Presentation
Routine head CT due to first ever seizure.
Patient Data
Age: 40 years
Gender: Male
From the case:
Developmental venous anomaly (DVA)
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/45237/annotated_viewer_json?iframe=true\u0026lang=us"}
Noncontrast brain CT is normal.
Postcontrast CT reveals a large left frontal medullary vein with a characteristic "Medusa head" appearance origin draining cortically.
Case Discussion
A developmental venous anomaly (DVA) is a congenital malformation of veins that drain the normal brain. It is characterized by the caput medusae sign of veins draining into a single larger collecting vein.