Xin Li

Primary mediastinal ectopic thyroid in a 43-year-old woman

Rationale: Primary mediastinal ectopic thyroid (PMET) is exceedingly rare, and its imaging features often overlap with those of thymic epithelial tumors, lymphoma, Castleman disease, and paraganglioma. The absence of anatomical continuity with the cervical thyroid and the presence of an independent intrathoracic blood...