[Adenosquamous cell carcinoma of the lung with multiple cystic metastases in the liver].

A 70-year-old man was admitted to the hospital because of mild dyspnea, a cough, and hemoptysis. A chest X-ray film and a computed tomographic scan showed a mass in the S1.2 region of the left lung, and swollen mediastinal lymph noes. Cytologic examination of sputum sample resulted in the diagnosis of lung cancer. The tumor did not respond to chemotherapy, and the patient died after seven months. Autopsy disclosed a solid tumor of left lung and many cystic lesions in the liver. Histological examination of the lung lesion revealed adenosquamous cell carcinoma. Metastatic lesions in the liver consisted of adenosquamous cell carcinoma, with predominantly squamous cell carcinoma. Cases of lung cancer in which hepatic metastases have many cystic cavities are rare.