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Angiolymphatic Malformation
Joseph Junewick, MD FACR
over 7 years ago
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Retropharyngeal Thymus

Case Detail

Anatomy: Neck-Face
Junewick
Joseph Junewick, MD FACR
Diagnostic Category: Normal variant
Created: 8 months ago
Updated: 8 months ago
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History

2 year old male with pharyngeal mass noted during tonsilectomy


Case Images


Diagnosis

Retropharyngeal Thymus

Findings

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

Discussion

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.

Reference

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



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