Validation of the International Medullary Thyroid Carcinoma Grading System in Patients with Distant Metastases
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Background: The International Medullary Thyroid Carcinoma Grading System (IMTCGS) is a two-tier score that classifies high-grade medullary thyroid carcinoma (MTC) by the presence of at least one of the following features: mitotic index ≥5/2 mm2, Ki-67 prolife... ...
