Neuroradiology Differential Diagnosis Flashcards

Brain tumor
Terms Definitions
Increased Signal on T1WI
Fat
High Protein
Subacute Hemorrhage (Methemoglobin)
Gadolinium
Other Paramagnetics (Manganese, Calcium, Melanin)
Decreased Signal on T1WI
Water (CSF, Edema)
Acute Hemorrhage (Deoxyhemoglobin)
Chronic Hemorrhage (Hemosiderin)
Diamagnetic Effects (Calcification, Air)
Fast Blood Flow
Very Viscous Protein
Increased Signal on T2WI
Water (CSF, Edema)
Late Subacute Hemorrhage (Extracellular Methemoglobin)
Decreased Signal on T2WI
Fat (NON-FSE)
High Protein
Acute Hemorrhage (Deoxyhemoglobin)
Chronic Hemorrhage (Hemosiderin)
Early Subacute Hemorrhage (Intracellular Methemoglobin)
Other Paramagnetics (Melanin, Calcium)
Diamagnetic Effects (Calcification, Air)
Fast Blood Flow
MR Signals of Hemorrhage
“ITY BITY BABY DODO”
“ITY BITY BABY DODO”

Deoxy Hemoglobin ID (Iso T1, Dark T2)
Intracellular Methemoglobin BD (Bright T1, Dark T2)
Extrecellular Methemoglobin BB (Bright T1, Bright T2)
Hemosiderin DD (Dark T1, Dark T2)
Intracerebral Hemorrhage
Trauma (edema)
Infarction (edema)
Primary Neoplasm/Mets (edema)
Hypertension (basal ganglia, cerebellum, brainstem)
Amyloid Angiopathy (elderly)
Aneurysm
AVM
Vasculitis
Dural Sinus Thrombosis
Bleeding Diatheses
Cavernous Hemangioma
Hemorrhagic Mets
RCC
Thyroid
Choriocarcinoma
Melanoma
Lung
Breast
Cerebellar-Pontine Angle Mass
Vestibular Schwannoma
Meningioma
Epidermoid
Nonacoustic Schwannoma
Mets
Arachnoid Cyst
Aneurysm
Sellar/ Parasellar Mass
Pituitary Adenoma
Rathke Cleft Cyst
Craniopharyngioma
Aneurysm
Meningioma
Optic Glioma
Hypothalmic Glioma
Hypothalmic Hamartoma
Sarcoid
TB
Germ Cell Tumor
Pituitary Stalk-Enhancing Lesions
Pituitary Stalk-Enhancing Lesions

Sarcoidosis
EG
Lymphoma
Mets
Glioma
Germinoma
Pineal Region Mass
Pineal Region Mass

Germ Cell Tumor (Teratoma or Seminoma)
Pineoblastoma
Pineocytoma
Cyst
Glioma
Lipoma
Vein of Galen Malformation
Trilateral Retinoblastoma
Clivus Mass
Clivus Mass

Chordoma
Mets
Plasmacytoma
Chondrosarcoma
Posterior Fossa Lesion (Adult)
Posterior Fossa Lesion (Adult)

Infarction (Most common cause of Non-Communicating Hydrocephalus.
Other causes include Aqueductal Stenosis, Brainstem Glioma)
Mets
Hemangioblastoma
MS
Abscess
CNS Tumors that Subarachnoid Seed
CNS Tumors that Subarachnoid Seed

Medulloblastoma

Glioblastoma Multiforme
Ependymoblastoma
Pineoblastoma
Oligodendroglioma
CPP
Germinoma
Widened Skull Dipole
Widened Skull Dipole

Paget Disease (“cotton wool”)
Fibrous Dysplasia
Sickle Cell/Thalassemia (“hair-on-end”)
Locally with Meningioma
Posterior Fossa Mass (Child)
Posterior Fossa Mass (Child)

Medulloblastoma (Displaced 4th Ventricle Anteriorly, Drop Mets)
Pilocytic Astrocytoma
Ependymoma (Displaces 4th Ventricle Posteriorly, “Plastic” Tumor)
Brainstem Glioma
Posterior Fossa “Cyst”
Posterior Fossa “Cyst”

Epidermoid Cyst
Arachnoid Cyst
Dandy Walker Cyst (and Dandy Walker Variant)
Mega Cisterna Magna
Childhood Brain Tumors
Childhood Brain Tumors

Pleomorphic Xanthoastrocytoma (Teen, Temporal Lobe,
Cystic with Mural Nodule)
Ganglioglioma (Benign)
Dysembryoplastic Neuroepithelial Tumor
Primitive Neuroectodermal Tumor (Aggressive, Intense Enhancement,
Dense Cell Packing)
Oligodendroglioma (Chunky Calcifications, Frontal Lobes)
Ependymoma
Lesions Associated with Agenesis of Corpus Callosum
Lesions Associated with Agenesis of Corpus Callosum

(Parallel Lateral Ventricles, “High-Riding” 3rd Ventricle, Colpocephaly)

Isolated
Dandy-Walker Syndrome
Septo-Optic Dysplasia (NO Septum Pellucidum)
Holoprosencephaly (NO Septum Pellucidum)
Chiari II
Schizencephaly (May Not Have Septum Pellucidum)
Lipoma
Encephaloceles
Expanded Spinal Cord
Expanded Spinal Cord

Ependymoma (SAH, Syrinx)
Astrocytoma (Syrinx)
Hemangioblastoma (Syrinx)
MS
Transverse Myelitis
Infection
AVM
Syrinx
Cavernous Hemangioma
Radiation
Hemorrhage
Extramedullary/ Intradural Spinal Cord Mass
Extramedullary/ Intradural Spinal Cord Mass

Schwannoma/Neurofibroma (CAUDA EQUINA)
Meningioma

Myxopapillary Ependymoma (CAUDA EQUINA)
Drop Mets (Medulloblastoma, Glioma)
Mets (Breast, Lung)
Non-Hodgkin Lymphoma
Dural AVM
Hematoma
Extradural Spinal Mass
Extradural Spinal Mass

Herniated Disk
Synovial Cyst
Lymphoma
Veretebral Body (Osteophyte, Hemangioma, Metastases, Other Tumors)
Epidural Abscess
Epidural Hematoma
Epidural Lipomatosis
Causes of Syrinx
Causes of Syrinx

Tumor
Ependymoma
Astrocytoma
Hemangioblastoma
Chiari I
Trauma
Cerebral Ischemia PEDS
Cerebral Ischemia PEDS

Meningitis
Trauma
Congenital Heart Dz
Cerebral Ischemia YOUNG ADULT
Cerebral Ischemia YOUNG ADULT

Dissection
Drugs (methamphetamine, heroine)
Cardiac Emboli
Venous Thrombosis (OCP’s)
Cerebral Ischemia ELDERLY
Cerebral Ischemia ELDERLY

Amyloid
Coagulopathy
Atherosclerosis
Ring Enhancing Lesion in the Brain
Ring Enhancing Lesion in the Brain

Metastases
MS (Active Demyelination)
Abscess
Glioblastoma
Infarct
Resolving Hematoma
Radiation Necrosis
AIDS- Lymphoma and Toxoplasmosis
Calcified Mass
Calcified Mass

Oligodendroglioma

Meningioma
Radiation Treated Tumor
Cavernous Angioma
Calcifications Without Mass (Cystercercosis, Mineralizing Angiopathy
from Radiation, TORCH in Neonate)
Hyperdense/Non-calcified Mass on NCECT
Hyperdense/Non-calcified Mass on NCECT

Lymphoma
Meningioma
Medulloblastoma
Rathke’s Cleft Cyst
Hemorrhage
Germinoma
Colloid Cyst
Iron-Containing Lesion (Old Hemorrhage)
Lesions Crossing the Corpus Callosum
Lesions Crossing the Corpus Callosum

Lymphoma
Glioblastoma Multiforme
MS
Third Ventricular Mass
Third Ventricular Mass

Colloid Cyst
Craniopharyngioma
Hypothalmic/Thalamic Glioma
Basilar Tip Aneurysm
Mets
Intraventricular Mass
Meningioma (Atria of Lateral Ventricle)
Choroid Plexus Papilloma (Atria of Lateral Ventricle in Children, 4th Ventricle in Adults)
Subependymal Giant Cell Astrocytoma (Arisesg Foramen of Munroe)
Central Neurocytoma (Attached to Septum Pellucidum)
Ependymoma
Medulloblastoma
Cysticercosis
Mets
Leptomeningeal Enhancement
Leptomeningeal Enhancement

Meningitis (Viral or Bacterial)
Carcinomatosis
TB (Basilar Meninges)
Cocci (Basilar Meninges)
Neurosarcoidosis (Basilar Meninges)
Sturge Weber (Associated with Cortical Atrophy and
Enlarged Ipsilateral Choroid Plexus)
White Matter Disease in the Brain

DEMYELINATING
DEMYELINATING

MS
Acute Disseminated Encephalomyelitis
Lyme Dz
Posterior Reversible Encephalopathy (eclampsia, cyclosporin)
PML
AIDS
White Matter Disease in the Brain

DEMYELINATING
DYSMYELINATING

Adrenolekodystrophies (Posterior)
Alexender’s (Anterior)
Canavan’s
White Matter Disease in the Brain

ISCHEMIA
ISCHEMIA

Microangiopathic Ischemic Dz
Vasculitis
Radiation
White Matter Disease in the Brain

TOXIC and TRAUMATIC
TOXIC
ETOH
TRAUMATIC
Sheer
Increased T1WI Basal Ganglia
Increased T1WI Basal Ganglia

Dystrophic Calcifications
Hepatic Failure
TPN (manganese)
NF1
Increased T2WI Basal Ganglia
Increased T2WI Basal Ganglia

Carbon Monoxide (GP-medial)
ADEM
Ischemia
Wilson’s Dz
Leigh’s Dz
Decreased T2WI Basal Ganglia
Decreased T2WI Basal Ganglia

Iron Deposition (Hemochromatosis)
Hallervorden-Spatz Dz
Increased T2 Signal in the Brainstem
Increased T2 Signal in the Brainstem

Glioma
ADEM
Central Pontine Myelinolysis (Spares Corticospinal Tracts)
Increased T2 Signal in the Temporal Lobe(s)
Increased T2 Signal in the Temporal Lobe(s)

Herpes Encephalitis

Low Grade Tumor
Infarction
Non-Hemorrhagic Contusion
/ 42
Term:
Definition:
Definition:

Leave a Comment ({[ getComments().length ]})

Comments ({[ getComments().length ]})

{[comment.username]}

{[ comment.comment ]}

View All {[ getComments().length ]} Comments
Ask a homework question - tutors are online