Neuro Flashcards
Neurocysticercosis
Vesicular
Colloidal vesicular
Granular nodular
Nodular calcified
Vegans can’t get neurocysticercosis
Usually involve grey white matter junction
Double rim sign
Cerebral abscess
Seen on SWI/T2 low signal outer rim, high signal inner rim
Not seen on GBM
TORCH Infections
Congenital CNS infections
Toxoplasmosis
Other (syphilis, varicella zoster, parvovirus B19)
Rubella
CMV - most common
HSV
Ventriculomegaly, periventricular calcification
Sub ependymoma
Older age group compared to ependymoma
Can look similar but minimal emhancement
Benign and slow growing
Chorus Plexus Papilloma
Benign uncommon intraventricular tumour
Adults posterior fossa
Paeds lateral ventricles
Marked homogenous enhancement
Rathke Cleft Cyst Pathognomic Feature
Cyst with a dot
No internal enhancement
Dural sinus occlusive disease
Infective dural sinus thrombosis seen in acute otomastoiditis
Inverted papilloma
Non-cancerous sinonasal tumour
Middle aged men
Convoluted cerebriform pattern T2/T1C
Cannot tell confidently tell apart from sinonasal carcinoma on imaging
Aggressive soft tissue mass centred on olfactory region
Olfactory neuroblastoma
Sinonasal carcinoma
Menigioma/hammguipericytoma( solitary fibrous tumour of the dura)
Allergic Fungal Sinusitis
Opacified expanded sinsuses with hyperdense CT, low T2 balls due to fungal concretions. Hyper intense peripheral tissues.
Branchial Cleft Cyst
Cystic dilation of remnant of clefts
2nd: below angle of mandible, anterior to SCM muscle
Malignant Salivary Gland Tumours
Adenocystic carcinoma
Mucoepidermoid carcinoma
Benign Salivary Gland Tumours
Pleomorphic adenoma
Warthin Tumour
Odontogenic Meaning
Relating to tissue that is involved in the formation of teeth
Dentigerous Cysts
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