Ectopic thymus as a cause of Horner's syndrome

Margeaux L. Berroth, Lyudmila V. Morozova, Jeffery M. Pollock

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Ectopy of the thymus is a rare anomaly arising during fetal development, where the thymus does not make a complete decent into the thoracic cavity where it should involute in adolescence. The most common complications of an ectopic thymus include tracheal or esophageal compression presenting in childhood. This is a report of a single case of ectopic cervical thymus identified in a 2-month-old infant presenting with Horner's syndrome. Thymic ectopy should be on the differential when performing a radiologic evaluation of a neck mass when imaging characteristics are similar to thymic tissue.

Original languageEnglish (US)
Pages (from-to)23-25
Number of pages3
JournalRadiology Case Reports
Issue number1
StatePublished - Jan 2020


  • Ectopic
  • Horner's syndrome
  • Pediatrics
  • Thymus

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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