Unusual Presentation of Lymphoepithelioma-Like Carcinoma of Lung as a Thin-Walled Cavity

Most thin-walled cavities in the lung are benign lesions, but a few cases of lung cancer can have this unusual pattern. All previously reported cases were adenocarcinomas. Here we report a case of lymphoepithelioma-like carcinoma (LELC) of the lung presenting as a thin-walled cavity with a smooth inner surface. LELC is more commonly seen in Southeast Asia, including Taiwan, and its gross picture is usually a solid mass with a round, circumscribed border, which is indistinguishable from other non-small cell lung cancers. Asymmetric thickness of the cystic wall and lymphadenopathy are important features in the diagnosis and the selection of treatment. (C) 2013 by The Society of Thoracic Surgeons