Table 1.

Timetable for follow-up of patients on active surveillance (PRIAS protocol)

Year	1					2				3		4		5		6		7
Month	0a	3	6	9	12	15	18	21	24	30	36	42	48	54	60	66	72	78	84
PSA	×	×	×	×	×	×	×	×	×	×	×	×	×	×	×	×	×	×	×
MRI + targeted biopsy	×	×b			×								×						×
Systematic biopsy	×				×								×						×

MRI = magnetic resonance imaging; PRIAS = Prostate Cancer International Active Surveillance; PSA = prostate-specific antigen.

^aTime of diagnosis.

^bMRI after 3 mo with targeted biopsies only if no MRI is used before diagnosis. Repeat MRI + biopsies after 1, 4, 7, and 10 yr and subsequently every 5 yr.