A stat noncontrast computed tomography (CT) scan of the head was preliminarily read as being a diffuse subarachnoid hemorrhage and falcine
subdural hemorrhage (Figure 1a and 1b).
Although pachymeningeal changes are commonly found over the cerebral convexities and in basal or tentorial locations [2, 6], falcine
involvement has been also described .
Caption: Figure 4: Initial head CT without contrast in our patient described above noted a falcine
with bifrontal subdural hematoma at the vertex (a).
[13,14] Out of 11 cases of meningioma 6 were in cerebral convexities, 2 in sphenoidal ridge, 2 were falcine
, and 1 parasagittal.
Head CT (Figure 1) showed 1.5 cm right panhemispheric hyperdensity in the subdural space with significant midline shift, falcine
herniation, uncal herniation, and loss of basilar cisterns.
Subarachnoid hemorrhage was present in 67.4% of tumor locations other than the convexity, parasagittal, and falcine
7: Meningioma-Sagital T1 post contrast MR shows Falcine
meningioma with invasion of with Superior sagital sinus and significant perilesional edema and mss effect.
Gamma Knife surgery for convexity, parasagittal, and falcine
(7) Two rare cases of falcine
tumors have been reported, in which the lesions contained both hyaline cartilage and bone, and were so termed as osteochondromas.
La vena prosencefalica media es un vaso transitorio que drena a los plexos coroideos y se dirige posteriormente hacia un plexo dural dorsal, denominado sinus falcine
. La vena prosencefalica media regresa cuando el desarrollo de los ganglios basales y de los plexos coroideos induce la formacion de las venas cerebrales internas definitivas.
This in turn drained via falcine
veins into the large transverse and sigmoid sinuses.