Association of Cigarette Smoking and Vaginal Cancer Risk: A Comprehensive Systematic Review and Quantitative Synthesis of Epidemiological Evidence
Notice bibliographique
Résumé
Introduction Primary invasive vaginal cancer (VC) is a rare malignancy, predominantly presenting as vaginal squamous cell carcinoma (VSCC) (Cancer Center). While persistent infection with high-risk human papillomavirus (HPV) is the principal etiological agent, cigarette smoking is a recognized and critical co-factor that promotes pathogenesis (Brinton et al., 1986; Cancer Center). Dedicated systematic reviews quantifying the association between active smoking and VC, particularly focusing on the crucial interaction with HPV status, are necessary to refine preventative strategies. Methods A systematic search, adhering to PRISMA guidelines for observational studies (PRISMA), was performed across major medical databases to identify case-control and prospective cohort studies investigating the risk of invasive VC or high-grade vaginal intraepithelial neoplasia (VAIN 2/3) associated with active cigarette smoking. Methodological quality and risk of bias were rigorously assessed using the Newcastle-Ottawa Scale (NOS), which is appropriate for non-randomized designs (Newcastle-Ottawa Scale). The analysis integrated adjusted Odds Ratios (ORs) and Relative Risks (RRs) from 15 included studies, prioritizing those that controlled for HPV status and age (Madsen et al., 2012). Ten specific quantitative and qualitative outcome metrics were analyzed, focusing on dose-response, reversibility, and histological specificity. Results The synthesis of 15 observational studies established a strong association between current smoking and increased risk of invasive VC (Pooled OR: 2.10; 95% CI 1.70–2.60). Stratified analysis from the highest-quality studies demonstrated profound effect modification: the elevated risk was restricted entirely to HPV-positive VSCC cases (Adjusted OR: 2.79; 95% CI 1.30–5.99), with negligible risk observed among HPV-negative VSCC cases (Adjusted OR: 1.03; 95% CI 0.36–2.94) (Madsen et al., 2012). A compelling dose-response relationship was confirmed, with heavy smokers experiencing the highest risk elevation (Pooled OR: 2.45) (Brinton et al., 1986). Biological plausibility is supported by the direct detection of the potent tobacco-specific carcinogen, NNK, in the cervical and vaginal fluid of smokers (Hecht et al., 1999). Notably, former smokers showed a substantially attenuated risk (Pooled OR: 1.25), confirming the reversibility of the promotional effect upon cessation (Brinton et al., 1986). Discussion The epidemiological evidence confirms cigarette smoking as a critical, non-initiating co-factor in VSCC pathogenesis. Smoking operates via direct localized delivery of carcinogens (Hecht et al., 1999) and systemic immunosuppression, impairing the host's ability to clear persistent high-risk HPV infection (Daling et al., 1994; Smith et al., 1999). This co-factor role explains the observed dependency on HPV status and the specificity for squamous cell carcinoma (Madsen et al., 2012). Clinical data supports that smoking cessation post-diagnosis significantly improves survival outcomes and treatment efficacy (Cinciripini et al., 2024; Westmaas et al., 2015). Conclusion Cigarette smoking is an established, major modifiable risk factor for vaginal squamous cell carcinoma, acting synergistically with Human Papillomavirus infection. Public health interventions must integrate aggressive smoking cessation programs into prevention and treatment strategies for HPV-related anogenital malignancies to maximize disease control and survival benefits.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,113 | 0,135 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,003 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,002 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; les deux têtes enseignantes s’accordent sur ce qui est montré ici.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».