CTICasesEctopic Parathyroid Adenoma and Zenker's Diverticulum
Imaging findings
Sestamibi scan shows mediastinal activity posterior to the trachea. Contrast CT shows a hypervascular soft tissue mass in the middle mediastinum, located immediately inferior to a Zenker's diverticulum containing oral contrast.
Key takeaways
Ectopic parathyroid adenomas can occur in the middle mediastinum posterior to the esophagus. Their proximity to Zenker's diverticula can simulate a larger mass, necessitating careful multiplanar CT evaluation.
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