A red soft to firm swelling on sternum that on biopsy shows following histology. What is the diagnosis?

Surgery

A red soft to firm swelling on sternum that on biopsy shows following histology. What is the diagnosis?

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?