Magnetic resonance imaging (MRI) of the brain demonstrated a collection of fluid along the right falx cerebri
and cerebellar tentorium and shift of brain parenchyma to the left [Figure 1].
Axial nonenhanced CT [NECT, Figure 1) shows an extra-axial, left parasagittal mass associated with the anterior falx cerebri
. The mass demonstrates homogenous fluid density and displaces the anterior left frontal lobe laterally.
Other findings include follicular hyperkeratosis, hyperhidrosis, nail dystrophy, calcification of falx cerebri
and choroid plexus.8
An MRI of the brain showed minimal dilation in the subarachnoid space and a focal 1 cm lipoma in the anterior falx cerebri
, but was otherwise unremarkable.
Neuroimaging revealed a multicentric tumor in the posterior fossa, positive leptomeningeal spread, and punctate calcifications along the falx cerebri
. A probable diagnosis of MB in a child with GS was suggested (Figures 1 and 2).
As shown in Figure 2(b), the dML was decomposed into three segments: the upper and the lower straight segments (black lines) representing parts of the tough falx cerebri
separating two brain hemispheres, and the central curved segment formed by a quadratic Bezier curve (white curve), representing the intervening soft brain tissue.
The clinical findings that may be observed in this syndrome include odontogenic keratocysts in the jaw, which generally develop in the first 30 years of life, basal cell carcinomas (BCC) from early childhood, palmar and plantar pits, falx cerebri
calcification, frontal bossing, macrocephaly, broad nasal bridge, mild mandibular prognatism, vertebral anomalies, cleft palate, cleft lip, highly arched palate, eye anomalies, and tumors including medullablastoma and fibromas in the ovaries and heart (2).
Since the falx cerebri
(i.e., narrow light curve/segment) presents on about 30% images, we applied the falx cerebri
as a reference to identify the MSL.
HCP is most commonly seen in the falx cerebri
and tentorium cerebelli and is rare around the cavernous sinus .
MRI of the brain revealed corpus callosum dysgenesis with partial absence of falx cerebri
as well as mild colpocephaly and possible lobar holoprosencephaly.
Head Circumference: It was made by taking an axial section of foetal head in which falx cerebri
, cavum septum pellucidum, thalamus or cerebral peduncles were included.