The causes of an anterosuperior mediastinal mass can be remembered by using the mnemonic:
T: thymus-see primary tumours of the thymus
T: thyroid-see primary tumours of the thyroid
T: thoracic aorta-see causes of a dilated thoracic aorta
T: terrible lymphoma
T: teratoma and ...
Chest x-ray lines and stripes are important to recognise on chest radiographs.
Lines are usually less than 1mm in width and are comprised of tissue outlined on either side by air and typically represent pleural-covered structures within the middle and superior mediastinum 1, 2:
The right paratracheal stripe is a normal finding on the frontal chest x-ray and represents the right tracheal wall, adjacent pleural surfaces and any mediastinal fat between them. It is visible because of the silhouette sign created by air within the trachea medially and air within the lung lat...
The posterior wall of bronchus intermedius is a stripe formed by the interface of the posterior wall of bronchus intermedius and the air within the azygo-oesophageal recess 1.
It normally measures between 0.5-2mm in thickness but is not considered abnormally thickened until it measures greater ...
The chest radiograph zones are useful when describing the location of pathology on a frontal chest radiograph.
The chest radiograph is a 2D representation of a 3D structure. Since the interfaces between the lobes are orientated obliquely, it is often not possible to determine which lobe patholo...
The chest radiograph (CXR) is the most ubiquitous radiological investigation.
The chest radiograph is performed for a broad content of indications including but not limited to 1-4:
suspected pulmonary embolism
investigation of ...
The posterior junction (junctional) line is formed by the opposition of the pleural surfaces of the posteromedial surfaces of the upper lobes of the lungs, posteriorly to the oesophagus but anterior to the thoracic spine (usually T3-T5) 1, 2.
There are many causes for an abnormal appearance of ...
The left paratracheal stripe is formed by the interface of the medial pleural surface of the left upper lobe and left lateral border of the trachea and/or or the fat adjacent 1 with air within each structure forming the outline. It may not be visible if the left upper lobe contacts the left subc...