Comparison of seldinger and trocar techniques in the percutaneous treatment of hydatid cysts

Table 1 Statistical evaluation comparison of the changes in cyst volume between trocar and seldinger techniques (Mann-Whitney U test)

Method	n	Mean rank	Lower and upper- median	Mann-Whitney U	P value	Difference
Trocar	50	50.23	-165.00 and 97.00
			61
				1236.5	0.384	None
Seldinger	56	55.42	-29.00 and 100.00
			70.5

Table 2 Association of the techniques used and rate of complications (χ² analysis)

		Trocar	Seldinger	Total	χ2	P value
Development of complications	Yes, n	3	10	13
	(%)	6.1	17.9	12.4
	No, n	47	46	93	3317	0.069
	(%)	93.9	82.1	87.6
Total	n	50	56	106
	(%)	100	100

Table 3 Association of the techniques used and rate of local recurrence (χ² analysis)

	Trocar	Seldinger	Total	χ2	P value
Local recurrence,
present, n	2	0	2
(%)	4	0	1.9
Local recurrence,
none, n	48	56	104
(%)	96	100	98.1	2330	0.215
Total,
n	50	56	106
(%)	100	100	100

Table 4 Association of the techniques used and rate of secondary dissemination (χ² analysis)

	Trocar	Seldinger	Total	χ2	P value
Secondary dissemination, present, n (%)	0 0	1 1.8	1 1
Secondary dissemination, none, n (%)	50 100	55 98.2	105 99	0.883	0.533
Total, n (%)	50 100	56 100	106 100