Acral lentiginous melanoma is a form of cancer that attacks the palms, soles as well as under nail beds. This is a deadly type of cancer and is mostly found in Asians, African-Americans, and Hispanics. Acral melanoma mostly favors individuals of darker skin tones.
Acral melanoma is not caused by sun exposure and is twice as likely to recur. When it recurs, it is usually found in skin tissue near the original malignancy and may be more aggressive. Researchers at NYU Langone Medical Center have noted that small tumors may recur 28% of the time while large tumors may recur at a rate of 64%.
To read more on this topic, click on the following link:
Rare skin cancer on palms, soles more likely to come back compared to other melanomas”. (2014). Science Daily. Retrieved June 6, 2014, from: http://www.sciencedaily.com/releases/2014/05/140529100721.htm