Table 1. Exams performed during period of 2020 and corresponding period of 2019, categorized by type.
| Periods | 2019 | 2020 | Increase/decrease | 
|---|---|---|---|
| First period* | |||
| Mammography | 5,844 | 948 | -83.8 | 
| Ultrasonography | 6,298 | 1,513 | -76.0 | 
| MRI | 478 | 141 | -70.5 | 
| Biopsies | 219 | 105 | -52.1 | 
| Total | 12,839 | 2,707 | -78.9 | 
| Second period* | |||
| Mammography | 10,379 | 9,891 | -4.7 | 
| Ultrasonography | 12,970 | 12,644 | -2.5 | 
| MRI | 1,003 | 1,051 | +4.8 | 
| Biopsies | 518 | 613 | +18.3 | 
| Total | 24,870 | 24,199 | -2.7 | 
Results expressed as n or %.
* First period corresponded to the first 90 days of social isolation (March 24 to June 21, 2020) due to COVID-19 pandemic. The second period corresponded to COVID-19 pandemic after the first 90 days of social isolation, by the end of the year (June 22 to December 31, 2020).
MRI: magnetic resonance imaging.