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1 The Department of Surgery, George Washington University School of Medicine, Washington, D. C.
1. Lymphangiomas confined to the mediastinum are rare.
2. Mediastinal lymphangiomas are probably due to development defects of the primitive jugular sacs.
3. The mass is closely adherent to surrounding structures and may contain smooth muscle, fat, nerves, blood vessels, and connective tissue.
4. Mediastinal lymphangiomas, being a rather symptomless disease, are usually discovered by roentgenograms. [SEE FIGURE 4 IN SOURCE PDF.]
5. Exploratory thoracotomy is indicated once the lesion is found to establish a tissue diagnosis and to extirpate the mass.
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