my plant was doing well with tomatoes already growing the green stage now these lumps or growths are going all over the stems and killing the plant. i dont think they are root nodes because they go all the way up the plant on some of the branches. i tried pruning off the dying branches to see if it would help

Root initials. Usually due to hi humidity/moisture and/or stress.

If the plant is dying, that's not the reason. Look for the primary cause.