Effect of misoprostol on type 3 transformation zone of the cervix among Cameroonian women

Background: Type 3 transformation zone (TZ) of the cervix has been shown to be associated with a four to five-fold increased risk of missed precancerous/cancerous lesions. The aim of this study was to evaluate the effect of intravaginal misoprostol on the TZ among women with Type 3 TZ in Cameroon. Materials and methods: A single dose of vaginal misoprostol (400 mcg or 600 mcg) was administered as part of the plan of care for women with Type 3 TZ during cervical cancer screening. The primary outcome was successful conversion from Type 3 TZ to Types 1 or 2 TZ. Descriptive analysis was performed using chi-square and Fisher's exact tests. Results: Among the 90 of 107 (84.2%) women who returned for re-evaluation of the cervix, 43 (47.8%, 95% CI: 0.36%-0.60%) had conversion of Type 3 TZ to Types 1 or 2. Women who received misoprostol 600 mcg were more likely to have their Type 3 TZs converted to Types 1 or 2 than women receiving 400 mcg (p = 0.037). Conclusion: Misoprostol converted approximately 50% of Type 3 TZ to Types 1 or 2 in Cameroon. Misoprostol is feasible in converting Type 3 TZ to Types 1 or 2 among Cameroonian women.