Identification of Metabolic Phenotypes Associated With Melanoma Metastasis

This study is investigating the metabolic (energy-processing) characteristics of melanoma (skin cancer) tumors to understand how tumors spread. Tissue samples will be collected during biopsies or surgeries that are already planned, so no additional procedures are required. **You may be eligible if...** - You are 18 or older, of any race or ethnic background - You have a known or suspected malignant melanoma that requires surgical biopsy or excision as part of your regular care **You may NOT be eligible if...** - You are not a candidate for surgery - You have poorly controlled diabetes Talk to your doctor to see if this trial is right for you.