I've had 9 BCC removed over the past few years. Recently I had a wart removed off my right chest and my derm had it biopsied. I had left voicemails for the results but no return calls. I assumed (my bad) that it was nothing, until I received a letter eight months later stating it was Squamous cell. I went back and we could not locate the spot of the biop so they put me on Efudex twice daily over my whole chest area. I've been on efudex for two weeks now but there have been no results. Some burning sensation the first few days but no redness or inflammation at all. My derm was quite shocked to see no reaction after two weeks and has me using it for another two weeks. I realize the biop may have removed the SCC entirely but why no reaction?