This dedicated collection of 3D models focuses on regional lymph node involvement classified as N1, encompassing metastasis to the central compartment (Level VI, N1a) and the lateral cervical compartments (Levels II-V, N1b). The visualizations reveal the characteristic structural alterations of metastatic lymphadenopathy, including nodal enlargement, loss of the normal reniform contour, and potential extracapsular extension with infiltration into surrounding soft tissues. By presenting these patterns of lymphatic spread, the category enhances the anatomical understanding of regional metastasis in thyroid carcinoma and underscores its critical impact on staging, prognosis, and the necessity for compartment-oriented lymph node dissection.
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