KEY FACTS Terminology Hydromyelia = cystic central canal dilatation Syringomyelia = cystic spinal cord cavity not contiguous with central cord canal Syringobulbia = brainstem syrinx extension You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Dilatation of arachnoid and dura of spinal posterior nerve root sheath containing nerve fibers You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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KEY FACTS Terminology CSF flow-related phenomenon due to time of flight (TOF) effects and turbulent flow Imaging Location: Intrathecal, subarachnoid space Most prominent in cervical and thoracic spine Low or high signal intensity Ill-defined margins Top Differential Diagnoses Vascular malformation, type I dural arteriovenous fistula Vascular malformation, type IV arteriovenous fistula CSF drop metastases Clinical Issues TOF effects Dark CSF signal Positive relationship between CSF velocity…
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KEY FACTS Terminology Slow-growing glioma arising from ependymal cells of conus, filum terminale, cauda equina You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Neoplasm arising from ependyma lining spinal cord central canal Imaging Circumscribed, enhancing hemorrhagic cord mass with surrounding edema Associated cysts common Cervical > thoracic > conus T1WI: Isointense or slightly hypointense to spinal cord T2WI: Hyperintense relative to spinal cord Cap sign: Hemosiderin at cranial or caudal margin Most tumors enhance Peripheral enhancement of tumoral cysts Top Differential Diagnoses Astrocytoma Hemangioblastoma Demyelinating disease…
KEY FACTS Terminology Primary neoplasm of astrocytic origin within spinal cord Imaging Fusiform expansion of cord with enhancing component of variable morphology Almost always enhances Cervical > thoracic Usually ≤ 4 segments Occasionally multisegmental, even holocord (more common with pilocytic astrocytoma) ± cyst/syrinx (fluid slightly T1 hyperintense to CSF) Hyperintense on proton density and T2WI MR Top Differential Diagnoses Ependymoma Hemangioblastoma Metastasis Syringohydromyelia Autoimmune or inflammatory…
KEY FACTS Terminology Synonyms: Glomus tumor, extraadrenal pheochromocytoma, chemodectoma You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
KEY FACTS Terminology Spread of malignant tumor through subarachnoid spaces of brain and spinal cord You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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KEY FACTS Terminology Neoplasm containing Schwann cells, fibroblasts, myxoid material, and peripheral nerve fibers You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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KEY FACTS Terminology Neurinoma, neurilemmoma (outdated terms) Neoplasm of nerve sheath (Schwann cells) You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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