Columnar Cell Subtype of Papillary Thyroid Carcinoma Is Characterized By A High Frequency of High-Grade Tumors That Exhibit Aggressive Clinicopathologic Features and Poor Outcomes: A Multicenter Study of 71 Cases
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Papillary thyroid carcinoma, columnar cell subtype (PTC-CC) is a PTC characterized by nuclear pseudostratification and elongation. High-grade differentiated thyroid carcinoma is a novel classification of the WHO classification, defined by mitotic count ≥5/2 m... ...
