2. Impact of Cervical Cancer
• Morbidity
– Global prevalence: ~2.3 million
– Global incidence: ~500,000
– Globally, cervical cancer is second to breast cancer as
the leading cause of cancer in women.
• Mortality
– 3rd most common cause of overall female cancer-
related mortality worldwide
1. World Health Organization. Geneva, Switzerland: World Health Organization; 2003:1–74. 2. Ferlay J, Bray F, Pisani P, Parkin
DM. Lyon, France: IARC Press; 2004.
3. Facts and Figures
• The incidence has dramatically decreased from
– 32 cases per 100,000 in the 1940s to
– 8 cases per 100,000 in the 1990s.
• Mortality declined 45 % between 1970s and
1990s, while incidence declined 43.3 %
6. PAP TEST
• What is a Pap Smear ?
• The cervical transformation zone.
• All cervical intraepithelial neoplasias (CIN)
arise within the transformation zone of the
cervix.
7. PATIENT INSTRUCTION
• No intercourse during the 24 hours prior to the
test
• No douching during the 24 hours prior to the
test
9. Technique
• Visualize entire cervix if possible
• Carefully remove any obscuring discharge
• Sample ectocervix first with spatula
• Sample endocervix with gentle cytobrush
rotation
• Apply material uniformly to slide
• Fix rapidly with spray or liquid fixative
10. Technique
• Hold spray fixative 10 inches away from slide
• Collect cells before bimanual exam
• Avoid contamination with lubricant
• Test for GC and Chlamydia after pap smear
11. INFORMATION REQUIRED
• Patient name
• Patient age
• Last menstrual period
• History of hormone use
• IUD
• Previous abnormal Pap smears
• Relevant clinical information- e.g., abnormal
bleeding, discharge, pelvic pain, etc.
12. Specimen Interpretation
• Requires a well-trained and experienced
cytotechnologist
• Steps to reduce laboratory errors
– 10 % Rescreening.
– Limits in workload.
13. Advances in Specimen Collection and
Interpretation
• Fluid-Based (Monolayer) Technology
(ThinPrep and Autocyte PREP)
• Neural Networks
( PAPNET and the AutoPap 300 QC)
• HPV Genotyping
( Digene Hybrid Capture® HPV DNA Test )
• Optoelectronic screening
(Polarprobe)
15. Questions
• When should screening begin?
• What is the optimal frequency of cervical
cytology screening?
• At what age is it appropriate to recommend
discontinuing screening?
16. The 2001 Bethesda System
• More than 400 cytopathologists,
cytotechnologists, histopathologists, family
practitioners, gynecologists, public health
physicians, epidemiologists, and attorneys
participated in the workshop, which was
convened by the NCI.
• Cosponsored by 44 professional societies.
• More than 20 countries were represented.
17. THE 2001 BETHESDA SYSTEM
Terminology for Reporting Results of Cervical Cytology
• Specimen Adequacy
• General Categorization (Optional)
• Interpretation/Result
• Automated Review and Ancillary Testing
• Educational Notes and Suggestions (Optional)
18. SPECIMEN ADEQUACY
• Satisfactory for evaluation
– describe presence or absence of transformation zone
component and any other quality indicators, e.g., partially
obscuring blood, inflammation, etc.)
• Unsatisfactory for evaluation . . . (specify reason)
– Specimen rejected/not processed (specify reason)
– Specimen processed and examined, but unsatisfactory for
evaluation of epithelial abnormality because of (specify
reason……)
19. • GENERAL CATEGORIZATION (optional)
– Negative for Intraepithelial Lesion or Malignancy
– Epithelial Cell Abnormality: See Interpretation/Result (specify
squamous or glandular as appropriate)
– Other: See Interpretation/Result
• AUTOMATED REVIEW
– If case examined by automated device, specify device and result.
• ANCILLARY TESTING
– Provide a brief description of the test methods and report the result so
that it is easily understood by the clinician.
20. INTERPRETATION/RESULT
• Negative for Intraepithelial Lesion or Malignancy
– Organisms
• Trichomonas vaginalis
• Fungal organisms morphologically consistent with
Candida species
• Shift in flora suggestive of bacterial vaginosis
• Bacteria morphologically consistent with Actinomyces
species
• Cellular changes consistent with herpes simplex virus
21. INTERPRETATION/RESULT (Cont.)
• Negative for Intraepithelial Lesion or Malignancy
– Other non-neoplastic findings (Optional to report; list not
comprehensive)
• Reactive cellular changes associated with
– Inflammation
– Radiation
– Intrauterine contraceptive device
• Glandular cells status post hysterectomy
• Atrophy
23. INTERPRETATION/RESULT (Cont.)
– Glandular cell
• Atypical glandular cells (AGC) (specify endocervical,
endometrial, or not otherwise specified)
• Atypical glandular cells, favor neoplastic (specify
endocervical or not otherwise specified)
• Endocervical adenocarcinoma in situ (AIS)
• Adenocarcinoma
– Endocervical
– Endometrial
– Extrauterine
– Not otherwise specified (NOS)
24. THE WHO AND BETHESDA SYSTEM
TERMINOLOGY
WHO histological terms Bethesda Cytological Terms
CIN 1/ Mild Dysplasia LSIL
CIN 2 / Moderate Dysplasia HSIL
CIN 3 / Severe Dysplasia HSIL
CIN 3 / Carcinoma in Situ HSIL
25. Abnormal Pap test – How common is it?
12,200
cancers
300,000 HSIL
1.25 million LSIL
2-3 million ASC
50-60 million women screened
26. ASC frequency and association with
CIN
§ Least reproducible of cytological categories
§ Average frequency of ASC 4.4 %
§ ASC associated with CIN 2/3 5 - 17 %
§ ASC-H associated with CIN 2/3 24 - 94 %
§ ASC associated with cervical ca 0.1 - 0.2 %
27. Repeat Cytology
@ 6 mos X 2 HPV DNA Testing
Colposcopy
“When liquid-based cytology is used, or when co-collection for HPV DNA
testing can be done, "reflex" HPV DNA testing is the preferred approach”
ASCCP Management Guidelines ASC-US
Wright TC Jr, Cox JT, Massad LS, Twiggs LB, Wilkinson EJ, for 2001 ASCCP-Sponsored Consensus
Conference. 2001 Consensus Guidelines for the management of women with cervical cytological abnormalities.
JAMA. 2002;287:2120-2129.
28. Patient Management Using HPV Triage
ASCUS
HPV TEST
Low Risk + or HPV– HPV +
Repeat Pap and/or HPV
Test in 12 mo. or return to
routine screening at
discretion of clinician
COLPOSCOPY
29. Recommended Management of Women
with ASC-US
SPECIAL POPULATIONS
• Postmenopausal women with ASC-US should be
managed in the same manner as women in the general
population.
• Immunosuppressed women with ASC-US should be
managed in the same manner as women in the general
population.
30. Recommended Management of Women
with ASC-US
SPECIAL POPULATIONS
• Adolescent women (20 years and younger)
– Should not be screened unless they have been sexually active for 3
years
– With ASC-US, follow-up with annual cytological testing is
recommended.
– At the 24 month follow-up, those with an ASC-US or greater result
should be referred to colposcopy.
31. Recommended Management of Women
with ASC-US
SPECIAL POPULATIONS
• Pregnancy
Ø Mgt options (over age 20) same as nonpregnant,
with the exception that it is acceptable to defer
colposcopy until at least 6 weeks postpartum.
33. Low-grade Squamous Intraepithelial
Lesion (LSIL)
• Cytological diagnosis of LSIL, 2% of women
• 2nd most common abnormal cytology report (ASC-US is most
common)
• 85% with LSIL, have biopsy-confirmed CIN
– 18% CIN II-III
– .03% invasive cervical cancer
• LSIL is highly predictive of HPV infection
35. High-grade Squamous Intraepithelial
Lesion (HSIL)
• 0.7 % of cytology reports
• 75% will have biopsy-confirmed CIN II-III
• 1-2 % invasive Cervical Ca
• An immediate Leep or Colposcopy/ECC is
acceptable (except in pregnancy or
adolescents)
37. Managing Women with HSIL
UNACCEPTABLE STRATEGIES
• Ablation is unacceptable in the following
circumstances:
Ø Colposcopy has not been performed
Ø CIN II-III is not identified histologically
Ø ECC identifies CIN of any grade
• Triage utilizing either of the following is
unacceptable
Ø Repeat cytology
Ø HPV DNA testing
38. AGC frequency and association with
CIN
• Mean frequency of AGC 0.4 %
• Associated CIN 1, 2, or 3 9 - 54 %
• AGC assoc. with AIS 8 %
• AGC assoc. with carcinoma 3 - 17 %
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Jones and Novis. Arch Pathol Lab Med 2000;124:665
Ronnett et al, Hum Pathol 1999;30:816
Veljovich et al, Am J Obstet Gynceol 1998;179:382
Soofer and Sidaway Cancer 2000;90:207