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Collapsing Glomerulopathy in a Patient with Tuberculosis and Poncet's Disease
Tayyibah Shah Alam1, Vinod Kumar2, Joe Thomas1
1Department of Rheumatology, Aster Medcity, Kochi, Kerala, India.
Abstract:
A 39-year-old woman presented with inflammatory polyarthritis, low-grade fever, progressive pedal edema, and frothy urination of three weeks duration. She had nephrotic range proteinuria and elevated creatinine. Kidney biopsy showed collapse of capillary tuft in the glomeruli and proliferation, hyperplasia, and hypertrophy of the overlying podocytes suggestive of collapsing glomerulopathy. Histology of the cervical lymph node showed necrotizing granulomatous inflammation suggestive of tuberculosis. With all other possible causes of polyarthritis ruled out, a diagnosis of Poncet's disease-a form of polyarthritis observed in patients suffering from an active form of extrapulmonary tuberculosis (TB)-was considered. Association between TB lymphadenitis and collapsing glomerulopathy (CG) is very rare, and the patient had partial remission of the disease after being started on anti-tuberculosis therapy (ATT) along with steroids.
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