Dendrobium new shoot something growing
 

This dendrobium Nobile I got with a new shoot. However, the new shoot dried out under my initial care and the top was “shed” by the plant. Now something is growing on the stump, what is it? Thank you

Very likely another growth (which may well develop some new roots) Observe, see what you get.

I need new roots on this plant. That would be awesome! Thank you, Roberta

Yamamoto Dendrobiums had information on how to care for this kind of Dendrobium.

Edit June 15 2020:
Yamamoto Dendrobiums in Japan hybridizes and produces a great number of these plants. Their Web site formerly had excellent growing information for hobbyists. Unfortunately it is no longer there. You can still look at the varieties they grow, and maybe see one very similar to yours.

I saved the page, and summarized it in a post in this thread:
Uncertain if Dendrobium is still alive

Yamamoto now has a page showing how to force Dendrobium nobile for Christmas flowering in Japan's climate. There is a lot to learn from that page, but it is intended for growers who can artificially heat and cool their greenhouses during off seasons. Note they use coconut husk for growing medium, which many orchidists would say retains too much water for orchids. For many orchids that is correct, but this is a very thirsty orchid.

A keiki on the plant is growing new roots. I can see it in the first photo.

I am asking about this growth. Is this a keiki?

They are most likely keikis.