What is cerebellar mass?
Cerebellar masses are a heterogenous group of conditions that can cause compression of the aqueduct or fourth ventricle, resulting in obstructive hydrocephalus, brainstem compression, and upward/downward herniation as a direct result of mass effect.
Is posterior fossa a cancerous tumor?
Most tumors of the posterior fossa are primary brain cancers. They start in the brain, rather than spreading from somewhere else in the body. Posterior fossa tumors have no known causes or risk factors.
How is a cerebellar tumor removed?
Symptomatic cerebellar or brainstem hemangioblastomas are typically treated by surgical removal through a sub-occipital or Retromastoid Craniotomy. The goal of hemangioblastoma surgery is to remove the enhancing tumor nodule completely which is able to be accomplished in 80-90% of patients.
Can you feel a cerebellum tumor?
If the tumor is in the cerebellum (the lower, back part of the brain that controls coordination), a person might have trouble walking; trouble with precise movements of hands, arms, feet, and legs; problems swallowing or synchronizing eye movements; and changes in speech rhythm.
Is posterior fossa syndrome curable?
Although certain factors may increase the risk, posterior fossa syndrome cannot be predicted ahead of time. There is no known cure for posterior fossa syndrome, and the course of recovery varies widely.
What is the most common posterior fossa tumor?
hemangioblastoma: most common posterior fossa primary brain tumor in adults. astrocytomas, medulloblastomas, and ependymomas 6 are encountered in the posterior fossa of younger adults but are rare in older adults, accounting for <1% all tumors. lymphoma 4. lipoma 4.
Is surgery necessary for brain tumor?
For a low-grade brain tumor, surgery may be the only treatment needed, especially if all of the tumor can be removed. If there is visible tumor remaining after surgery, radiation therapy and chemotherapy may be used.
How is radiology used to diagnose cerebellar tumors?
Cerebellar tumors are the most common group of solid tumors in children. MR imaging provides an important role in characterization of these lesions, surgical planning, and postsurgical surveillance. Preoperative imaging can help predict the histologic subtype of tumors, which can provide guidance for surgical planning.
What are the bands on a cerebellar image?
MR imaging reveals a cerebellar mass with a typical striated, corduroy, or tiger-striped folial pattern that consists of alternating bands on both T1- and T2-weighted images. The bands are hyper- and isointense relative to gray matter on T2-weighted images (, 17) and iso- and hypointense on T1-weighted images.
Is the cerebellum enlarged on multiplanar MR images?
On multiplanar MR images (, Figs 1, –,,,, 4 ), the cerebellum appeared enlarged, with a mass lesion of abnormal signal intensity in the region of the cerebellar vermis. On T1-weighted images, the mass was predominantly hypointense and had typical prominent hypo- and isointense striations (, Fig 1 ).
What are the four groups of cerebellopontine mass?
Cerebellopontine angle masses can be divided into four groups, based on imaging characteristics: enhancing mass. mass with high T1 signal on MRI. mass with CSF intensity/density. other masses.