I have a lump under on the left side of my nose . It has been there some time near the tip. Now in the last few days a sore has come up inside the nostril . They are not. in the same exact area. Could it be cancer? Could it be cancer and a different problem? I have been exposed to hpv and I have had an infected sore before and used mupirocin to treat it. This feels different and mupiricin isnt helping.