Acta cytologica · 2008
Atypical squamous cells, cannot exclude high-grade squamous intraepithelial lesion: cytohistologic correlation study with diagnostic pitfalls.
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Mokhtar Ghadeer A, Delatour Nicolas L D Roustan, Assiri Ali H, Gilliatt M Angela, Senterman Mary, Islam Shahidul
Аннотация
OBJECTIVE: In the current study, we explore the diagnostic parameters and pitfalls in the follow-up of 123 cases of Pap smears diagnosed as high-grade atypical squamous cells (ASC-H) at our institution.
STUDY DESIGN: A computer database search was performed from the archives of the Ottawa Hospital Cytopathology Service for cases diagnosed with ASC-H between January 2003 and July 2005.
RESULTS: Follow-up of the 123 cases of ASC-H showed high grade squamous intraepithelial lesion (HSIL) in 73 patients (59.4%), low grade squamous intraepithelial lesion (LSIL) in 11 (8.9%), immature squamous metaplasia in 23 (18.7%), reactive squamous cell changes in 12 (9.8%), benign glandular lesions (endocervical atypia, degenerated glandular cells) in 2 (1.6%) and atrophy in 2 (1.6%). In our study, 83 patients were younger than 40 years (67.4%), with biopsy-proven HSIL found in 54 patients (65.1%). The remaining 40 patients (32.6%) were older than 40 years of age, and follow-up biopsies showed HSIL in 19 patients (47.5%).
CONCLUSION: In our study, 59.4% of the cases that were diagnosed cytologically as ASC-H were found to have HSIL on subsequent biopsies. This correlation was stronger in patients below the age of 40 years (65.1% vs. 47.5%). The cytopathologic feature most strongly associated with HSIL was the presence of coarse nuclear chromatin (84%).
STUDY DESIGN: A computer database search was performed from the archives of the Ottawa Hospital Cytopathology Service for cases diagnosed with ASC-H between January 2003 and July 2005.
RESULTS: Follow-up of the 123 cases of ASC-H showed high grade squamous intraepithelial lesion (HSIL) in 73 patients (59.4%), low grade squamous intraepithelial lesion (LSIL) in 11 (8.9%), immature squamous metaplasia in 23 (18.7%), reactive squamous cell changes in 12 (9.8%), benign glandular lesions (endocervical atypia, degenerated glandular cells) in 2 (1.6%) and atrophy in 2 (1.6%). In our study, 83 patients were younger than 40 years (67.4%), with biopsy-proven HSIL found in 54 patients (65.1%). The remaining 40 patients (32.6%) were older than 40 years of age, and follow-up biopsies showed HSIL in 19 patients (47.5%).
CONCLUSION: In our study, 59.4% of the cases that were diagnosed cytologically as ASC-H were found to have HSIL on subsequent biopsies. This correlation was stronger in patients below the age of 40 years (65.1% vs. 47.5%). The cytopathologic feature most strongly associated with HSIL was the presence of coarse nuclear chromatin (84%).