Prognostic Significance of Carcinoembryonic Antigen Level in Pleural Lavage Fluid for Patients With Lung Adenocarcinoma

An elevated lavage carcinoembryonic antigen level is an independent prognostic determinant for patients with lung adenocarcinoma, even with advanced disease, and may be a more useful marker of subclinical microdissemination than pleural lavage cytology.