口腔原發不明鱗狀細胞癌之頸部轉移－病例報告

Differential diagnosis of neck mass is a challenge to clicnicians and surgeons. It may be infective lymphadenopathy, congenital abnormality, benign tumor, or malignancy. The last one is the most serious and must be completely ruled out first. According to the practice guidelines, the cancer work-up includes detail history, physical examination, laboratory examinations, image study, fine needle aspiration cytology (FNA), guided biopsy, or open biopsy, to make a correct diagnosis. It is very important that the specimens are examined by experienced pathologist, when seeking the unknown primary. This report shows a case of metastatic neck tumor which was excised while no idea about the primary after thorough studies of the head and neck region plus whole body . After surgery, the primary was found to be a squamous cell carcinoma of the soft palate.