title: Common variations of the lateral and occipital sinuses at the confluens sinuum.
abstract: A total of 192 retrograde jugular venographies were performed in 163 cases. The lateral and occipital sinus variations in the confluent sinuum were classified in five groups by Kalbag [21]. Additional variations of the lateral and occipital sinuses in the confluent sinuum were discovered in this study.
mesh_terms: D003392:Cranial Sinuses / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D004388:Dura Mater / Q000098:blood supply; D005539:Foramen Magnum / Q000033:anatomy & histology; D006801:Humans; D007601:Jugular Veins / Q000000981:diagnostic imaging; D009778:Occipital Lobe / Q000098:blood supply*; D010690:Phlebography; D012851:Sinus Thrombosis, Intracranial / Q000209:etiology