the term "abnormal" is quite vague. it simply means "not normal". when it comes to a biopsy the most important question would be if this lesion was cancerous or not. some lesions are read as abnormal when they are precancerous lesions. you will need to get a more thorough explanation from your medical provider ask for your exact pathological diagnosis and then inquire about the next step. this could involve excising the lesion wider and more completely various treatments or just watchful waiting. all you really know now is that your biopsy was "abnormal". you need much more information from your medical provider.
what could it mean if a biopsy from a lesion that has been removed from the arm comes back abnormal?