Investigations

Question 1

Bag of worms appearance on MRI clinical features

Answer 1

cerebral Arterial venous malformation

Appearance - shows irregular arteries and large veins with thick walls

2.clinical features kids with seizures or headaches ,intracranial hemorrhage

Question 2

Cryptococous labs

Answer 2

Lumbar puncture : low glucose increased proteins
Leukocyte count decreased
Predominantly lymphocytes
India ink staining - capsule transparent CSF- cryptococous antigen
culture on sabrouds agar

Question 3

What regions of the tumor or resistant to radiation

Answer 3

Regions with decreased perfusion are more resistant to radiation because the free radicals produced by radiation cannot travel to hypoxic areas with poor blood perfusion plus in the absence of oxygen the effects of radiation are significantly diminished because reducing compounds that contains of Sulfahydrl groups scavenging illuminate free radicals.
This is why radiation is usually used combined with other treatments