The bone tumor seen in children with characteristic lamellated periosteal reaction with a mottled appearance and extension into soft tissue is which of the folllowing?

Surgery

The bone tumor seen in children with characteristic lamellated periosteal reaction with a mottled appearance and extension into soft tissue is which of the folllowing?

A tender swelling in submandibular triangle is mostly likely diagnosed as

In transfacial proportions, the face Is divided into how many segments:

Specific for Ankylosing spondylitis is true?