<unk>  is a rare type of cartilaginous tumor. Rarely occur in the skull or skull base. Most cases are characterised by GRM1 gene fusion or promoter swapping. It can be associated with a translocation at t(1;5)(p13;p13).
Chondromyxoid fibroma
Collagenous fibroma
Cellular angiofibroma
Solitary fibrous tumor
Ameloblastic fibroma
Pleomorphic fibroma
Juvenile hyaline fibromatosis
Aggressive fibromatosis