The study is designed for patients with skin melanoma and lymph node micrometastasis previously diagnosed by a sentinel node procedure. As a result of their diagnosis, the patients are scheduled for lymph node dissection. Before this is done, patients are vaccinated with antigenic peptides. The peptides are mixed with the adjuvant SB AS-2 or Montanide and injected in a lower limb not affected by the disease. The skin site of vaccine injection is marked with a permanent pen where, two weeks later, patent blue and 99technetium is injected. These markers allow one to locate the vaccine site sentinel node (VSSN) which will be removed during the lymph node dissection at the diseased limb.
The aim of the study is to test whether the vaccine has induced an immune response in the lymph node that drains the vaccine site.
