Which of the following is not seronegative spondyloarthropathy?: (A) Reiter's arthritis, (B) Ankylosing spondylitis, (C) Psorialic arthritis, (D) Rheumatoid arthritis
Answer is D. Seronegative spondyloarthroparthies are group of disorders with involvement of sacroiliac joint and associated with HLA-B27.
Rheumatoid arthritis doesn't belong to this group.