Background: To evaluate colposcopic biopsy results of patients with cervical cytological findings of atypical squamous cells of undetermined significance (ASC-US) and atypical squamous cells with high-grade lesions that cannot be excluded (ASC-H).
Materials And Methods: A retrospective evaluation of data from 358 patients, who had cervical cytological findings of ASC-US (n = 335) and ASC-H (n = 23), and had colposcopic assessments between 2005 and 2011.
Results: Cervical biopsy results of patients diagnosed with ASC-US cytology (n = 335) revealed cervical squamous cell carcinoma 0.9 % (n = 3) at biopsy, cervical intraepithelial neoplasia 3 (CIN 3) in 3.8 % (n = 13), cervical intraepithelial neoplasia 2 (CIN 2) in 1.1 % (n = 4), cervical intraepithelial neoplasia 1 (CIN 1) in 35.2% (n = 118), and benign lesions in 59 % (n = 197). Cervical biopsy results of patients diagnosed with ASC-H cytology (n = 23) revealed CIN 3 at biopsy in 39.3% (n = 9), CIN 2 in 21.7% (n = 5), CIN 1 in 26% (n = 6), carcinoma in situ in 8.7% (n = 2), and squamous cell cancer in one patient (4.3%).
Conclusion: The cytological diagnosis of ASC-US may lead to the diagnosis of cervical intraepithelial lesion of higher grades as well as cervical cancer and should be evaluated by colposcopic cervical biopsy.
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