11. Extension of the mediastinal air to the subcutaneous tissues via the fascial planes may lead to subcutaneous emphysema. 12. Eventually Dr Harrington developed an international reputation in the diagnosis and treatment of diaphragmatic hernias and mediastinal tumors. 13. EUS can easily sample celiac lymph nodes, which cannot be reached by the other mediastinal staging methods. 14. Many signs and symptoms of a mediastinal tumor do not distinguish between these two principal classes of mediastinal tumor. 15. Many signs and symptoms of a mediastinal tumor do not distinguish between these two principal classes of mediastinal tumor. 16. So far, these antibodies appear to be associated with an accompanying ovarian or mediastinal teratoma expressing NMDA receptors. 17. The mediastinal surface of the left lung has a large " cardiac impression " where the heart sits. 18. The mediastinal pleura attaches to the other organs in the mediastinum and forms the separating lateral wall. 19. In selected clinical situations confirmation of the results of the status of the mediastinal nodes by sampling will therefore be necessary. 20. The end of the left arch is now further dissected from the mediastinal tissues for relief of any remaining constricting mechanism.