|ECR 2018 / C-0811|
|Thymus and ectopic thymus image findings: an important cause of pitfalls in the paediatric age.|
Before a solid or cystic mass of cervical location,
mainly on the left side,
the diagnostic possibility of ectopic thymic tissue must be taken into account,
and the mistake of thinking about malignant tumor pathology,
which is the most frequent (more rarely the ectopic thymic tissue goes into other locations than the cervical).
In addition to histology, which provides the diagnosis of certainty, imaging tests have a very important role.
The radiologist must know the possible variations in the position and appearance of the normal thymic tissue to give a more or less certain diagnosis of the process that takes place, so that in some cases it is clear (although a biopsy is needed) that it is a thymus, and in others since the imaging tests it seems that it is a different lesion of the normal thymic parenchyma.