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Frequency of head and neck metastatic tumors at Iran Cancer Institute (1991-2011) according to the type of cancer
| Type of cancer | Frequency | % |
|---|---|---|
| Squamous cell carcinoma | 7 | 41 |
| Adenocarcinoma | 5 | 29.5 |
| Melanoma | 2 | 11.8 |
| Lobular Carcinoma | 2 | 11.8 |
| Papillary Carcinoma | 1 | 5.9 |
| Total | 17 | 100 |
