new athens, june2009cytodept.static.otenet.gr/1stseminar/presentations... · 2010. 9. 16. ·...
TRANSCRIPT
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LUIGI DI BONITO
U.C.O. Citodiagnostica e Istopatologia - Università di Trieste
Athens, June 2009
Cervical cancer screening in Trieste area
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Breast
26%
Colon-
rectum
10%Lung
8%
Stomach
7%
Ovary
4%
Corpus uteri
4%
Liver
4%
Pancreas
2%
Thyroid
2%
Others
19%
Esophagus
3%
Cervix uteri
11%
Invasive cervical cancer represents the second most
common malignancy among women in the world
Globocan 2002,
IARC, Lyon
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493.243 NEW CASES
273.505 DEATHS
Globocan 2002, IARC, Lyon
Invasive cervical cancer
Estimated cases in the world - year 2002
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Invasive cervical cancer:
80% of cases in developing countries
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10,3
19,1
4,0
11,2
0,0
2,0
4,0
6,0
8,0
10,0
12,0
14,0
16,0
18,0
20,0
Incidence Mortality
More developedcountriesLess developedcountries
Standardized rates on worldwide population 0-85+ (x100.000)
Invasive cervical cancer - year 2002
Globocan 2002, IARC, Lyon
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0
5
10
15
20
25
30
19841986
19881990
19921994
19961998
20002002
20042006
2008
Squamous carcinomas Adenocarcinomas
Frequency trends of invasive cervical
cancers observed in Trieste from 1984 to 2008
Squamous carcinoma has been decreasingAdenocarcinomas seem to be slightly on the rise …
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Cervical Screening has played an important role in
this decreasing
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In 1996 Italian National Oncologic
Commission delivered guidelines to
start Cervical Screening as part of
National Health Plan charging regions
to make it effective
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Osservatorio Nazionale Screening - VI rapporto
Centralized regional programme
Local health units based programme
Provinces based programme
Still organising (works in progress)
Active organised screening programmes started at
different times and with different organisations according
to the different regional realities
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… centralized
regional programme
since 1999
In our region “Friuli-Venezia Giulia”
located in the north eastern part of
the country it has been adopted …
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This programme is monitored by
SCREENING REGIONAL
AGENCY
Different Cytopathology labs involved:
ASS 1 - Triestina (Trieste)
ASS 2 - Isontina (Gorizia/Monfalcone)
ASS 3 - Alto Friuli
ASS 4 - Medio Friuli (Udine)
ASS 5 - Bassa Friulana (Palmanova)
ASS 6 - Friuli Occidentale
(Pordenone/Aviano)
Aviano
Monfalcone
Palmanova
42 SAMPLING CENTERS
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REGIONAL ORGANISATION REFLECTS NATIONAL MODEL
25 years 64 yearsPap-test
Every 3 years
FVG target population
330.000 women
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Regional registry office
Selection of target women
Invitations letter
Invitation letters issued by a regional
centralized computer based system
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0
10
20
30
40
50
60
70
1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
FVG Trieste
Compliance to screening invitation (%)
has been increasing during the different
“rounds”
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Percentage of target population women* with at least a cytological diagnosis in the past three years
Ideal rate > 80%
Acceptable rate > 65%
Friuli-Venezia Giulia 62,3%
Trieste 56,7%
* Women aged between 25and 64 years
POPULATION COVERAGE2005-2007 (III screening round)
Before 1999: 39,8% (30,1% in the general italian population)
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Conventional
smears have been
always adoptedx
HPV test
(since 2009)
In ASC-US
After conization
As far as sampling and laboratory issues…..
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Vol. 287 - 2002
From 1999 to 2007
For REPORTING …
Since 2008 with full respect for all the guidelines
Bethesda System 1988-91
BETHESDA SYSTEM 2001
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All the labs have a computerized reporting system
Centralized Regional data base are open to all
screening involved Cytopathology labs
Reporting times according to the programme:
Within 21 days from sampling
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Continuous monitoring of quality assurance
by Screening Regional Agency related to …
Sampling
Screening
… and to all further level steps
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“Diagnostic categories frequency control”
The most important quality indicators
monitored by the Regional Agency:
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Cyto-Histological reports comparison
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Percentage of HSIL lesions screening detected and histologically confirmed
DETECTION RATE (D.R.)
D.R. has been keeping costant from 1999 to 2007 with variations between 3.08 and 4.65 %o
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Regional Agency also organizes
different periodical training courses
to screening’s operators…
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…and it promotes periodical exchange of
sets of slides among laboratories
followed by collective discussion…
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… to get the highest
“Diagnostic reproducibility”
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SLO211 Kmq
Our Laboratory (the
only Anatomic
Pathology Lab)
covers all the
Trieste’s province
made up of 7
districts
Trieste’s Province
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Screening operators’ cultural growth
through “Peer Review”
Cyto-histological comparison is an essential part of
our daily routine because it contributes to …
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Screening’s
operators have the
possibility to see
where atypical
cells come from …
CIN 3
(Intraepithelial
Carcinoma)
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Keratinizing Invasive Squamous Carcinoma
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Cyto-histological comparison is daily performed
mainly for better management of discrepant cases
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CYTOLOGY HISTOLOGY
HG-SIL Negative
LG-SILIf the cytological review :
Confirms HG-SIL Excisional biopsy isperformed
JAMA, 2002; 287: 2120-2129
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Histology may outline a circumscribed
endoglandular squamous lesion not detected by
colposcopy ...
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… or a small sized lesion …
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… or an endocervical localized lesion
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Discrepant cases:
Can be also related to
overestimation of cytology
Real False Positives
Repair
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After Slide’s review it is very important …
Communication with
clinicians
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It is harder to
discover “False
negatives” in a short
time
They can reduce
screening’s efficacy
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91,3%
0,6%8,1%
CIN 1 CIN2 Concordant
In one of our old review of 1000 cases with
both cytology and histology performed in the
same day …
Di Bonito et al. Cancer 1993; 72:3002-6
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38
21
Sampling errors Missed lesions
35,6%
64,4%
Di Bonito et al. Cancer 1993; 72:3002-6
False negatives causes were due to
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Review of previous negative slides of positive
cases must be always performed!
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-
+
+
+
How can we evaluate Cervical Cancer
Screening’s effects on Trieste population ?
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Invasive Cervical Squamous CarcinomasTrieste, 1999-2008
102 new histological cases
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PatientFirst
diagnosis/After review
Clinics
81 years Atrophy/Atrophy Vaginal bleeding
28 years Hg-SIL/ Hg-SILPregnant woman; Histerectomy 9 months after diagnosis
61 years ASC/ASC-HDid not respond to second level exams call
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PAP TEST
Cervical cancer
At the moment in our reality one of the most
important risk factors for cervical cancer is not
taking a Pap test …
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…cervical squamous carcinoma can be
prevented by
The societyHaving or Starting an organised cervical cancer
screening with respect to quality assurance
The patientsJoining and following the screening programme
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Thanks for your attention!