Which of the following is a characteristic of malignant melanoma?

Malignant melanoma is characterized by an asymmetrical shape, which distinguishes it from benign moles and other skin lesions. When a mole or spot is asymmetrical, it means that one half does not match the other half in shape, indicating a potential irregularity that can be a warning sign of melanoma.

In contrast, benign moles are typically symmetrical, exhibiting balanced proportions on either side. This asymmetry in malignant melanoma can often be an initial indicator prompting a closer examination by a healthcare professional.

Uniform color and even borders are usually attributes of benign moles. Malignant melanomas often exhibit varied colors (such as brown, black, tan, or even red or blue) and regularly have irregular, indistinct, or notched borders. Characteristics such as being small and flat are also not typical of malignant melanoma, as these lesions can be larger and may come in various shapes and sizes. Understanding these distinctions is crucial for early detection and proper treatment of skin cancers.