Study of prostate-specific antigen levels during salvage radiotherapy after prostate cancer surgery

BMC Urology

Table 3 Univariate analysis of biochemical failure in cases with a decline in PSA levels or PSA elevation

Factor	P- value of biochemical recurrence with PSA decline	P-value of biochemical recurrence with PSA elevation
Age	0.123	0.415
Initial PSA	0.656	0.0385
PSA before RT ≤ 0.3	0.964	0.153
PSA nadir Yes/No	0.191	0.155
PSAV	0.109	0.992
PSADT ≥ 90 or ≺90	0.0413	0.581
Period from post-operation to RT ≤ 3 years	0.408	0.544 (Only one case)
Gleason Score ≤ 7 or > 8	0.00325	0.219
SV1	0.101	0.00567
Ly1	0.302	0.737
V1	None (No V1 cases)	0.167
pn1	0.386 (Only one pn(-) case)	0.879
RM1	0.302	0.453
EPE1	0.849	0.123

Abbreviations: RT: radiotherapy, PSA: Prostate-Specific Antigen, PSADT: Prostate-Specific Antigen Doubling Time, PSAV: prostate-specific antigen velocity, Ly1: lymphatic invasion, pn1: perineural invasion, SV1: seminal vesicle invasion, V1: vessel invasion, EPE1: extraprostatic extension, RM1: resection margin

ISSN: 1471-2490