According to the WHO, the incidence of melanoma is 199,627 worldwide in 2008, of which the melanoma-in-transit is about 4%. When melanoma spreads, it does so by the lymphatic system which drains to the regional lymph nodes. Uncommonly, melanoma can become trapped in the lymphatic vessels and grow to cause tumor nodules in the skin and subcutaneous tissues between the primary site and the regional lymph node basin. These nodules are termed in-transit metastases and carry an ominous prognosis. The American Joint Committee on Cancer (AJCC) defines such in-transit metastases as any skin or subcutaneous metastases that are more than 2 cm from the primary lesion but are not beyond the regional nodal basin. The 2010 tumor node metastasis (TNM) staging system considers the melanoma-in-transit a N2c stage when they arise in the absence of nodal metastases.