<prompt> Which among the following is NOT a cause of calcification in anterior mediastinal mass?Lymphoma after radiotherapyAneurysm of ascending aortaGerm cell tumorLeiomyoma of esophagus  <response>: Ans: D Posterior mediastinum contents Mnemonic: DATES -- Descending aorta. Azygous vein and hemiazygos vein, Thoracic duct, Esophagus, Sympathetic trunkganglia. 