Table 2.

MR Imaging Features of Granulomatous Prostatitis in 8 Patients

Case	Age (yrs)	PSA (ng/ml)	Vol (ml)	Shape	Location	ECE	SI of T2WI ( vs BM / vs OM)	SI of DWI ( vs Normal PZ)	Mean ADC	PI-RADS	Previous UTI?	Histology
1	64	10.1	64	Diffuse (≥50%), Cystic	TZ PZ	+	↓ / ↑	↑	-	5	+	NGP
2	54	4.0	71	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	600	5	+	NGP
3	46	5.5	36	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	604	5	+	NGP
4	65	6.4	32	Nodular	TZ PZ	+	↓ / ↑	↑	666	5	+	XGP
5	58	17.5	64	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	695	5	+	NGP
6	52	6.7	50	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	-	5	-	NGP
7	65	16.9	41	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	797	5	+	NGP
8	48	2.24	24	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	642	5	-	NGP
9	71	3.19	37	Nodular	PZ	+	↓ / ↑	↑	-	5	+	NGP
10	67	9.33	86	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	660	5	+	NGP
11	67	6.5	43	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	811	5	+	XGP
12	61	78.7	72	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	666	5	-	NGP
13	46	2.8	35	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	667	5	+	NGP
14	56	13.0	26	Diffuse (≥50%)	TZ PZ	-	↓ / ↑	↑	720	5	-	NGP
15	78	8.7	65	Diffuse (≥50%)	TZ PZ	+	↓ / ↑	↑	853	5	+	NGP
16	74	37.3	69	Nodular	PZ	+	↓ / ↑	↑	744	5	+	XGP

PSA = Prostate Specific Antigen, ECE = Extracapsular Extension, TZ = Transition Zone, PZ = Peripheral Zone, SI = Signal Intensity, T2WI = T₂ weighted2 weighted, BM = Bone Marrow, OM = Obturator Muscle, ADC = apparent diffusion coefficient, PI-RADS = Prostate Imaging Reporting and Data System, UTI = Urinary Tract Infection, NGP = Nonspecific Granulomatous Prostatitis, BCG-GP = Bacillus Calmette Guérin-induced Granulomatous Prostatitis, XGP = Xanthogranulomatous Prostatitis