Any suspicious moles or skin lesions should be examined by your
doctor and may require referral to a dermatologist
(physician with specialized training in diseases of the skin). Skin biopsy (removal of the lesion, or a piece of it, for
testing) is a simple procedure and is done routinely in the doctor's
office. For advanced melanomas, other testing may include chest x-ray,
computed tomography (CT) scan, magnetic resonance imaging (MRI), positron
emission tomography (PET) scan, or bone scan. These tests look for possible
spread to other organs.