Following (necessary) abdominal surgery five years ago, I developed a deep cyst (began 1/2 inch under the skin) at the incision site -- on a whim put Vick's on it for 3 days and the contents moved up through the tissue. 3-4 days later it came to a head (was a real medical event!) Cleaned repeatedly with alcohol, never recurred.
5-6 days ago I found a small lump in my breast, at about an inch under the surface. Hit the Vicks again and after a day and a half it started moving up, came up to various ducts at the surface -- completely gone where I had felt a solid lump. Then no movement for a couple days, a little uncomfortable. Put organic progesterone cream on it and it appears to be gradually working but I'll try some other things to move it along, thanks to this site.
Really I think it is a disgrace that this kind of quick no-harm preliminary tactic is not widely known and medically advised. I understand dog breeders are using Vick's on cysts -- why in the world don't we hear about it??!