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Ginecología y obstetricia de México
Print version ISSN 0300-9041
Abstract
CASTILLO ZAMORA, Marcos Fidel; GOMEZ CORREA, Sandra Milena; VILLA ESPINOSA,, Angélica María and RESTREPO CASTRO, Olga Isabel. Prevalence and risk factors for anal intraepithelial neoplasia in patients with high- grade cervical intraepithelial lesion. Ginecol. obstet. Méx. [online]. 2024, vol.92, n.2, pp.60-68. Epub May 31, 2024. ISSN 0300-9041. https://doi.org/10.24245/gom.v92i2.8535.
OBJECTIVE:
To determine the prevalence of alterations in anal cytology, anal human papillomavirus infection, and anal intraepithelial neoplasia, and to explore the risk factors and associated serotypes in patients with high-grade cervical intraepithelial lesion, based on the hypothesis that this population is at higher risk for precancerous lesions or anal cancer.
MATERIALS AND METHODS:
Observational, descriptive, cross-sectional study, with analytical component, performed in patients diagnosed with high-grade cervical intraepithelial lesion (HG-CIL) in two health institutions: one private and one public in Bogota, visited between January 2017 and February 2018. A non-probabilistic sampling was performed, by convenience, with a sample calculated in 124 patients.
RESULTS:
119 participants were included, in 4 of them it was evidenced in the anal cytology, the finding of abnormal cells in the tissue lining the outside of the cervix. Fourteen abnormal anoscopies were found, giving a prevalence of anal intraepithelial neoplasia of 6.7%. Seven were low-grade anal intraepithelial neoplasia and one was high-grade. Anal HPV infection was detected in 45 participants (37.8%) and HR-HPV genotypes were detected in 29 participants (24.4%). More than 3 sexual partners, more than 3 children and being younger than 21 years before first pregnancy had a p-value < 0.05 conferring an increased risk of anal HPV infection.
CONCLUSION:
It is important to establish protocols in Colombia for the detection of anal intraepithelial neoplasia in high-risk groups, such as patients with cervical intraepithelial neoplasia or cervical cancer, and to promote training in high-resolution anoscopy in specialties related to the diagnosis of anogenital pathology.
Keywords : Papillomavirus infection; Uterine cervical neoplasms; Cervix uteri; Cytology, Sexual partners; Uterine cervical dysplasia; Anus neoplasms; Genotype.