Which classification system is used to stage melanoma?

The Breslow thickness is a critical classification system used to stage melanoma. It measures the depth of the tumor in millimeters from the top layer of the skin down to the deepest point of invasion. This depth is a significant prognostic factor, as it correlates with the likelihood of metastasis and overall survival rates. The thicker the melanoma, the higher the risk of spread, making Breslow thickness an essential tool for assessing prognosis and determining treatment options.

While the TNM classification system, which considers tumor size, lymph node involvement, and metastasis, is also pertinent in staging various cancers, Breslow thickness is specifically tailored to melanoma. The FIGO staging system is primarily used for gynecological cancers, and the Clavien-Dindo classification is utilized to grade surgical complications, neither of which apply to melanoma staging. Therefore, the Breslow thickness remains the standard and most relevant method for assessing melanoma staging.