My 5 year old lurcher has had a lump under his chin towards the back on and off for about 3 weeks. He's had antibiotics and anti inflams from our vet and it went down. They anaesthetised him and had a look, had a set of head xrays but coudn't find anything amiss.
It's now back worse than before 
. More medication form our vet but they have referred him to the Frodsham specialized practice for possible MRI and surgery. Our vet also said if it's not a stick injury it could be a tumour. Does anyone have any positive stories or experiences of this?