Help with yellow tang. Not ich

[Phishguy]

My yellow tang has developed a spot at the very tip of its top fin. Dorsal? Anyhow, it's not ich and it's only in this one spot. I know a pic would help, but I've been unsuccessful in getting one that would make an I'd easy. If I get a good look at it, it almost resembles a tiny clear sack with hits beads.. The whole size can't be much more, If at all bigger than 1mm. Seems healthy and eating ok otherwise.

 

[b0bab0ey]

Look anything like this?

 

[Phishguy]

It does look like that. What is it?

 

[b0bab0ey]

It does look like that. What is it?

Lymphocystis, a virus. It usually just goes away on it's own. But you can help your Yellow Tang's immune system fight it off by feeding nutritious vitamin enriched foods and maintaining excellent water quality.

 

[dunc101]

My yellow tang had the exact same thing... in almost exactly the same spot. It went away after about a month.

 

[Phishguy]

My tank was without power for 6 days from the snow. My tank took a beating to say the least. I'm actually surprised any fish were saved.
What should I keep an eye out for? Is it going to end up dying?
Thanks for the id!