Items tagged “mediastinum”

7 results found
Article

Differential for an anterosuperior mediastinal mass

An anterosuperior mediastinal mass can be caused by neoplastic and non-neoplastic pathology. As their name suggests, they are confined to the anterior mediastinum, that portion of the mediastinum anterior to the pericardium and below the level of the clavicles.  The differential diagnosis for a...
Article

Garland triad

Garland triad, also known as the 1-2-3 sign or Pawnbrokers sign, is a lymph node enlargement pattern on chest radiographs which has been described in sarcoidosis: right paratracheal nodes right hilar nodes left hilar nodes Hilar lymphadenopathy is symmetrical and usually massive. These so-ca...
Article

Thoracic aortic dilatation (differential)

There are a number of causes and mimics of thoracic aortic dilatation. Differential diagnosis senile ectasia hypertension post-stenotic dilatation, e.g. bicuspid aortic valve thoracic aortic aneurysm atherosclerosis (usually descending thoracic aorta) collagen disorders Marfan syndrome ...
Article

Panda sign (sarcoidosis)

The panda sign of sarcoidosis is a gallium-67 citrate scan finding. It is due to bilateral involvement of parotid and lacrimal glands in sarcoidosis, superimposed on the normal uptake in the nasopharyngeal mucosa. The presence of perihilar adenopathy adds the lambda distribution of increased up...
Article

Localized mediastinal malignant mesothelioma

A localized (solitary) mediastinal malignant mesothelioma is a rare variant of malignant pleural mesothelioma and is thought to arise from mesothelial cells of the pericardium. There are too few report cases to be dogmatic in regards to epidemiological or radiographic features. Differential d...
Article

Mediastinal teratoma

Mediastinal teratomas are germ cell tumors located in the anterior mediastinum. Epidemiology Mediastinal teratomas are the most common extra-gonadal germ cell tumors. They account for approximately 15% of anterior mediastinal masses in adults and approximately 25% of anterior mediastinal masse...
Article

Anterior mediastinal germ cell tumors

Germ cell tumors are one of the causes of anterior mediastinal mass, and any of the germ cell histologies may be identified. They can therefore be divided histologically into: seminoma non-seminomatous germ cell tumors (NSGCT) embryonal cell carcinoma choriocarcinoma yolk sac tumor teratom...

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