Full System Scan Results

I did a full system scan and 2 risks were quarantined and one item was removed.

All 3 were high risk. What is the difference between quarantined and removed.

The 2 risks that were quarantined had been worked on by a Symantec tech person when I chatted with him a couple of weeks ago. QUESTION: Can I expect to see these risks again next time I do a full system scan??