What is quadrigeminal?
adj. Consisting of four parts; fourfold.
What is cistern lipoma?
Quadrigeminal cistern lipomas make up approximately 25% of intracranial lipomas and are located within the quadrigeminal cistern. They may be associated with hypoplasia of the inferior colliculus or agenesis of the corpus callosum. For a general discussion please refer to the article on intracranial lipomas.
What is the quadrigeminal plate cistern?
The quadrigeminal cistern is a complex region harboring important neural, arterial, and venous structures at the posterior aspect of the midbrain and third ventricle (Fig. 2.5F). The splenium of the corpus callosum and the vein of Galen and its tributaries make the superior wall of the quadrigeminal cistern.
Where is Quadrigeminal plate?
midbrain
The quadrigeminal plate, also known as the tectal plate or tectum, is constituted by the superior and inferior colliculi. The tectum is the dorsal portion of the midbrain (brainstem), located posteriorly to the mesencephalic aqueduct. It derives from the alar plate of the neural tube during embryonic development.
What 2 things does the midbrain control?
The midbrain or mesencephalon is the forward-most portion of the brainstem and is associated with vision, hearing, motor control, sleep and wakefulness, arousal (alertness), and temperature regulation. The name comes from the Greek mesos, “middle”, and enkephalos, “brain”.
What are the cisterns of the brain?
Cisterns are openings in the subarachnoid space of the brain created by a separation of the arachnoid and Pia mater. Continuos with 4th ventricle through median aperture of Magendie. Its lateral part contains the vertebral artery and its posterior inferior cerebellar branch.
What does Tectal mean?
tec·ta (-tə) A rooflike structure of the body, especially the dorsal part of the midbrain. [Latin tēctum, roof, from neuter past participle of tegere, to cover; see (s)teg- in Indo-European roots.] tec′tal (-təl) adj.
What are the lumps protruding from the midbrain?
Those bumps are indicative of the presence of four large underlying clusters of neurons; the upper pair of those clusters are known as the and the lower pair are known as the inferior colliculi.
What are the differentials of the quadrigeminal plate?
Differentials specific to its location (quadrigeminal plate) include tectal plate glioma or mass, tectal plate cyst, arachnoid cyst, dermoid cyst and epidermoid cyst 7. 1. Loevner LA. Case review, brain imaging. Mosby Inc. (1999) ISBN:032300430X.
Where is the quadrigeminal plate located in the brain?
The quadrigeminal plate , also known as the tectal plate or tectum, is constituted by the superior and inferior colliculi. The tectum is the dorsal portion of the midbrain ( brainstem ), located posteriorly to the mesencephalic aqueduct. It derives from the alar plate of the neural tube during embryonic development.
What do you need to know about quadrigeminal cistern lipoma?
Quadrigeminal cistern lipoma. They may be associated with hypoplasia of the inferior colliculus or agenesis of the corpus callosum . Please refer to the generic article on intracranial lipomas for further discussion of radiographic findings and differential diagnoses.
Is there a cyst at the quadrigeminal cistern?
Magnetic resonance (MR) imaging with gadolinium shows a small cyst located at the quadrigeminal cistern, following cerebrospinal fluid (CSF) signal in all pulse sequences, homogeneously hypointense on T1 weighted MR and FLAIR images, and hyperintense com T2 weighted MR, without contrast enhancement.