Gemcitabine in Treating Patients With Advanced Salivary Gland Cancer That Cannot Be Removed During Surgery

The purpose of this study is to see how patients with incurable salivary gland cancer, who have not had chemotherapy before, respond to Gemcitabine. The investigators are trying to find out what effects (good and bad) Gemcitabine has on participants and salivary gland cancer. Gemcitabine has been shown to be an effective chemotherapy agent in other types of cancer, including; bladder cancer, breast cancer, certain types of lung cancer, ovarian cancer, and pancreas cancer. Gemcitabine has yet to be studied for efficacy in subjects with salivary gland cancer and in general other chemotherapy drugs have shown to be ineffective so far in this population.