CTICasesRheumatoid Arthritis with Necrobiotic Nodules
Imaging findings
Chest radiograph and CT show multiple cavitating pulmonary nodules of varying sizes. Hand radiographs show osteopenia and periarticular joint space narrowing, and cervical spine radiographs show increased atlantoaxial joint space on flexion, representing transverse ligament laxity and subluxation.
Key takeaways
Necrobiotic nodules are a classic, benign thoracic manifestation of rheumatoid arthritis, appearing as cavitating or non-cavitating subpleural nodules. Recognition of systemic manifestations, such as atlantoaxial subluxation and typical hand arthropathy, is crucial in establishing the diagnosis.
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