radiation necrosis

how do you diagnose brain necrosis..my son had radiation a year ago for germinoma brain tumor. and he is having problems now. sleeps 24 hours..sometimes needs help with ADL's. Tremors.  He was doing good and back to himself and about 6 months he started with sleeping too much and over time it his symptoms have slowly progressed. MRI shows no changes..His neuro oncologist thinks depression. He is scheduled for eeg to check for seizures because the symptoms come and go and a psych consult.

[Dr Sharma]

Welcome to the medhelp forum.Radiation necrosis is a known entity with any radiation thearapy despite the current techniques for brain tumor irradiation very specific forcancer cells and minimizing dose to the healthy cells. Some damage is a possibility and brain tissue that sustains this can die off months or years after treatment. Symptoms of brain radiation necrosis are headache, neurocognitive problems, motor function problems and dementia.
It is good that he is going to see a psychiatrist and a reschedule of neurologist evaluation post eeg would be fine in helping coming to some consensus since it doesn’t look like radiation necrosis.
Wish you all the best and take care.