ectopic hamartomatous thymoma
ectopic hamartomatous thymomaA rare tumour of the soft tissues of the neck thought to derive from branchial arch tissue, which histologically resembles fetal, mature, or involuted thymus and mediastinal thymomas and ranges from completely benign to metastasisingly malignant.
Affects adult males.
Recurs, but doesn’t metastasise.
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