A rare case of pulmonary adenoid cystic carcinoma with liver metastases treated effectively with stereotactic body radiation therapy

Abstract Pulmonary adenoid cystic carcinoma (PACC) is an extremely rare neoplasm. Adenoid cystic carcinoma (ACC) usually occurs in the salivary glands of the head and neck. Given its rare occurrence, there are no established guidelines for the treatment of progressive and/or relapsed disease. We herein report a case of a 57‐year‐old female who was incidentally found to have biopsy confirmed PACC following trauma diagnostic workup. She underwent pneumonectomy and adjuvant radiation therapy with an initial good response. On follow‐up a year later, she was noted to have two metastatic liver lesions treated with stereotactic body radiation therapy (SBRT) and lenvatinib. This case report adds to the growing area of research on PACC, especially among patients requiring SBRT for oligometastatic disease.