superior mediastinum


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su·pe·ri·or me·di·as·ti·num

[TA]
part of the mediastinum lying superior to the horizontal plane intersecting the sternal angle and approximately the T4-5 intervertebral disc (that is, above the pericardium); it contains the arch of the aorta and the vessels arising from it, the brachiocephalic veins, and upper portion of the superior vena cava, the trachea, the esophagus, the thoracic duct, the thymus, and the phrenic, vagus, cardiac, and left recurrent laryngeal nerves.
Synonym(s): mediastinum superius [TA]

superior mediastinum

the upper part of the mediastinum in the middle of the thorax, containing the trachea, the esophagus, the aortic arch, and the origins of the sternohyoideus and the sternothyroideus. Compare anterior mediastinum, middle mediastinum, posterior mediastinum.
References in periodicals archive ?
Tuberculous lymphadenopathy of superior mediastinum causing vocal cord paralysis.
1, 2) displayed a large mediastinum, computed tomography showed 13x9x11 cm lobulating, heterogeneous hypodense mass in superior mediastinum that compressed left superior pulmonary vein (Fig.
It begins at the base of the skull and terminates in the superior mediastinum (1,2).
A method for inspection and tissue biopsy in the superior mediastinum.
For example, thymic extension into the superior mediastinum in patients with thymic hyperplasia and neurofibromas can both show FDG-avidity on the PET scan (Figure 18).
The imaging studies showed large tumor mass in anterior superior mediastinum with compression of the left main bronchus.
However, additional parathyroid glands may be located elsewhere such as in the neck or within the thymus in the superior mediastinum (1).
A contrast-enhanced computed tomographic (CT) scan of the neck and chest showed cervical subcutaneous emphysema, pneumomediastinum, and multiple pockets of accumulated turbid fluid over the neck, superior mediastinum, and bilateral pleural spaces (Fig.
Contrast-enhanced computed tomography (CT) demonstrated a low-attenuation mass arising from the floor of the neck and tracking into the superior mediastinum, causing significant compression of the right common carotid artery and the subclavian vasculature (figure, A).
A physician should begin investigating vocal cord paralysis by following the route of the vagus and recurrent laryngeal nerve on CT scans from the skull base to the superior mediastinum.
The chest radiograph revealed opacity in the right superior mediastinum.
11,12] They have been known to occur as high as the mandibular angle and as low as the thoracic inlet and superior mediastinum.

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