Developmental venous anomaly (DVA) (venous angioma)

Question 1

What is DVA venous angioma

Answer 1

Vascular malformations ➡️ tuft medullary vein convergence to songs central trunk ( collecter vein) drain to ➡️ epndymal or dural vein
No 🚫 abnormal artery
✔️ normal brain branchyma between vessels 🔛 AVM
Function as part of venous systems 🔵

Question 2

What is the flow no pressure venous angioma

Answer 2

Low flow low pressure 🔛 AVM

Question 3

Most common site of venous angiom

Answer 3

MCA or VOG

Question 4

Sx

Answer 4

Rarely sx ➡️ thrmbosis of vein
If sx R/ o cvrnous malformation

Question 5

Imaging

Answer 5

Best seen in ➡️MRI T1 , MRv
t2 GRE , SWi if hemosider 🔘➡️ cavernous malformation ( brush”- or “stipple”-like enhancement interspersed among normal brain parenchyma.)
occult in angio , the DVA should show no AV shunting 🔛characteristic of AVM).

Question 6

Pathonemonic finding

Answer 6

Caput medusa 🐍 or sunburst 🌞

Question 7

Common vascular malformations lesion

Answer 7

Venous angioma

Question 8

📍 common location

Answer 8

Frontal lobe
Cerebllume

Question 9

TX

Answer 9

SRS is of no benefit for venous angioma,

If surgery is indicated for associated cavernous malformations, the DVA should be left alone.

Surgery for the DVA itself is reserved only for documented bleeding or for intractable seizures definitely attributed to the lesion.

DVAs drain normal brain parenchyma, treatment may result in ➡️ devastating venous infarcts.

Question 10

Most common vascular lesion detection in autopsy

Answer 10

DVA

Question 11

only vascular malformation that is composed of sacs of stagnant

blood with deoxyhemoglobin thus exhibit SWI , Gecho

Answer 11

Capillary telangiectasia

Question 12

Mc age

Answer 12

3rd and 4 th decades