White bump on nose tip after Septorhinoplasty - what should I do? (photos)

The white bump on the tip of your nose looks like a cartilage "bossa". Depending on your examination, microdroplet Silikon-1000 injections may be considered to permanently camouflage your visible tip cartilage. Hope this helps. Dr Joseph

Considering that lump is growing, very likely that you developed inclusion cyst. Other possibility may be deformity due to cartilage shape change after tip cartilage shaping suture "fails'. It would be in your best interest to see your rhinoplasty surgeon and ask for opinion and treatment. Good luck.