The frequency of trichomonas vaginalis in pap smear and liquid-based cytology (SurePathTM) between 2013 and 2018 in a reference laboratory in Fortaleza, Brazil

Authors

  • José Eleutério Junior
  • Renata Mírian Nunes Eleutério
  • Maria Natalice Lima da Silva
  • Maiara Nunes Alexandre Marques

Keywords:

cytology, diagnosis, prevalence, Trichomonas vaginalis

Abstract

Introduction: Trichomonas vaginalis (Tv) is a parasite responsible for the most frequent non-viral sexually transmitted infection and causes more than 250 million new cases around the world each year. Frequently, Tv is identified in cervical cancer screening. Objective: To assess the frequency of Tv identified on cytology between 2013 and 2018 in a private Laboratory at Fortaleza, Brazil. Methods: Cases from the files of a laboratory in Fortaleza, Brazil, were searched for diagnoses of Tv on cytology (Pap smear and SurePathTM [SP]) between 2013 and 2018, and the frequency of infection in each year, as well as differences between the years, were calculated. A linear regression test was performed to analyze the relationship between time and infection with a 95% confidence interval. The research was approved by an ethics committee. Results: The mean age of the patients was 35.9 (+12.5) years in the Pap smear group and 33.4(+11.9) years in the liquid-based cytology group. Tv was diagnosed in 281 of 207,863 patients (0.14%) (113 [0.12%] in the Pap smear group and 168 [0.15%] in SP cytology). Assessing year by year differences, it was observed that Tv was identified on cytology in 36 of 33,193 in 2013 (0.1%) (Pap smear=19/ 19,734 [0.1%]; SP=17/ 13,459 [0.13%], 50 of 34,661 in 2014 (0.14%) (Pap smear=22/ 16,358 [0.13%]; SP=28/ 18,303 [0.15%]), 34 of 33,623 in 2015 (0.1%) (Pap smear=10/ 14,501 [0.07%]; SP=24/ 19,122 [0.13%]), 29 of 34,492 in 2016 (0.1%) (Pap smear=9/ 15,629 [0.06%]; SP=20/ 18,863 [0.1%]), 52 of 35,446 in 2017 (0.15%) (Pap smear=22/ 15,948 [0.14%]; SP=30/ 19,498 [0.15%], and 80 of 36,448 in 2018 (0.22%) (Pap smear=31/ 15,408 [0.2%]; SP=49/ 21,040 [0.23%]). Conclusion: There was a tendency towards increased frequency of Tv diagnosis in the gynecologic cytology group (Pap smear or SP), mainly in the last year, reflecting what is observed using more sensitive methods.

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Author Biographies

José Eleutério Junior

Department of Women’s, Children’s and Teen’s Health and Post-graduation Academic Master’s Degree in Pathology, Universidade Federal do Ceará – Fortaleza (CE), Brazil. Prof. Eleuterio Laboratory – Fortaleza (CE), Brazil.

Renata Mírian Nunes Eleutério

Prof. Eleuterio Laboratory – Fortaleza (CE), Brazil. Course of Biomedicine, Centro Universitário Christus – Fortaleza (CE), Brazil.

Maria Natalice Lima da Silva

Prof. Eleuterio Laboratory – Fortaleza (CE), Brazil.

Maiara Nunes Alexandre Marques

Prof. Eleuterio Laboratory – Fortaleza (CE), Brazil.

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Published

2019-09-16

How to Cite

1.
Eleutério Junior J, Eleutério RMN, Silva MNL da, Marques MNA. The frequency of trichomonas vaginalis in pap smear and liquid-based cytology (SurePathTM) between 2013 and 2018 in a reference laboratory in Fortaleza, Brazil. DST [Internet]. 2019 Sep. 16 [cited 2024 Jun. 16];31(3):79-8. Available from: https://bjstd.org/revista/article/view/862

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Section

Original Article