Hosting 728 files, 2951 images, and 4 contributors.

Random Case

Osteoid osteoma
Heather Borders, MD
over 9 years ago
Enter A Workflow
Standard2   Academic2

Please choose a workflow. A standard workflow allows you to browse the repository with full case detail; the academic workflow allows you to browse the repository with limited case detail revealed. Double click on the images to launch image viewer.

ARSt Case Repository

Retropharyngeal Thymus

Case Detail

Anatomy: Neck-Face
Joseph Junewick, MD FACR
Diagnostic Category: Normal variant
Created: over 3 years ago
Updated: over 3 years ago
Modality/Study Types:
Adobe32 PDF Imagej32 ImageJA


2 year old male with pharyngeal mass noted during tonsilectomy

Case Images


Retropharyngeal Thymus


MR _ Sagittal and axial T2 images of the neck show a circumscribed lentiform retropharngeal hyper intense lesion.


Thymus is the latinized form of the greek thymos meaning the origin of the soul and spirit. It is gill derivative evolutionarily first seen in sharks, thought to have an osmoregulatory function. It forms from the 3rd and 4th pharyngeal pouches at about 7-8 weeks comprised of ectoderm, endoderm, mesenchyme and neural crest cells. Aberrant thymus anywhere from mandible to diaphragm.


Shah S. Retropharyngeal aberrant thymus. Pediatr (2001); 108:e94

Corporate Office: 616.363.7272, 3264 North Evergreen Drive, Grand Rapids, MI 49525

Spectrum Health Helen Devos Childrens Hospital GE HealthCare