What is hyperintensity of the spine?

What is hyperintensity of the spine?

Definition. A region of high intensity (brightness) observed upon magnetic resonance imaging (MRI) scans of the spinal cord. [

What is idiopathic spinal reaction?

Idiopathic spinal cord herniation (ISCH) is a rare condition, of unknown pathogenesis, that primarily affects the thoracic spinal cord. It is characterized by ventral displacement of the spinal cord through a dural defect.

What is ventral displacement?

When the anteroposterior diameter of the low intensity area behind the spinal cord on the sagittal T1 weighted images taken in the supine position was more than one third the anteroposterior diameter of the cord at T12/L1, the spinal cord was defined as being displaced ventrally.

What causes myelopathy?

Causes of myelopathy include spinal stenosis, spinal trauma and spinal infections, as well as autoimmune, oncological, neurological and congenital disorders. Myelopathy can be cervical and thoracic; cervical myelopathy is the most prevalent. Myelopathy is typically a gradual degenerative process affecting older adults.

What is an arachnoid web?

The arachnoid is a thin transparent membrane that surrounds the brain and spinal cord. A dorsal arachnoid web is an abnormal collection of arachnoid tissue that may compress the spinal cord, usually in the upper thoracic spine producing symptoms of numbness and weakness in the legs.

What does ventral spinal cord mean?

The ventral nerve cord is a major structure of the invertebrate central nervous system. It is the functional equivalent of the vertebrate spinal cord. The ventral nerve cord coordinates neural signaling from the brain to the body and vice versa, integrating sensory input and locomotor output.

What is the ventral cord in the spine?

Ventral root fibers are the axons of motor and visceral efferent fibers and emerge from poorly defined ventral lateral sulcus as ventral rootlets. The ventral rootlets from discrete spinal cord section unite and form the ventral root, which contain motor nerve axons from motor and visceral motor neurons.

Are symptoms related to arachnoid cyst?

Symptoms of a spinal arachnoid cyst depend on its size and location. Many spinal arachnoid cysts cause no symptoms at all. However, if the cyst is large enough, it can compress the spinal cord and surrounding nerves. In these cases, patients may experience pain, weakness, or numbness in the back, arms, or legs.

What is the average size of an arachnoid cyst?

Large Arachnoid Cyst. Arachnoid cysts are congenital malformations and are filled with cerebrospinal fluid, and they can be incidental findings on imaging. When large, as in this patient, they can cause a mass effect. A craniotomy for fenestration of the arachnoid cyst was performed; subsequently, a right frontal cyst-peritoneal shunt was placed…

Can arachnoid cysts cause death?

Deaths from Intracranial arachnoid cysts. Intracranial arachnoid cysts: Deaths. Untreated intracranial arachnoid cysts are serious and life-threatening. However, some cysts never cause problems.

What is an arachnoid brain cyst?

Arachnoid cysts are sacs filled with cerebrospinal fluid (CSF) that are located between the brain or spinal cord and the arachnoid membrane, one of the three membranes that cover the brain and spinal cord. Arachnoid cysts can be primary or secondary.


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