Risk factors for cervical cancer by histology

Area of Science:

• Oncology
• Epidemiology
• Gynecology

Background:

• Invasive cervical cancer (ICC) comprises various histologic types, primarily squamous cell carcinoma (SCC) and adenocarcinoma (AC).
• Understanding the distinct epidemiological profiles of ICC subtypes is crucial for targeted prevention and early detection strategies.

Purpose of the Study:

• To investigate and compare the risk factors associated with squamous cell cancers and adenocarcinomas of the invasive cervix.
• To identify specific etiological differences between ICC histologic types.

Main Methods:

• A case-control study was conducted in four Latin American countries.
• Analyses focused on 667 patients with SCC and 43 with AC, examining associations with sexual, reproductive, socioeconomic, and screening history.

Main Results:

• Squamous cell cancers showed high risks associated with multiple sexual partners, early intercourse, sexually transmitted diseases, multiple births, lack of Pap screening, HPV DNA detection, and lower education.
• Adenocarcinomas were less influenced by sexual, reproductive, or socioeconomic factors, but showed increased risk with oral contraceptive use and strong associations with lack of Pap screening and HPV DNA detection.
• Adenosquamous cancers showed similarities to SCC regarding sexual and sociodemographic risk factors.

Conclusions:

• Significant etiological differences exist between squamous cell and adenocarcinoma of the cervix.
• Further research with detailed pathology and HPV analysis is needed to elucidate these differences and inform public health interventions for cervical cancer prevention.