BACKGROUND: Posterior fossa dural venous sinus @entity715 is a well-described complication of @entity542 , especially when @entity174 crosses the dural sinus grooves or in association with @entity548 . We have found that post-traumatic posterior fossa epidural @entity1410 compressing a dural venous sinus can mimic dural venous @entity715 . OBJECTIVE: To discuss the CT and MRI findings of @entity932 simulating @entity50 , to make radiologists aware of this important imaging pitfall. MATERIALS AND METHODS: We describe radiologic findings in four @entity1 in whom a posterior fossa @entity548 . Routine CT head and CT venography were obtained on Toshiba volume and helical CT scanners. MRI and MR venography were performed on a Philips scanner. RESULTS: In all cases there was medial displacement and compression of the posterior fossa dural venous sinuses without intraluminal @entity715 . The @entity548 was seen tracking along sinus grooves in the occipital bone, peeling the dura containing the sinuses from the calvarium and compressing the sinus, simulating @entity715 on axial CT views. CONCLUSION: Both @entity50 and @entity932 in @entity1 are well-described complications of @entity542 . Posterior fossa @entity548 can mimic a sinus @entity715 by compressing and displacing the sinuses. It is important to recognize this pitfall because treatment of a suspected @entity715 with anticoagulation can @entity548 .

XXXX simulating @entity50 : CT and MR findings.

@entity1 :: ('9606', 'Species') :: ['children'] @entity932 :: ('MESH:D020300', 'Disease') :: ['posterior fossa epidural hemorrhages'] @entity174 :: ('MESH:D050723', 'Disease') :: ['fracture'] @entity548 :: ('MESH:D006470', 'Disease') :: ['worsen epidural hemorrhage', 'epidural hemorrhage mimicked dural venous sinus thrombus', 'epidural hemorrhage'] @entity542 :: ('MESH:D006259', 'Disease') :: ['head trauma'] @entity1410 :: ('MESH:D006406', 'Disease') :: ['hematoma'] @entity715 :: ('MESH:D013927', 'Disease') :: ['thrombus', 'thrombosis'] @entity50 :: ('MESH:D012851', 'Disease') :: ['venous sinus thrombosis', 'sinus thrombosis']
@entity932 :: (MESH:D020300,Disease) :: ['Compression of the posterior fossa venous sinuses by epidural hemorrhage']
