Which characteristic is observed in the physical finding of malignant melanoma?

Asymmetry is a notable characteristic observed in the physical examination of malignant melanoma. In contrast to benign moles or lesions, which tend to be symmetrical and uniform in appearance, malignant melanomas often display irregular shapes where one half does not mirror the other. This asymmetry can be an early warning sign suggesting malignancy, prompting further evaluation or biopsy.

When assessing skin lesions, the ABCDE criteria are often utilized, which stand for Asymmetry, Border irregularity, Color variegation, Diameter greater than 6 mm, and Evolving changes. Asymmetry as an indicator signals that the growth may have characteristics commonly associated with cancerous behavior. Hence, recognizing this asymmetrical trait can assist healthcare providers in identifying potential melanoma early on, leading to timely intervention and treatment.