Cerebral arteriovenous malformation (CAVM)

 

A 10 years old boy presenting with seizures with left hemiparesis. A CT scan of Brain was done. The post contrast image is attached here. What is the diagnosis? Cerebral arteriovenous malformation (CAVM).

AVM comprises of

1. Feeding artery

2. Nidus 

3. Draining vein. 


Brain AVMs can be divided into two types

1.       Compact (or glomerular) nidus: abnormal vessels without any interposed normal brain tissue. More common than diffuse nidus type.

 

2.       Diffuse (or proliferative) nidus: no well-formed nidus is present, with functional neuronal tissue interspersed amongst the anomalous vessels

Comments

Post a Comment

Popular posts from this blog

Guidelines for Follicular Study - Ovulation study - By Dr. Nitin Gupta, Radiologist, Kolkata, India.

1. Baseline scan is done on day 2/3 of cycle where u are supposed to mention Antral follicle count (2-9mm) and any retained follicular cyst from previous cycle .. it determines ovarian reserve as well help gynaec to decide stimulation dose  After day 8 they want to know how many dominant follicles are growing ... If IUI or OI/TI CYCLE  one or two dominant follicles are recruited  If IVF cycle multiple follicles are recruited  Mention number of follicle and sizes .. measure in two dimensions at least (each follicle) 2. Till the follicle size reaches 17-18 mm .. time to go for pick up in IVF cycles or for trigger in IUI or oi and ti cycles Usually follicles grow at speed of 1-2 mm per day  3. Regarding endometrium when u do day2/3  scan endometrium should be thin (<5mm) ... if it is thick than do see endometrium again once period is over (day 5-6) ... I’d still thick than gynaec usually do some scratching or they don’t proceed in same cycle 4. Endometri...
Read more