甲状腺组织细胞增生症X极罕见，国外文献仅有少量病例报道。我们曾遇到2例，现结合文献报告讨论如下。1资料病例1：女性，27岁。患者产后半年自觉颈部肿块，于1991年5对当地医院行双侧甲状腺次全切除术，病理诊断亚急性甲状腺炎。1994年8月因原手术区变硬、肿胀流液，行清创术? Thyroid histiocytosis X is extremely rare and only a few cases have been reported in foreign literature. We have encountered two cases, which are discussed together with the literature report as follows. 1 Information Case 1: Female, 27 years old. Six months after birth, the patient felt a neck mass, and he underwent bilateral subtotal thyroidectomy on 5 local hospitals in 1991 to diagnose subacute thyroiditis. In August 1994, due to the hardening and swelling of the original surgical area, debridement was performed.