Abstract：
:A previously healthy 44-year-old woman presented with a first-time seizure. Magnetic resonance imaging (MRI) revealed a right frontal intraaxial mass extending from the orbitofrontal gyri and gyrus rectus to the head of the caudate (Video 1). The mass demonstrated heterogeneous signal intensity on precontrast T1-weighted MRI, minimal contrast enhancement, and mixed intensity on gradient echo MRI sequence consistent with a likely cavernous malformation. Given the location above the orbital roof with cranial-caudal extension to the level of the caudate, a transblepharo-preseptal modified orbitozygomatic craniotomy was recommended. With the assistance of plastic surgery, the lesion was approached through an eyelid incision that extended laterally to expose the keyhole. A McCarty burr hole was made, followed by a tailored orbitozygomatic craniotomy with osteotomies extending through the superolateral orbit and greater sphenoid wing to expose the proximal sylvian fissure. Dura was opened in a C-shaped fashion over the periorbital fat to allow for mild downward retraction of the globe, exposing the subfrontal trajectory. The opticocarotid cistern was opened to allow for cerebrospinal fluid egress and relaxation, and the lesion was readily identified through the use of stereotactic neuronavigation and presence of a faint hemosiderin blush within the underlying parenchyma. The standard microsurgical technique was used to perform a gross total resection of the pathologically confirmed cavernous malformation. The orbitozygomatic bone flap was replaced and plated, and the wound was closed in multiple layers. The patient was seen at a 3-month follow-up without further seizures.
journal_name
World Neurosurgjournal_title
World neurosurgeryauthors
Rutkowski MJ,Ravina K,Carey JN,Russin JJdoi
10.1016/j.wneu.2019.12.160subject
Has Abstractpub_date
2020-04-01 00:00:00pages
6eissn
1878-8750issn
1878-8769pii
S1878-8750(19)33192-4journal_volume
136pub_type
abstract：BACKGROUND:Intracranial tumor growth associated with pregnancy is not an uncommon phenomenon. Pilocytic astrocytoma is typically considered to be an indolent tumor with little to no risk of progression to higher-grade lesion. We present a rare case of cerebellar pilocytic astrocytoma transformation to hemorrhagic high-...
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