My 57 year old friend had a parotid tumor removed about 3 weeks ago. Pathology said neuroendocrine cells, likely from a primary elsewhere. Whole body scan showed nothing else. Further treatment should start very soon. Doc refers to radiation group. But I think chemo is likely most appropriate. Anyone can help?

57 year old male friend had salivary gland removed with a 5cm tumor on June 7, 2013. A smoker. Pathology states "consistent with a metastatic small cell or neuroendocrine carcinoma of unknown primary." Margins appear clear. I'm trying to help get him into proper and prompt treatment.