middle mediastinum


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mid·dle me·di·as·ti·num

[TA]
the large central portion of the inferior mediastinum, which includes the pericardium and the contained heart, as well as the phrenic nerves and cardiacophrenic vessels.
Synonym(s): mediastinum medium [TA]

middle mediastinum

the widest part of the mediastinum, containing the heart, ascending aorta, lower half of the superior vena cava, pulmonary trunk, and phrenic nerves. It is one of three caudal portions of the mediastinum. Compare anterior mediastinum, posterior mediastinum, superior mediastinum.
References in periodicals archive ?
5 cm in diameter) lymph nodes in the upper and middle mediastinum (figure 1).
In adults 65% of lesions arise in anterior mediastinum, 10% in middle mediastinum and 25% in posterior mediastinum.
In the present study 80% of the cases were located in anterior mediastinum, 13% cases located in posterior mediastinum and 7% cases located in middle mediastinum which was similar to a study by Vaziri et al.
Other common lesions were tubercular lesions like in anterior mediastinum adenopathy (four), middle mediastinum adenopathy (two), and paravertebral abscesses (three) in posterior mediastinum.
In this study, the most common location of mediastinal mass was anterior mediastinum (50%), followed by posterior mediastinum (36%) and middle mediastinum (14%).
However, in some of the metastatic lymph nodes in the middle mediastinum, the percutaneous approach cannot be used safely due to possible damage to surrounding anatomical structures.
The middle mediastinum includes all structures behind this line and anterior to a line drawn connecting a point on each vertebral body 1cm posterior to its anterior margin.
A small amount of air present in the anterior and middle mediastinum was attributed to the stab wound.
3] Masses of the middle mediastinum are typically congenital cysts while those arising in the posterior mediastinum are often neurogenic tumours.
Castleman's disease in the middle mediastinum demonstrates intense contrast enhancement with internal flow voids on MRI (Figure 13).
In our study of 50 cases of mediastinal masses, the anterior mediastinum was the most common compartment to be involved (52%) followed by posterior mediastinum (30%) and middle mediastinum (18%).
Also, esophageal cancer can occur as a primary malignancy of the middle mediastinum (Figure 9).