Final answer:
A flat lesion with a well-circumscribed change in skin color less than 1 cm can be characteristic of various skin conditions, including harmless moles or certain types of skin cancer. A thorough examination by a healthcare professional is necessary to determine the exact nature and significance of the lesion. Skin cancers, unlike moles, exhibit specific characteristics such as asymmetry, irregular borders, dark color, and larger diameter.
Step-by-step explanation:
A flat lesion with a well-circumscribed change in skin color less than 1 cm can be characteristic of various skin conditions, including harmless moles or certain types of skin cancer. It is important to note that a thorough examination and evaluation by a healthcare professional is necessary to determine the exact nature and significance of the lesion. Skin cancers, unlike moles, are typically asymmetrical, have irregular borders, may be very dark in color, and may have a relatively larger diameter. The ABCD mnemonic can be used to remember these characteristics: asymmetry, border irregularity, color variation, and diameter larger than 6 mm.