[2] However, when symptoms do occur they are most commonly due to compression of nearby structures such as the trachea and esophagus.
[6][2] Ultrasound is the recommended diagnostic modality used to diagnose cervical ectopic thymus.
[3] Magnetic resonance imaging may be utilized as well to better characterize and identify the location of the ectopic thymus.
For cervical ectopic thymus, the differential diagnosis should include additional causes of neck masses.
[6][9] Surgical removal of the mass is the definitive treatment for ectopic thymus tissue that is causing symptoms.
The data supporting malignant transformation is limited, and ectopic thymus tissue that is not causing problems can likely be left to involute.
[12] With most ectopic thymus tissue being asymptomatic, it is likely the prevalence is higher than typically reported.