This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
The following diseases are associated with HLA B27 and uveitis Except 
Select and explain. 
A. Bechet's syndrome, B. Reiter's syndrome, C. Psoriasis, D. Ankylosing spondylitis
A: Bechet's syndrome
Answer: A: Bechet's syndrome 
Explanation: Features of seronegative spondyloahroahropathiesOnset usually before 40 yearsAbsence of RA factorHLA- B27 positivePresence of uveitisExamples:- ankylosing spondylitis, Reitter's syndrome, Psoriatic ahritis, enteropathic ahritis, Reactive ahritis.(Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 302, 426)