Table 1.

Association between inflammation and histologic features in TURP specimens from the Swedish Watchful Waiting Cohort (n = 615)

Overall frequency, n (%)Frequency of patients positive for feature according to types of inflammation, atrophy, and PIN, n (%)
Moderate/severe chronic inflammationSimple atrophyPAHSACFPartial atrophyaPIN
Acute inflammation
 Yes84 (13.7)54 (64.3)319 (60.1)20 (23.8)6 (7.1)2 (2.4)13 (15.5)
 No531 (86.3)104 (19.59)46 (54.8)105 (19.8)32 (6.0)9 (1.7)67 (12.6)
P < 0.0001P = 0.36P = 0.39P = 0.69P = 0.65P = 0.47
Chronic inflammation
 Moderate/severe158 (25.7)92 (58.2)48 (30.4)13 (8.2)2 (1.3)21 (3.4)
 None/mild457 (74.3)273 (59.7)77 (16.9)25 (5.5)9 (2.0)59 (12.9)
P = 0.74P = 0.003P = 0.21P = 0.74P = 0.90
Simple atrophy
 Yes365 (59.3)58 (15.9)18 (4.9)7 (1.9)48 (13.2)
 No250 (40.7)67 (26.8)20 (8.0)4 (1.6)32 (12.8)
P = 0.001P = 0.12P = 0.99P = 0.90
PAH
 Yes125 (20.3)8 (6.4)2 (1.6)28 (22.4)
 No490 (79.7)30 (6.2)9 (1.8)52 (10.6)
P = 0.91P = 0.69P = 0.001
SACF
 Yes38 (6.2)3 (7.9)5 (13.2)
 No577 (93.8)8 (1.4)75 (13.0)
P = 0.03P = 0.98
Partial atrophy
 Yes11 (1.8)0 (0.0)
 No604 (98.2)80 (13.3)
P = 0.37
PIN
 Yes80 (13.0)
 No535 (87.0)
  • aDue to small cell counts, P values were estimated from a Fisher's exact test. All other P values from a χ2 test.