What caused an otherwise healthy 23-year-old man to suddenly develop a large painless mass on the left side of his neck? That's what Jianyong Zhang, MD, and Xin Zhu, MM, of Guizhou Provincial People's ...
A 12-year-old girl was brought to her pediatrician by her parents for reevaluation of a midline neck mass that, as far as the patient and her parents could recall, "had been present for a long time." ...
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