A 24 yr old man presented with retroperitoneal, necrotic, heterogenous enhancing mass on CT near the hilum of the left kidney. What is the most probable diagnosis

Surgery

A 24 yr old man presented with retroperitoneal, necrotic, heterogenous enhancing mass on CT near the hilum of the left kidney. What is the most probable 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?