unfortunately its nothing to get excited about. Anything from the sides is
Milts get those often. I even have a couple of seedlings with that growth on top and side of the main bulb.
BTW - this post is in the wrong section ? not sure who tracks this...
It stays small, shouldn't grow any more....I have them on my zygo's too.
At one stage I researched and found that someone said that it could grow into a bulb. That hasn't happened with any of mine. I occasionally see them in nursery plants too, it may be just be an anomaly in the plant biology
To be honest I can't see what growth you are talking about. Is it the little bit at the base of the leave where it joins the p-bulb? If so mine have had that and it's never developed into anything. Both spikes and new growths come from the base of the p-bulb coming up between the leaves at the base usually.