Introduction: Cervical cancer is the second most frequent malignant disease in the Peruvian female population, and the Papanicolaou test is its main screening tool. However, the COVID-19 pandemic can hinder cervical cancer screening, reducing its scope. Objective: To analyze the decline of Papanicolaou-based cervical cancer screening due to COVID-19 in a specialized hospital in Lima. Methods: We designed a retrospective study (from 2015 to 2020) on 355 029 Papanicolaou smears at the Hospital Nacional Madre Niño San Bartolomé. T-test and one-way ANOVA were used to define differences in the study period and Ljung-Box test with ARIMA (1,0,0) model to describe and forecast monthly expected Papanicolaou smears for 2020. Results: Throughout the six years of the study, the average Papanicolaou smears was 59 171.5 ± 8898.7 per year. However, in 2020 only 16 273 (4.58%) Papanicolaou tests were...