1 病例介绍王某,男,50岁。1990年7月17日以咽部异物感6个月,舌根部发现肿物5个月收入院。患者半年前感咽部异物感,吞咽及低头时加重,未诊治。5个月前在当地医院就诊,发现舌根部有一核桃大小的肿物,经抗炎治疗后,未见缩小,肿物无痛及出血。口腔颌面 1 Case introduction Wang, male, 50 years old. On July 17, 1990, with a foreign body sensation in the pharynx for 6 months, the tongue was found in the base of the tongue for 5 months. The patient felt foreign body sensation in the pharynx half a year ago. He swallowed and lowered his head and he was not diagnosed. At the local hospital five months ago, he discovered that there was a walnut-sized mass in the base of the tongue. After anti-inflammatory treatment, no shrinkage was observed and the mass was painless and bleeding. Oral and maxillofacial