Parole chiave
Poncet Disease, sterile polyarthritis, tuberculosis
Abstract
Poncet’s disease is a rare, non-erosive reactive arthritis associated with active extrapulmonary tuberculosis, with fewer than 200 reported cases. Diagnosis is clinical and requires exclusion of septic tuberculous arthritis and autoimmune diseases. We report a 62-year-old man with tuberculous lymphadenitis who developed symmetrical inflammatory polyarthritis one month after starting antituberculous therapy. Imaging excluded erosive disease, and autoimmune serology was negative except for low-titer antinuclear antibodies. Symptoms rapidly improved with low-dose corticosteroids while antituberculous treatment was continued, avoiding unnecessary immunosuppressive therapy and supporting the diagnosis of Poncet’s disease.