I had basal cell carcinoma on my left arm. The MD did a punch biopsy, which came out positive for cancer in the margins (around the outer edges of the punch). After the spot healed from the punch, I used Cansema on the spot, and the black salve bubbled up and attacked two spots on the sides of where the biopsy was done. These eventually crusted over and fell off, leaving red marks.
Since there was an identified cancer from the earlier tests, we did another removal of the surrounding tissue (large scar remains), and NO cancer was found.
Seems to me that the Cansema worked.
For whatever it's worth, I have used a frequency modulated plasma lamp (Rife device) for several years, and that spot would usually stay inactive - during a routine scan and removal of a bunch of moles did the MD decide that spot needed to come off.
Dave - So. Calif.