This poster is published under an
open license. Please read the
disclaimer for further details.
Type:
Educational Exhibit
Keywords:
Thorax, Mediastinum, Respiratory system, Conventional radiography, CT, MR, Statistics, Epidemiology, Education and training, Neoplasia
Authors:
E. Salinas, L. K. Cifuentes, D. Sossa, B. Pinzon; Bogotá/CO
DOI:
10.1594/ecr2016/C-1612
Background
Chest X-ray is a test that is frequently requested.
To identify mediastinal disorders is a priority in the semiotic approach.
Mediastinal silhouettes disturbance allow tosuspect a disease when an altered morphology and composition is presented.
Each of the detected alterations are correlated with characteristics of mediastinal spaces lesions.
When one considers the semiotics of mediastinal lesions,
their location in the anterior ,
medium or posterior compartment and the 3 most common diseases,
the possibility of an etiologic diagnosis increases(1).
To identify mediastinal lesions is essential to know the mediastinal silhouettes.
These silhouettes can be divided into lines,
bands or interfaces.
Mediastinal references may be the result of the continuity of mediastinal,
pulmonary and spinal structures or can be a visual effect as the Mach lines.
The absence,
thickening or displacement of one or more lines,
bands or mediastinal interfaces can mean a mediastinal lesion.
The most frequently displayed lines are the paratracheal line and right paraspinal line (3).
The other mediastinal references are displayed in varying percentages in the chest radiograph. (Table 1)
![](https://epos.myesr.org/posterimage/esr/ecr2016/132685/media/657797?maxheight=300&maxwidth=300)
Fig. 1: Frequency of lines, bands and mediastinal interfaces (3)