BACKGROUND AND PURPOSE: Although @entity10 is the most common symptom in @entity49 , 5% to 30% of @entity1 do not report @entity10 at baseline. Characteristics of these @entity1 have not been investigated. METHODS: In post hoc analysis of the International Study on Cerebral Vein and @entity50 study, @entity1 who might not have been able to report @entity10 ( @entity2026 , stupor, @entity772 , or @entity146 ) were excluded. RESULTS: Three hundred eighty-two of the original 624 @entity1 (61%) were included, of whom 38 (10%) did not report @entity10 at baseline. @entity1 without @entity10 were older (mean age, 45 versus 37; P=0.001) and less often female (63% versus 77%; P=0.06). Paresis (42% versus 27%; P=0.05) and @entity410 (58% versus 32%; P=0.001) were more common in @entity1 without @entity10 , whereas @entity1829 was less common (8% versus 35%; P=0.001). Isolated @entity715 (16% versus 2%; P=0.001), @entity75 (66% versus 46%; P=0.02), and @entity5 (18% versus 6%; P=0.009) were more common among @entity1 without @entity10 . Outcome at last follow-up was worse in @entity1 without @entity10 (modified Rankin Scale, 0-1; 76% versus 89%; P=0.04; mortality, 13% versus 5%; P=0.05), but after adjustment for prognostic variables, @entity10 was not an independent predictor of outcome. CONCLUSIONS: @entity1 with @entity49 but without @entity10 are a heterogeneous subgroup, in which older @entity1 , @entity1 , and some associated conditions are over-represented. @entity1 without @entity10 had a worse clinical outcome, but after adjustment for imbalances, @entity10 was not an independent predictor of outcome.

@entity49 in the absence of XXXX .

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'men'] @entity410 :: ('MESH:D012640', 'Disease') :: ['seizures'] @entity146 :: ('MESH:D001523', 'Disease') :: ['mental status disorder'] @entity75 :: ('MESH:D001927', 'Disease') :: ['brain parenchymal lesions'] @entity5 :: ('MESH:D009369', 'Disease') :: ['malignancies'] @entity49 :: ('MESH:D019851', 'Disease') :: ['cerebral venous thrombosis'] @entity772 :: ('MESH:D003128', 'Disease') :: ['coma'] @entity2026 :: ('MESH:D001037', 'Disease') :: ['aphasia'] @entity1829 :: ('MESH:D010211', 'Disease') :: ['papilledema'] @entity715 :: ('MESH:D013927', 'Disease') :: ['cortical vein thrombosis'] @entity10 :: ('MESH:D006261', 'Disease') :: ['headache'] @entity50 :: ('MESH:D012851', 'Disease') :: ['Dural Sinus Thrombosis']
@entity10 :: (MESH:D006261,Disease) :: ['headache']
