Achalasia (mega-esophagus); a condition capable of simulating mediastinal neoplasm.
D003937:Diagnosis, Differential; D004931:Esophageal Achalasia / Q000175:diagnosis*; D006801:Humans; D008479:Mediastinal Neoplasms; D008482:Mediastinum
CARDIOSPASM/differential diagnosis; MEDIASTINUM/neoplasms