Neuro differentials Flashcards
1
Q
Cerebral ring enhancing lesions
A
DR MAGIC d - demyelination r - radiation necrosis or Resolving hematoma m - metastasis a - abscess g - glioblastoma multiforme i - infarct subacute c - contusion
2
Q
Masses arising from the foramen of Monro ddx for adults?
A
Aneurysm Colloid cyst Cysticercus cyst Ependymal cyst glioma lymphoma Meningioma metastasis Pituitary adenoma
3
Q
Masses arising from foramen of Monro in paediatrics?
A
Choroid plexus papilloma Craniopharyngioma Germinoma Glioma Langerhans cell histiocytosis Neurofibromatosis Pilocytic astrocytoma Subependymal giant cell astrocytoma
4
Q
Cerebellopontine angle masses (CPA masses) can be divided into 4 categories. What are the categories and the differential?
A
1. Enhancing Mass - Acoustic schwannoma Meningioma Trigeminal schwanomma Facial nerve schwannoma Ependymoma Metastasis
2. High T1 Signal mass Haemorrhagic acoustic schwannoma Neurenteric cyst Thrombosed berry aneurysm White epidermoid CPA lipoma Ruptured intracranial dermoid
- CSF density masses
Epidermoid cyst
Arachnoid cyst
4. Other masses Primary melanocytic neoplasm neurosarcoidosis cholesterol granuloma paraganglioma pertrous apicitis chrondrosarcoma chordoma endolymphatic sac tumour pituitary adenoma brainstem glioma chorioid plexes papilloma lymphoma hemangioblastoma ependymoma medulloblastoma DNET ganglioglioma
5
Q
Suprasellar lesions differential
A
Rathke's Cleft cyst Craniopharyngioma Aneurysm Pituitary adenoma Meningioma Metastases Germ cell tumour Granuloma Hypothalamic Glioma Optic Chiasm glioma Tuber cinerum hamartoma Dermoid Epidermoid Lymphoma Neurosarcoid
6
Q
Clival based masses
A
…
7
Q
Meckels cave masses
A
…
8
Q
What are the 4 patterns of subarachnoid blood?
A
Supraseller cistern with peripheral extension
Perimesencephalic bleed
Peripheral convexal hemorrhage
No blood on ct only on LP
9
Q
What is the ddx for convexal subarachnoid blood?
A
Trauma Reversible cerebral vasoconstriction syndrome Cerebral amyloid angiopathy Posterior reversible vasoconstriction syndrome Cerebral venous thrombosis Septic emboli Septic aneurysm Coagulopathy Moyamoya Superficial vascular malformation Tumor Vasculitis
10
Q
What is the differential for diffuse SAH?
A
Trauma Saccular aneurysm No saccular aneurysm Arterial dissection Vascular malformation Tumor Vasculitis
11
Q
What is the differential for perimesencephalic SAH?
A
Trauma Nonaneurysmal perimesencephalic hemorrhage Saccular aneurysm Nonsaccular aneurysm Arterial dissection Vascular malformation - possibly spinal Tumor - maybe spinal
