Endocrine Abstracts

Introduction: The connection between the pharynx and thyroid is close, so in the situations of concomitance: thyroid nodules and pharynx infiltration is very difficult to establish the primary lesion. Extralaryngeal spread of laryngopharyngeal cancer to the thyroid gland can occur by three pathways: direct extension, lymphatic spread or hematogenous spread. Of these three mechanisms, direct extension is the main mechanism because of the close anatomical relationship of the thy...