 [ Symptoms ] my husband had skin cancer and now has a cracked lip corner that is not healing could it be cancer has returned  my husbandhad skin cancer he now has a crack in corner of mouth that has not healed in 3 weeks can this be sign cancer has returned [ Disease ] i am sorry to hear about your husband is skin cancer that can certainly be a scary experience and you are wise to keep a close watch on his skin from now on the cracking at the corner of your husband is mouth probably is not cancer but since he is had a skin cancer once it would be a good idea to get it checked out by a health care provider often cracking at the corner of the mouth is a symptom of perleche or angular chelitis this can be caused by a fungus which can be treated by your health care provider or by a vitamin b deficiency however the symptom you are describing could be caused by many things including yes a cancer that is why it would be best for your husband to be examined by your primary care provider he or she can diagnose the problem and treat it accordingly good luck to you