What is a peduncle tumor?
Primary cerebellar peduncle lesions are defined as the ones that arise directly from the peduncle and spread to involve the neighboring cerebellum and brainstem vital areas. Malignant lesions at this location are rare. It is a dilemma whether they behave as cerebellar tumors or as brainstem tumors.
What does cerebellar peduncle mean?
: any of three large bands of nerve fibers that join each hemisphere of the cerebellum with the parts of the brain below and in front: a : one connecting the cerebellum with the midbrain.
Where is the superior cerebellar peduncle located?
cerebellum
The superior peduncle emerges from the upper and medial parts of the white matter of each hemisphere and is placed under cover of the upper part of the cerebellum.
Does the middle cerebellar peduncle Decussate?
Middle cerebellar peduncle (brachium pontis) connects the ventral pons to the cerebellum. Afferent fibers: The middle peduncle is entirely afferent. The fibers come from neurons of pontine nuclei. Axons of the neurons form transverse pontine fibers that decussate and then collect dorsolaterally as the middle peduncle.
Where is cerebral peduncle located?
The cerebral peduncles are a paired structure that takes in the ventral region of the brainstem – the area between the ventricular system and the basal or ventral surface.
Can a peduncle tumor spread to the cerebellum?
Primary cerebellar peduncle lesions are defined as the ones that arise directly from the peduncle and spread to involve the neighboring cerebellum and brainstem vital areas. Malignant lesions at this location are rare. It is a dilemma whether they behave as cerebellar tumors or as brainstem tumors.
What kind of lesions are found in the peduncle?
Primary cerebellar peduncle lesions are defined as the ones that arise directly from the peduncle and spread to involve the neighboring cerebellum and brainstem vital areas. Malignant lesions at this location are rare.
Where are the cerebral peduncles located in the brain?
The cerebral peduncles (also known as the cerebral crus) are the part of the midbrain that link the remainder of the brainstem to the thalami and thereby, the cerebrum. They are the most anterior structure in the midbrain and contain the large ascending and descending tracts that run to and from the cerebrum.
Is the substantia nigra in the cerebral peduncles?
The substantia nigra is located within the cerebral peduncles and considered the structure that separates the cerebral crus from the tegmentum. The term “cerebral peduncles” may be used to refer to a collective structure that includes the cerebral crus and the tegmentum together.