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A heteogeneously enhancing soft tissue tumor mass originating from surface of outer cortex of right ramus of mandible. Lesion extended from anterior to posterior border of ramus anterio-posteriorly. Tumor involved coronoid process, condylar process and ramus of mandible causing surface erosions. The involved bone shows abnormal spiculated periosteal elevation which is radiating outwards. The soft tissue component shows fine calcifications. The mass is abutting and displaceing parotid gland laterally and pterygoid muscles medially without visible invasion of these structures. Imaging features are suggestive of osteosarcoma of mandible.