One of the deadliest forms of cancer is melanoma, a type of skin cancer. This aggressive disease often goes undetected or ignored by people in Massachusetts and across America until it is too advanced to be treated. Usually, a patient notices that a mole has formed or changed in appearance without any other symptoms. To determine whether the mole is cancerous, a doctor must observe it for certain features and, if it appears suspicious, cells must be biopsied. Accordingly, in order to catch melanoma, a patient is dependent on his or his doctor's abilities, and failure to make an accurate diagnosis can result in a poor outcome.