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TABLE 2: Results of the control study
Finding Patients with CNS LCH Control Subjects P Value
No Treatment With Treatment All Oncology Controls Diverse Controls All
Sinus/mastoid opacification 11/19 (58%) 25/46 (54%) 36/65 (55%) 7/27 (26%) 4/28 (14%) 11/55 (25%) .004
Dilated VRS 9/11 (81%) 21/32 (66%) 30/43 (70%) 8/27 (30%) 7/28 (25%) 15/55 (27%) .001

Finding	Patients with CNS LCH			Control Subjects			P Value
Finding	No Treatment	With Treatment	All	Oncology Controls	Diverse Controls	All	P Value
Sinus/mastoid opacification	11/19 (58%)	25/46 (54%)	36/65 (55%)	7/27 (26%)	4/28 (14%)	11/55 (25%)	.004
Dilated VRS	9/11 (81%)	21/32 (66%)	30/43 (70%)	8/27 (30%)	7/28 (25%)	15/55 (27%)	.001