Thanks so much 'BJ' for your incredibly unhelpful, full-of-attitude response. My, I'll bet that you're just the type of individual that people at parties queue up to talk to & have fun with!!
Maybe next time you'll read a post properly before attempting to answer an enquiry. ("My question is: can the 'growth' be removed easily by a vet? My very ignorant understanding of the condition is an oil blockage that has solidified - am I close? If this is the case and taking into account how firm the vet handled the lump, is it not possible to simply break/twist it off?")
I'll try elsewhere for an answer thanks......