Plasma cell granuloma of the lung.

Plasma cell granuloma is an uncommon, nonneoplastic pulmonary lesion. An 11-year retrospective review of resected pulmonary tumors yielded six patients with plasma cell granulomas. Fine needle aspiration biopsy results were falsely positive for carcinoma in one patient. Adherence or invasion of the mediastinum was present in three patients. Granuloma in one patient, who underwent two operative procedures, was deemed unresectable at the initial thoracotomy. For both diagnostic and therapeutic reasons, early surgical excision is recommended for plasma cell granulomas of the lung.