Metastatic lung tumor of salivary pleomorphic adenoma occurring 25 years after surgical resection of the primary lesion; a case report

Abstract

A 40-year-old woman was admitted to our hospital with an abnormal shadow on the chest X-ray film. Chest CT scan revealed four mass shadows in the right lung. The differential diagnosis could not be made by bronchoscopy, and therefore a surgical procedure was performed. There were two tumors each in right middle and lower lobes, and they were enuclated. The pathological findings were consistent with salivary gland pleomorphic adenoma. The tumors were considered to be lung metastasis of the pleomorphic adenoma, originating in salivary gland which was resected 25 years ago.