Growth on raspberry cane: What is it?
A botanist at a local university says it is most definitely Crown Gall.



He didn't provide any other information than that, so all I can do is quote Wikipedia:


  Agrobacterium tumefaciens (updated scientific name Rhizobium radiobacter, synonym Agrobacterium radiobacter) is the causal
  agent of crown gall disease (the formation of tumours) in over 140
  species of eudicots.


https://en.wikipedia.org/wiki/Agrobacterium_tumefaciens