Hello and welcome to HCM.
As an
Urologist,i can understand your anxiety.
Your brother has APKD.This is a genetic disease inherited from parents.
All children should get an annual
ultrasound scan,even if it's normal.
Once diagnosed,check urine routine and culture.
Blood routine,
creatinine,RBS,LFT,and electrolytes.
Normally it manifests in the fourth or fifth decades. It can lead to complications like,stones,infection,
hematuria,other organ cysts and failure.
If you've any other doubts,send your doubts as a direct question to me.
Dr.Matthew J. Mangat.