Table 2. Mean Apparent Diffusion Coefficient Values of Positive Inflammation Activity and Negative Inflammation Activity of Fistulas Within Groups of only Perianal Fistula and Fistula Accompanied by Abscess^a.

	ADC Values of PIA Fistulas		ADC Values of NIA Fistulas		P Value
	Mean ± SD (×10-3)	n	Mean ± SD (×10-3)	n
Fistulas With Abscess	1.371 ± 0.168	13	1.586 ± 0.136	4	0.036 b
Only Perianal Fistulas	1.289 ± 0.256	18	1.238 ± 0.217	21	0.507

^aAbbreviations: ADC, apparent diffusion coefficient; NIA, negative inflammation activity; PIA, positive inflammation activity.

^bSignificant difference.