Castleman's disease presenting as an asymptomatic solitary pulmonary nodule

We report the case of a 51 year old white woman with an asymptomatic solitary pulmonary nodule, fortuitously discovered on chest radiography. Her physical examination and biochemical tests were unremarkable for pathological findings. Thoracic computed tomography (CT) scan and nuclear magnetic resonance (NMR) spectroscopy confirmed the presence of a dishomogeneous thick lesion of lobular shape, localized between the middle and lower lobe of the right lung. Fibreoptic bronchoscopic examination failed to produce histological diagnosis of the lesion. Surgical removal of the lesion demonstrated intraparenchymal localization of Castelman's disease (giant lymph node hyperplasia). Three years after surgery, no sign of disease recurrence has been recorded.