Which of the following forms Anterior boundary of Middle mediastinum?: (A) Sterno-pericardial ligaments, (B) Oesophagus, (C) Azygos vein, (D) Descending thoracic aoa
Answer is A. BOUNDARIES OF MIDDLE MEDIASTINUM: Anteriorly - sterno-pericardial ligaments Posteriorly - esophagus, descending thoracic aoa, Azygos vein On each side - Mediastinal pleura