8months old, American bully, Female
History: pain, jaw swelling.
Findings: Periosteal new bone formation, palisading type, affecting the mandible bilateral.
The tympanic bullae and temporomandibular joints are not affected.
Diagnostic: Craniomandibular osteopathy.
Discussion: Craniomandibular osteopathy is a non-neoplastic, proliferative bone disease that affects primarily the mandible, tympanic bullae, frontal bone and occasionally long bones in dogs of about three to eight months.
The proliferation of new bone of the head and jaws decreases as the endochondral ossification of the long bones slows after 7 to 8 months of age.