Final answer:
The two primary differences between a normal mole and a mole with melanoma are asymmetry (where two halves of the mole do not match) and irregular borders, along with variation in color and a tendency to be larger and change over time.
Step-by-step explanation:
Melanoma and normal moles differ notably in their symmetry and borders. While a benign mole is typically symmetrical with well-defined, smooth edges, a melanoma presents with asymmetry, meaning the two halves don't match, and irregular, often notched or scalloped borders. Moreover, melanoma can exhibit a heterogeneity in color featuring varied shades of brown or black, unlike a uniform color seen in normal moles. Another critical difference is the diameter; melanomas are generally larger than 6mm unlike most benign moles, and they also show a trait of being evolving; changing in size, shape, or color over time.
Treatment for melanoma typically includes surgical excision and immunotherapy, reflecting its serious nature as the most fatal of all skin cancers due to its potential to metastasize. If you observe any of these melanoma signs or any changes in existing moles, it is imperative to consult a doctor for a professional diagnosis.
There are two main differences between a normal mole and a mole that has developed melanoma:
Asymmetry: A normal mole is typically symmetrical, meaning that if you were to draw a line through the middle, both sides would look almost identical. However, a mole that has developed melanoma is often asymmetrical, meaning that one side may look different from the other.
Irregular Borders: A normal mole usually has smooth and well-defined borders. On the other hand, a mole that has developed melanoma often has irregular, jagged, or blurred borders.
These two differences are important indicators that a mole may be cancerous, as they can help doctors identify melanoma early on and provide appropriate treatment.