Cervex-Brush vs. spatula and Cytobrush. A cytohistologic evaluation

Area of Science:

• Gynecologic oncology
• Cervical cancer screening
• Cytopathology

Background:

• Cervical cancer screening relies on accurate cytologic diagnosis.
• Various devices exist for collecting cervical smears, each with potential differences in efficacy.
• Optimizing sample collection is crucial for early detection of cervical dysplasia.

Purpose of the Study:

• To compare the diagnostic efficacy of the Cervex-Brush and the spatula plus Cytobrush (S+C) for cervical smear collection.
• To evaluate the concordance between cytologic and histologic diagnoses for each device.

Main Methods:

• A randomized study involving 213 women undergoing laser ring biopsies.
• Cervical smears were collected using either the Cervex-Brush or S+C prior to biopsy.
• Cytologic diagnoses were compared against histologic findings from the biopsy specimen.

Main Results:

• Comparable concordance rates between cytology and histology were observed for both devices (54% Cervex-Brush, 42% S+C).
• Of 130 patients with moderate to advanced lesions, smear failures occurred in 13 cases (10 Cervex-Brush, 3 S+C), a difference not statistically significant.
• False negative smears were more frequent when endocervical cells were absent or in women aged 30-39.

Conclusions:

• The Cervex-Brush and S+C demonstrate comparable efficiency in collecting samples with dysplastic squamous cells.
• Factors other than the sampling device influence the representativeness of cervical smears and warrant further investigation.
• Improving cervical smear efficacy requires a comprehensive approach beyond just the collection instrument.