<unk>  may be classified according to location of the outgrowth into 3 groups that include enchondroma, periosteal<unk>  and synovial<unk> .
Chondroma classification
Hemangioma classification
Dermoid cyst classification
Lymphangioma classification
Teratoma classification
Germinoma classification
Hamartoma classification
Rhabdomyosarcoma classification