This 3D model captures an oncocytic thyroid adenoma (Hürthle cell adenoma), showing a solid, well-circumscribed neoplasm composed of large polygonal cells with abundant eosinophilic, granular cytoplasm. It illustrates the characteristic oncocytic transformation, reflecting mitochondrial hyperplasia, and emphasizes that while this lesion is benign, its cellular atypia and solid growth pattern can complicate cytological interpretation and necessitate surgical excision for definitive diagnosis.
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