The radiological appearances of plasma cell granuloma of the lung.

The clinical, radiological and pathological features of plasma cell granuloma in 4 patients are presented. The natural history of the condition is benign. 30% of cases occur in children. The radiological appearances are not specific and consist of an intrapulmonary mass which is not accompanied by pleural effusion. Tomography is helpful in demonstrating calcification and cavitation, but these features are unusual. Successful treatment requires surgical removal.