Table 1 Summary of clinical and sonographic results of n=62 patients with splenic rupture compared between subgroups of spontaneous and traumatic splenic rupture (SR) and with p-values.

	All patients	Spontaneous SR	Traumatic SR	p-value
Demographic and clinical data	n=62 (100%)	n=33	n=29
Age (average)	53.5 years	61.8 years	44 years	0.01
Indication for US investigation: Follow-up after primary CT diagnosis	43.5%	30.3%	58,6%	n.s.
Indication for US investigation: incidental	24.2%	36.4%	10,3%	0,02
Interventional therapy (surgery or interventional radiology)	41.3%	45.5%	34,4%	n.s.
Follow-up (alive 4 weeks after diagnosis)	80.6%	63..6%	100%	<0.001
Imaging data
Splenomegaly	71%	78.7%	62%	0.17
Value of CEUS data
Grade 4 (high-grade rupture) in B-mode US	6.5%	6.1%	6.9%	n.s.
Grade 4 (high-grade rupture) in CEUS	29%	33.3%	24.1%	n.s.
Value of CEUS for higher grading	69.4%	66.7%	72.4%	n.s
Value of CEUS for diagnosis	58.1%	51.5%	65.5%	n.s.
Value of CEUS for therapy	14.5%	15.2%	13.8%	n.s.