Growing teratoma syndrome successfully treated with lymphoblastoid interferon.

In most instances mature teratoma can be successfully resected following chemotherapy for advanced testicular cancer. However, some patients may eventually die because of uncontrollable local growth of an unresectable growing mature teratoma. This is a report on a patient with an unresectable growing mature teratoma in whom a long-lasting disease stabilization was achieved after treatment with lymphoblastoid interferon.