Items tagged “posterior fossa”
4 results found
Article
Pilocytic astrocytoma
Pilocytic astrocytomas, also known as juvenile pilocytic astrocytomas, are circumscribed astrocytic gliomas that typically occur in young patients. The majority of sporadic pilocytic astrocytomas arise from the cerebellum, whereas in the setting of neurofibromatosis type 1 (NF1), they often invo...
Article
Medulloblastoma
Medulloblastomas are the most common malignant brain tumors of childhood, most often presenting as midline masses in the roof of the 4th ventricle with associated mass-effect and hydrocephalus. Treatment typically consists of surgical resection, radiation therapy, and chemotherapy, with the prog...
Article
Tegmentovermian angle
The tegmentovermian angle is an important measurable parameter in the assessment of posterior fossa abnormalities in the fetus. The angle is constructed on midsagittal images of the fetal brain, ideally on MRI.
The angle is formed by the intersection of the following two lines 1:
line 1: along...
Article
Posterior meningeal artery
The posterior meningeal artery (PMA) is the largest artery supplying the dura mater of the posterior cranial fossa ref.
Gross anatomy
Origin and course
The origin of the posterior meningeal artery is quite variable 1,2. It most commonly arises from the V3 segment and occasionally from the V4 ...