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Tumour necrosis factor (TNF)-α inhibitors, despite being an effective treatment for granulomatous diseases such as sarcoidosis and Crohn's, are recognised to trigger a paradoxical granulomatous response.1 ,2 Reported cases have predominantly described lymph node, pulmonary and skin manifestations. We present a case of a granulomatous thoracic spine lesion, leading to atraumatic fracture, arising as a consequence of etanarcept treatment of connective tissue disease with associated interstitial lung disease (ILD).
Dr C Sharp (StR)
A 50-year-old woman, a retired hairdresser, with rheumatoid arthritis/Jo-1 overlap syndrome, diagnosed 14 years earlier, and with associated but hitherto stable ILD, was referred to the ILD service with progressive dyspnoea and deteriorating lung function. Other relevant medical history included febrile neutrophilic dermatosis. The patient reported smoking 10–20 cigarettes per day, but had had no occupational or animal exposures and no past exposure to tuberculosis. At presentation, there was marked joint destruction though no active synovitis, and systemic symptoms were well controlled with the anti-TNFα monoclonal antibody etanercept which had been commenced in 2006. Prior to commencement of the etanercept, a Heaf test had been negative. There was no history of significant corticosteroid usage. Respiratory examination was remarkable only for fine bi-basal inspiratory crackles.
Pulmonary function tests in January 2006 demonstrated a forced expiratory volume in 1 s (FEV1) of 2.62 L (95% predicted), forced vital capacity (FVC) 3.27 L (105% predicted), with diffusion coefficient for carbon monoxide (DLCO) 5.08 mL CO/Min/mm Hg (60% predicted). At presentation to the ILD service in May 2010, the values had fallen to FEV1 2.02 L (78%), FVC 2.53 L (86%) and DLco 3.73 (44%).
Autoimmune profile demonstrated a positive rheumatoid factor (99 IU/mL), a positive antinuclear antibody and the presence of anti-Ro, anti-La and anti-Jo-1 antibodies. A high-resolution (HR) CT scan of the thorax and an echocardiogram were arranged.
Dr A Spiers (Consultant Thoracic …
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