Good Morning Dr. Herazy,
I have noticed a soft lump/bump/cyst growing in my right knuckle which I ignored for years but it is growing/spreading around the bone/joints of my fingers ; small whitish lumps. I will see a physician here too. I am 57 years old .
As you describe your situation it does not sound like you have Dupuytren’s contracture.
Your description mentions a growth of some type “in the knuckle” which is much different than the usual way of describing the problem as a nodule, lump or bump in the palm of the hand. You also note that this lump in the knuckle is spreading around the joints of several fingers which is not a typical description of Dupuytrens.
Good luck with your problem. Please let me know what you find out. TRH