Delayed pulmonary metastasis of adenoid cystic carcinoma originated from external earway: Case report

Pulmonary metastases in a 68-year old male was detected 20 years after the operation for adenoid cystic carcinoma originated from external earway. Adenoid cystic carcinoma metastases was confirmed by fine-needle aspiration biopsy from multiple mass lesions in right chest. The pulmonary metastasis of adenoid cystic carcinoma emerging from external earway after such a long period is a rare case in