Q1)) Most important prognostic marker in malignant melanoma?

a) Size

b) Thickness

c) Mitosis

d) Irregular margins

b) Thickness

Malignant melanoma spread in radial and vertical manner. As long as it is above the dermis, spread is contained. As soon as tumor cells breach the dermis, chances of lymphatic spread increase.

Breslow thickness index is more important for depth assessment

Bailey 26th - 596

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