title: Anatomic relationship between arachnoid granulations in the transverse sinus and the termination of the vein of Labbé: an angiographic study.
abstract: We studied the anatomic relationship between arachnoid granulations in the transverse sinus and the termination of the vein of Labbé in 57 consecutive angiograms. Patients with pathology in intracranial venous structures or with inadequate image quality of the venous system were excluded. Arachnoid granulations were found in 12 of the 57 patients (21.1%), always at the junction of the vein of Labbé and the transverse sinus; the vein of Labbé was present in 55 patients (96.5%), most often without associated arachnoid granulations; the latter, however, were not observed in the absence of a vein of Labbé. This study confirms the close, constant anatomic relationship between arachnoid granulations in the transverse sinus and the termination of the vein of Labbé. This observation may help to differentiate arachnoid granulations from pathologic conditions involving the transverse sinus such as dural sinus thrombosis. The constant character of this relationship suggests a developmental role of afferent veins in the formation of arachnoid granulations.
authors.affiliation: Department of Radiology and Radiological Sciences, Johns Hopkins Hospital, 600 North Wolfe Street Baltimore, MD 21287, USA. gailloud@rad.jhu.edu
authors.forename: P
authors.initials: P
authors.lastname: Gailloud
authors.forename: M
authors.initials: M
authors.lastname: Muster
authors.forename: N
authors.initials: N
authors.lastname: Khaw
authors.forename: J B
authors.initials: JB
authors.lastname: Martin
authors.forename: K J
authors.initials: KJ
authors.lastname: Murphy
authors.forename: J H
authors.initials: JH
authors.lastname: Fasel
authors.forename: D A
authors.initials: DA
authors.lastname: Rüfenacht
mesh_terms: D001099:Arachnoid / Q000000981:diagnostic imaging / Q000473:pathology*; D002533:Cerebral Angiography; D002550:Cerebral Veins / Q000000981:diagnostic imaging / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013346:Subarachnoid Space