title: Tracheal encroachment in papillary thyroid carcinoma: images obtained by various modalities.
authors.forename: Ming-Tsang
authors.initials: MT
authors.lastname: Lee
authors.forename: Chih-Yuan
authors.initials: CY
authors.lastname: Wang
mesh_terms: D002291:Carcinoma, Papillary / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D014132:Trachea / Q000000981:diagnostic imaging; D014134:Tracheal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000556:secondary; D014463:Ultrasonography