Papillary meningioma arising from the confluens sinuum with multidirectional extension through venous sinuses.
Successful removal of a meningioma arising from the confluens sinuum is described. This tumor extended multidirectionally through the venous sinuses (superior sagittal sinus, bilateral transverse sinuses, straight sinus, and occipital sinus) and protruded like a club in nodular pattern from the left inner surface of the confluens sinuum into the left occipital lobe. The tumor was completely removed via a bilateral large parieto-occipito-suboccipital craniotomy. Angiographically, unusual venous drainage from the vein of Galen into the superior sagittal sinus was demonstrated. Histologically, this tumor was a papillary meningioma characterized by two types of papillary structure in many areas.
Department of Neurosurgery and Pathology, Center for Adult Diseases, Osaka, Japan.
H
H
Nakagawa
S
S
Nakajima
A
A
Murasawa
K
K
Niiyama
S
S
Ishiguro
D002533:Cerebral Angiography; D003392:Cranial Sinuses / Q000000981:diagnostic imaging* / Q000601:surgery; D003399:Craniotomy; D005260:Female; D006801:Humans; D008577:Meningeal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008579:Meningioma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D008875:Middle Aged; D014057:Tomography, X-Ray Computed