change in the size, shape, color, or feel of an existing
mole. An asymmetrical mole with irregular borders and
different color that is increasing in size (larger than 5
mm) should arouse suspicion.
may also appear as a new mole that might be abnormal
and scaling over an existing mole might be an early sign of
later stages the mole might become hard, lumpy and sometimes
may bleed or ooze.
following stages are used for melanoma:
0: In stage
0, the melanoma cells are found only in the outer layer of skin
cells and have not invaded deeper tissues.
in stage I is no more than 1 millimeter thick. The outer layer
(epidermis) of skin may appear scraped (ulceration). Or, the
tumor is between 1 and 2 millimeters thick but there is no
ulceration. The melanoma cells have not spread to nearby lymph
tumor is at least 1 millimeter thick. The tumor is between 1 and
2 millimeters thick with ulceration. Or, the thickness of the
tumor is more than 2 millimeters. There may be ulceration. The
melanoma cells have not spread to nearby lymph nodes.
melanoma cells have spread to nearby tissues but not to lymph
nodes or the melanoma cells have spread to one or more nearby
melanoma cells spread to other organs (distant metastasis), to
lymph nodes, or to skin areas far away from the original tumor.