A case of surgically resected synchronous lung cancer and hilar lymph node metastases from unknown primary site

Abstract

A 70-year-old woman complaining of cough was admitted to our hospital. Chest X-ray and CT demonstrated a tumor, 3.5cm in diameter, on the left S⁶ and swelling of lt. hilar lymph node. A transbronchial biopsy from the S⁶ tumor revealed adenocarcinoma. On October 31, 2001, the patient underwent left lower lobectomy and regional lymph node resection. Pathological examination showed that the pulmonary tumor was moderately differentiated adenocarcinoma (p-T2NOMO stage IB) and the hilar lymph nodes (#10, #11, #12) showed small cell carcinoma (p-TON1M0 stagell A). The patient received adjuvant chemotherapy and is well without recurrence 22 months after surgery.