The spread of facial tumours along bony canals.
D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D005147:Facial Bones / Q000473:pathology*; D005153:Facial Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000601:surgery; D008875:Middle Aged; D009362:Neoplasm Metastasis; D010027:Osteotomy; D012008:Recurrence; D012888:Skull Neoplasms / Q000473:pathology*