Detection of transformation zone cells in liquid-based cytology and its comparison with conventional smears

The impact of transformation zone representation on the frequency of abnormal cervical cytological results

OBJECTIVE

To compare the frequency of abnormal cervical cytological results with and without representation of the transformation zone (TZ) in a medium-sized city in Brazil according to the Bethesda categorization.

METHODS

We performed an analytical observational study evaluating cytological results over 15 years from conventional smears collected within the Public Brazilian Health System in Araçatuba, Brazil. Tests were stratified by age and cytological result according to Brazilian guidelines and the Bethesda System.

RESULTS

There were 261,881 examinations, 159,251 with and 102,630 without TZ representation. The global frequency of abnormal results was higher in smears with TZ representation (crude odds ratio [OR] 4.03; 95% confidence interval [CI] [3.71-4.38]). Considering only women between 25 and 64 years (the target of the national guidelines), there were higher results for high-grade squamous intraepithelial lesions (OR 11.54; 95% CI 6.74-19.78), low-grade squamous intraepithelial lesions (OR 2.82; 95% CI 2.17-3.67) atypical squamous cell in which high-grade intraepithelial lesion cannot be excluded (OR 6.90; 95% CI 4.91-9.66) and atypical squamous cell of undetermined significance (OR 3.53; 95% CI 3.11-4.01) among cases with TZ representation.

CONCLUSION

Samples with TZ representation were associated with higher rates of abnormal results. Health professionals should be regularly trained to understand the weakness of cytological examinations when the TZ is not represented, especially in developing countries.

Health outcomes in women attending with clinical guideline PROGYNE to a primary care center for cervical cancer prevention

AIM

The objective of the current study was to analyze the health outcomes of women attending with a clinical guideline to consultations for cervical cancer (CC) prevention in a primary care center.

METHODS

A cross-sectional design was used, and data were collected from March to July 2016 with a sample of 87 women in Fortaleza, Brazil.

RESULTS

The following correlations were found: previous history of sexually transmitted infection (p = 0.025), women who used oral contraceptives (p = 0.035), and undergo the Papanicolaou test annually; having black skin color (p = 0.031) and attending to the first gynecological consultation; being single (p = 0.031), family history of cancer (p < 0.001), and undergoing the first Papanicolaou test within the first 3 years of sexual activity; age up to 30 years and positive colposcopy (p = 0.027); and being single and positive colposcopy (p = 0.021). CC was characterized by the presence of intraepithelial lesion detected on colposcopy (gold standard). Receiver operating characteristic curves were used to evaluate the diagnostic accuracy of visual inspection with Lugol's iodine, digital cervicography, and Papanicolaou test. The area under the curve values were as follows: digital cervicography: 0.558, p = 0.509; Lugol's iodine: 0.491, p = 0.919; and Papanicolaou test: 0.697, p = 0.024.

CONCLUSION

Colposcopy in primary care provided a faster diagnosis of pre-cancerous lesions. Understanding the health outcomes of women who underwent consultations for CC prevention, as well as the screening and diagnosis methods used, is essential to the service and national health system of the less developed countries.