We evaluated the diagnostic accuracy for differentiating MM from LC using the following parameters: pleural CEA <6.0 ng/mL, pleural HA >30,000 ng/mL, pleural CEA <6.0 ng/mL, and HA >30,000 ng/mL (Table 2). This evidence concerns the gene CEACAM5 and laryngotracheoesophageal cleft.