Tumor often grows early into neighboring organs and into bone/cartilage. The extent of spread depends on the anatomical region.
10–15 % have lymphatic spread at the time of diagnosis.
Distant metastases are relatively rare at the time of diagnosis (± 2 %), but in cases of distant metastasis, the lungs are the most common localization. The presence of distant metastasis makes cure unlikely, but palliative treatment may prolong survival and diminish symptoms.