ii) Vascular Malformations

The first three categories are the AVMs, e.g.

Q: What are the 3 types of brain AVMs?

A:  Pial, Dural, Mixed

(1) Pial 

(2) Dural 

(3) Mixed 

(4) AV-fistulae 

(5) Cavernous angiomas

(6) Capillary telangiectasias 

(7) Developmental venous anomalies 

(8) Vein of Galen malformations 

(9) Venous varix

Q: What is a Hamartoma?

A: Tissues that normally belong in that organ in an abnormal arrangement/configuration.

Q: What are the vascular hamartomas?

A: 

Developmental venous anomaly.

Capillary telangiectasia

Cavernous malformation/cavernoma

AVM

Q: What is the most common vascular hamartoma?

A:  DVA

Q: What is the rationale for using MRA (over MRI) for detecting dural AVMs?

A:  On MR the abnormal vessels are dark adjacent to dark dura/inner table.

    On MRA the abnormal vessels are bright adjacent to dark dura/inner table.