USMLE-Rx Step 2 Qmax Challenge #21592

Check out today’s Step 2 CK Qmax Question Challenge.

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A 62-year-old attorney presents to a primary care clinic complaining of chronic lower back pain and stiffness. He denies any history of trauma or strain to his back. He states that the stiffness is most severe in the morning and improves over the course of the day, especially after he exercises. Physical examination reveals decreased range of motion in the lumbar spine, as well as loss of natural lordosis. X-ray of the spine is shown in the image.

His condition is most likely associated with which of the following?

A. Anti-DNA antibodies
B. History of gonococcal infection
C. HLA-B27
D. Rheumatoid factor
E. Severe loss of bone density

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This practice question is an actual question from the USMLE-Rx Step 2 CK test bank. Get more Step 2 CK study help at USMLE-Rx.com.