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2B > Neuro > Flashcards

Neuro Flashcards

1
Q

Neurocysticercosis

A

Vesicular
Colloidal vesicular
Granular nodular
Nodular calcified

Vegans can’t get neurocysticercosis

Usually involve grey white matter junction

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2
Q

Double rim sign

A

Cerebral abscess
Seen on SWI/T2 low signal outer rim, high signal inner rim
Not seen on GBM

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3
Q

TORCH Infections

A

Congenital CNS infections
Toxoplasmosis
Other (syphilis, varicella zoster, parvovirus B19)
Rubella
CMV - most common
HSV

Ventriculomegaly, periventricular calcification

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4
Q

Sub ependymoma

A

Older age group compared to ependymoma
Can look similar but minimal emhancement
Benign and slow growing

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5
Q

Chorus Plexus Papilloma

A

Benign uncommon intraventricular tumour
Adults posterior fossa
Paeds lateral ventricles
Marked homogenous enhancement

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6
Q

Rathke Cleft Cyst Pathognomic Feature

A

Cyst with a dot

No internal enhancement

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7
Q

Dural sinus occlusive disease

A

Infective dural sinus thrombosis seen in acute otomastoiditis

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8
Q

Inverted papilloma

A

Non-cancerous sinonasal tumour
Middle aged men
Convoluted cerebriform pattern T2/T1C

Cannot tell confidently tell apart from sinonasal carcinoma on imaging

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9
Q

Aggressive soft tissue mass centred on olfactory region

A

Olfactory neuroblastoma
Sinonasal carcinoma
Menigioma/hammguipericytoma( solitary fibrous tumour of the dura)

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10
Q

Allergic Fungal Sinusitis

A

Opacified expanded sinsuses with hyperdense CT, low T2 balls due to fungal concretions. Hyper intense peripheral tissues.

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11
Q

Branchial Cleft Cyst

A

Cystic dilation of remnant of clefts

2nd: below angle of mandible, anterior to SCM muscle

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12
Q

Malignant Salivary Gland Tumours

A

Adenocystic carcinoma
Mucoepidermoid carcinoma

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13
Q

Benign Salivary Gland Tumours

A

Pleomorphic adenoma
Warthin Tumour

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14
Q

Odontogenic Meaning

A

Relating to tissue that is involved in the formation of teeth

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15
Q

Dentigerous Cysts

A

Benign non-inflammatory odontogenic cysts well defined lucency surrounding an unerrupted crown of an unerrupted tooth.

Slightly older population than OKCs as occur with secondary dentition

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16
Q

Radiolucent lesions of the mandible

A

Odontogenic vs Non-Odontogenic

O:
Periapical Cyst
Periapical abscess
Dentigerous Cyst
Odontogenic Keratocysts (Gorlin Goltz)
Ameloblastoma

Non-O:
Fibrous dysplasia, mets, myeloma, ABC, simple cyst

17
Q

-melic

A

Related to a limb

18
Q

Fibrous Dyslasia Syndromes

A

McCune-Albright: polyostotic FD, precocious puberty, cafe au lait spots
Mazabraud: FD, intramuscular myxomas

19
Q

Wharton’s Duct

A

Sub-mandibular duct

20
Q

Stenson’s Duct

A

Parotid duct

21
Q

Laryngocoele

A

Air filled cystic lesion in paraglottic space in continuity with laryngeal ventricle

22
Q

Blood in middle ear

A

Haemotympanum

23
Q

Intraconal lesions sparing optic nerve

A

Cavernous haemangioma
Lymphatic malformation
Orbital lymphoma

24
Q

Intraconal lesions involving the nerve

A

Optic nerve glioma
Optic nerve meningioma
Optic neuritis
Pseudo tumour
Lymphoma

25
Q

Lacrimal Gland Masses

A

Inflamm:
Sarcoid
Pseudotumour
Sjogren

Neoplastic:
Pleomorphic adenoma
Adenoid cystic carcinoma

26
Q

Sjogren Syndrome

A

AI condition of the exocrine lacrimal and salivary glands associated

Salt and pepper appearance on MRI

27
Q

Globe calcification

A

Retinal: retinalblastoma
Coats: small globe, retinal detachment with exudates

28
Q

Colpocephaly

A

Enlargement of the occipital horns

Associated with agenesis of the corpus callosum

29
Q

Osteoporosis Circumscripta (Cranii)

A

Discrete radiolucent regions of the skull. Often seen in the context of lyric phase of pager’s disease but may be seen in other conditions e.g. hyperparathyroidism

2B (5 decks)

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