OUTLINE-
1. INTRODUCTION
2. RISKFACTORS
3. PATHOLOGY
4. PATTERN OF SPREAD
5. CLINICAL MANIFESTATION
6. WORK UP
7. STAGING
8. TREATMENT
3.
INTRODUCTION-
• Vulvar carcinomais a rare malignancy.
• Represents <1% of all the cancers diagnosed in women & <5%of all gyanecologic
neoplasm.
• Age group- 6th
-7th
decade (median age 65year)
CLINICAL MANIFESTATION-
• M/C–Vulvar pruritis
vulvar swelling,lump,ulcer (single/multiple)
• m/c site-labia majora
• Pain,Discharge or Bleeding
• Urinary /Rectal symptoms
• very rare-erosive tumour growth from groin
On examination-uni/multifocal lesion
size
proximity to midline(middle/lateral)
involving urethra,clitoris,vagina ,anus
Complete pelvic assessement
Careful examination of inguinal lymph nodes
ANY LESION OF VULVA WARRANTS A
BIOPSY.
9.
Work-up-
1. HISTORY &PHYSICALEXAMINATION
2. ROUTINE BLOOD INVESTIGATION
CBC,RFT,LFT
VIRAL MARKERS (HIV TESTING)
CERVICAL HPV & CYTOLOGIGAL TESTING
3. IMAGING-
CXR –If abnormality suspected …..NCCT
Pelvic CT/MRI
PET-CT –for T2 or larger tumour or if metastasis is suspected in f/up 3-6
month to assess treatment response.
COLPOSCOPY &VULVOSCOPY
CYSTOSCOPY
10.
4. PATHOLOGICAL STUDIES-
PAPSMEAR –For cervical and vaginal cytology
IF LESION IS NOT VISIBLE- VULVOSCOPY WITH 3% ACETIC ACID
VISIBLE LESION-BIOPSY
DEPTH OF INVASION MEASURE-
11.
Staging-FIGO
• FIGO STAGE– DESCRIPTION
• I-TUMOR CONFINED TO THE VULVA &/OR PERINEUM
IA - TUMOR SIZE <2 CM OR STROMAL INVASION <1 mm
IB - TUMOR SIZE >2 CM OR STROMAL INVASION >1mm
• II-TUMOR OF ANY SIZE WITH EXTENSION TO LOWER ONE-THIRD OF URETHRA,
LOWER 1/3rd
VAGINA,LOWER 1/3rd
ANUS WITH NEGATIVE NODES
• III-TUMOR OF ANY SIZE WITH EXTENSION TO UPPER PART OF ADJACENT
PERINEAL STRUCTURES,OR WITH ANY NUMBER OF NON FIXED,NON ULCERATED
LYMPH NODE
IIIA - TUMOR OF ANY SIZE WITH DISEASE EXTENSION TO UPPER 2/3 rd OF
URETHRA ,VAGINA,BLADDER MUCOSA,RECTAL MUCOSA OR REGIONAL LYMPH
NODE ,METASTASIS <5 mm
IIIB - REGIONAL LYMPH NODE METASTASIS >5 mm
IIIC - REGIONAL LYMPH NODE METASTASIS WITH EXTRACAPSULAR SPREAD
12.
• IV-TUMOR OFANY SIZE FIXED TO BONE ,OR FIXED ,ULCERATED LYMPH NODE
METASTASIS OR DISTANT METASTASIS
IVA-DISEASE FIXED TO PELVIC BONE OR FIXED ULCERATED LYMPH NODE
IVB-DISTANT METASTASIS
NOTE- Regional refers to inguinal and femoral lymph nodes
Pelvic L.N. mets considerd as distant mets
Treatment options-
1.Surgery – Wide local excision
Radical vulvectomy + SLNB /LYMPHADENECTOMY
Exenteration
2.Radiotherapy-PRE-OPERATIVE RT
-ADJUVANT RT
-DEFINITIVE RT OR CHEMORADIATION
-PALLIATIVE RADIOTHERAPY
3.Systemic therapy –SINGLE AGENT OR MULTIPLE AGENT
13.
TREATMENT-
• EARLY STAGE-(Stagel & select stage ll)…..BIOPSY
Stage IA Stage lb or select stage ll
simple partial vulvectomy
lateral lesion central lesion
observation if margin
negative
If margin positive Radical partial vulvectomy and inguinofemoral LN
evaluation (SLNB) or iguinofemoral lymphadenctomy
14.
• LATERAL LESION-IPSILATERALINGUINOFEMORAL L.N.EVALUATION
SLNB OR I/L INGUINOFEMORAL LYMPHADENECTOMY
• CENTRAL LESION –BILATERAL INGUINOFEMORAL LYMPHADENECTOMY
SLNB OR B/L INGUINOFEMORAL LYMPHADENECTOMY
IN BOTH LESIONS ASSESSEMENT OF PRIMARY TUMOR AND NODAL SURGICAL
PATHOLOGY
ADJUVANT THERAPY BASED ON PRIMARY TUMOR RISK FACTORS AND
NODAL EVALUATION
15.
PRIMARY TUMOR RISKFACTORS
• MARGINS NEGATIVE POSITIVE MARGINS
OBSERAVATION OR ADJ. RE-EXCISION UNRESECTABLE
EBRT (based on other
risk factors)
NEGATIVE MARGIN POSITIVE ADJUVANT EBRT
MARGIN
Other tumor risk
factors-tumor close
margin,Tm
size,LVSI,DOI,Pattern of
invasion(spray/diffuse)
Locally advanced (LargerT2 ,T3;unresectable w/o removing proximal
urethra/bladder /anus)
• Radiologic imaging work-up
Radiographically Radiologically suspicious nodes
negative nodes (confined pelvic M1 ,LN disease)
INGUINOFEMORAL INGUINOFEMORAL LYMPHADENECTOMY NOT DONE
LYMPHADENECTOMY
PERFORMED CONSIDER FINE NEEDLE ASPIRATION FOR ENLARGED
NODE
EBRT+CONCURRENT CT
Larger T2 >4cm &/or involevement of
urethra,vagina or anus
18.
UNRESECTABLE NODES REGARDLESSOF T
STAGE-
• Radiological imaging to assess extent of disease
consider FNA for enlarged nodes
EBRT + CONCURRENT CT TO PRIMARY TUMOR/INGUINO FEMORAL
LNs ,PELVIC LNs
19.
METASTATIC DISEASE BEYONDPELVIS-
• any T,any N with M1 beyond pelvis
EBRT for locoregional control/symptom palliation
&/or
systemic therapy
or
Best supportive care
20.
ADJUVANT RADIOTHERAPY-
• Radiotherapyis often used in the treatment of patients of patients with vulvar cancer as
adjuvant following initial surgery.
• INDICATIONS FOR RT-
TO PRIMARY- POSITIVE MARGIN TO L.N.SITE- cL.N+
LVSI >2 pL.N+
CLOSE MARGIN(<8mm) ECE
DOI>5 mm
• Post op adjuvant therapy should be initiated as soon as adequate healing is achieved
preferably within 6-8 weeks.
TREATMENT VOLUME AND TECHNIQUE-
1.CONVENTIONAL RADIOTHERAPY (AP-PA FIELD)
2.3-D CONFORMAL /IMRT
TARGET VOLUME IS DECIDED BY BOTH PHYSICAL EXAMINATION AND IMAGING.
21.
CONVENTIONAL RADIOTHERAPY-
• AP-PAfields with the patient in the supine position are recommended for the
delivery of external beam.
• Medium or high energy photon beams are used to irradiated the field.
• Depending on whether the inguinofemoral lymph nodes &/or pelvic lymph nodes
are to be included in the radiation volume ,different field configuration may be
used.
• Although there are no data regarding scar recurrence, it is common practice to
include the inguinal node dissection scars in the radiation field.
22.
FIELD ARRANGEMENT-
• I)Use Wide AP that includes pelvic & inguinal areas &
Narrow PA covering only pelvis( spares femoral heads)
• The photon fields are weighted equally, and the
inguinal dose is supplemented by separate AP
electron fields matched to the pelvic field
• Bolus material should be used to ensure adequate
dose to the superficial portions of the groin
26.
II) Wide AP& Narrow PA,with a partial transmission central
block (in the AP field), (associated with high rate of central
recurrence in stage III& IV)
• The desired dose at a specified depth is delivered to the
inguinal nodes through the AP field.
• Advantages:
-Eliminates the dosimetric problems of photon/electron field
matching
-Decrease potential for daily setup variation
Disadvantage:
-Difficult to design of a precise partial transmission
block
27.
• III) MatchedAP/PA fields to include the primary & pelvic
nodes and treating the groins through separate anterior
electron fields.
• Advantage :
- relatively easy setup
• Disadvantage :
-Difficult to ensure an adequate dose at the match line,
particularly when the match line is over gross disease.
28.
3-D CONFORMAL TREATMENT-
•3-D Planning is essential to establish the location,extent and depth of the inguinal and
pelvic lymph nodes as well as the primary.
RT PLANNING
CT SIMULATION-
• SUPINE/FROG-LEG POSITION
frog-leg position may be used to reduce skin folds in the inguinal regions,though this may
be less important if IMRT is used.
• Advanced immobilisation devices such as cradle ,bubble wrap or bariatric slings may be
considered.
• Both oral and iv contrast
• Bladder and Bowel protocol fill
• Radio –opaque marker should be placed
• Customised bolus of 0.5 cm thickness for the vulvar region at simulation .
• Images taken from L2 to mid thigh with with slice thickness of 3mm
30.
Contouring-
Entire vulva/post-op bed
B/LInguinofemoral nodes
Pelvic lymph nodes
GTV :-All gross disease on physical examination and imaging
CTV PRIMARY:-
• GTV +1 cm including the entire vulva ,excluding uninvolved bone ,muscle and
adjacent organs
Include vagina if vaginal involvement
• If extensive urethral involvement include 2 cm of urethra proximal to primary
GTV
• CTV node-inguinal/pelvic nodes
31.
CTV TOTAL- CTVprimary plus CTV node (Inguinal,femoral and iliac blood
vessels can be used as surrogates for nodes & 7 mm margin around
vessels to define CTV-node)
PTV-CTV upto 1.5-2 cm margin
OARs –
BLADDER
BOWEL BEG
RECTUM
HEAD OF THE FEMUR
39.
RT doses
A) Vulvarprimary
Post operative
I) Margin negative=45-50 Gy (25-28 #,1.8 Gy/#)
II)Close margin= 54-60 Gy
III)Positive margin/microscopic residual=54-60GY
Definitive -60-70Gy(33-36 total fractions ,1.8 Gy/#)
40.
• Nodal region
I)Uninvolved nodal region- 45-50 Gy
II) Resected nodal region-50-55 Gy
III) (ECE) + : 54-64Gy
IV) Gross residual /LN unresected- 60-70 Gy
Once daily,1.8Gy /# ,5 times in a week. Breaks from
treatment should be minimized.
41.
Toxicity
• Vulvar skinreaction
• Urinary frequency and dysuria
• Proctitis and diarrhoea
• Late vulval fibrosis and atrophy
• Lymphedema (occur in 30% pts when
inguinofemoral surgery & RT are combined)
• Urethral stenosis as a late effect
• Femoral head necrosis -11% risk of necrosis at 5
yrs, if opposing AP/PA beams used in elderly pts