Question

A 50-year-old man presents with 3 months of progressive low back pain that improves with exercise and worsens with rest. He has morning stiffness lasting 1 hour and limited spinal flexion. HLA-B27 is positive. What is the MOST likely diagnosis?

Accepted Answer

Ankylosing spondylitis

Answer

Mechanical low back pain

Answer

Lumbar spinal stenosis

Answer

Metastatic prostate cancer

Answer

Osteoporotic vertebral fracture

Practice question

A 50-year-old man presents with 3 months of progressive low back pain that improves with exercise and worsens with rest. He has morning stiffness lasting 1 hour and limited spinal flexion. HLA-B27 is positive. What is the MOST likely diagnosis?