PT - JOURNAL ARTICLE AU - A Cavazza AU - M Paci AU - E Turrini AU - R Dallari AU - G Rossi TI - Fungus colonisation of pulmonary rheumatoid nodule AID - 10.1136/jcp.56.8.636 DP - 2003 Aug 01 TA - Journal of Clinical Pathology PG - 636--637 VI - 56 IP - 8 4099 - http://jcp.bmj.com/content/56/8/636.short 4100 - http://jcp.bmj.com/content/56/8/636.full SO - J Clin Pathol2003 Aug 01; 56 AB - This report describes a 69 year old woman, suffering from active rheumatoid arthritis since the age of 60 and presenting with severe dyspnoea and cough. A computed tomography scan of the chest showed multiple bilateral pulmonary nodules, sometimes cavitated, associated with reticular opacities and pleural effusion. A videothoracoscopic excision of a cavitated nodule was performed. Seven days after surgery, a right pneumothorax developed, and the patient died of septicaemia one month later. Microscopically, the excised nodule was composed of necrotic fibrinoid material with a peripheral rim of palisaded histiocytes, extending to the pleural surface and containing several fungal hyphae morphologically consistent with aspergillus. A diagnosis of pulmonary rheumatoid nodule with fungus colonisation was made. In the lung, fungus colonisation is a rare complication of rheumatoid nodules. The most important differential diagnostic considerations are briefly discussed.