs predominantly in postmenopausal Caucasians
It can be treated similarly to SCC, except that lymphadenectomy is rarely performed
Depth of invasion is the key prognostic factor.
Once the melanoma has metastasized, the mortality rate is near 100%
The 5-year survival rate for all patients after surgical treatment of invasive SCC of vulva is approximately
75%
The most important prognostic factor is the number of positive inguinal lymph nodes
Vaginal intraepithelial neoplasia (VAIN) is a
premalignant lesion similar to that of the vulva and cervix.
However, VAIN is much less common than either VIN or CIN.
Dx VAIN
Usually asymptomatic
- if sx: vaginal d/c or postcoital spotting, abnl pap smear
- suspicion of vaginal neoplasia should be raised in patients with persistently abnormal Pap smears but no cervical neoplasia detected on colposcopy or cervical biopsy.
- Pts s/p hysterectomy for a history of high grade CIN should continue to have annual Pap smears to screen for VAIN until three consecutive negative Pap tests have been obtained
- VAIN can be diagnosed with a thorough colposcopy of the cervix (if present) and upper vagina using both acetic acid and Lugol’s solution
Tx VAIN
- local excision or laser ablation
Intravaginal 5-FU useful for tx pts w/ multifocal lesions and immunosuppression