Abstract 143: Sentinel Lymph Node Biopsy in Perineal Melanoma: A Surveillance Epidemiology and End Results Program (S.E.E.R.) Study

PURPOSE: Current management of melanoma focuses on excision with the potential for lymph node evaluation depending on factors such as Breslow depth and ulceration status. The value of sentinel lymph node biopsy (SLNB) is well established in providing prognostic information, as patients with positive sentinel lymph nodes have worse survival outcomes. However, the option to pursue SLNB has not shown to provide any therapeutic benefits in improving survival. Anatomic specific locations for melanoma have been superficially evaluated, and to our knowledge there is no such literature surrounding SLNB in the perineum. Therefore, the purpose of this study is to evaluate the presence of a therapeutic benefit for SLNB and identify risk factors conferring reduced survival in patients with perineal melanoma