TABLE 5.

The accuracy of procedures varies depending on the aetiology – MRI

MR
			Aetiology							Total
			Cervical cancer	Rectal cancer	Inflammatory dermoid cysts	Crohn’s disease	Unknown	Postpartum	Ulcerous colitis
	Neg. (−)	Number	0	2	0	0	0	2	0	4
		%	0.0	50.0	0.0	0.0	0.0	100.0	0.0	16.7
	Pos. (+)	Number	1	2	1	9	2	0	5	20
		%	100.0	50.0	100.0	100.0	100.0	0.0	100.0	83.3
Total		Number	1	4	1	9	2	2	5	24
		%	100	100.0	100.0	100.0	100.0	100.0	100.0	100.0
			χ2=16.800	p=0.019