患者為一68歲男性，十五年前曾因甲狀腺癌接受甲狀腺摘除手術，最近二個月來患者感到右邊髖關節疼痛，X光檢查發現有一右髖臼部位有一骨質溶解的病灶存在，患者接受了鎝-99mTc-MDP全身骨骼造影及鎝-99mTc-MIBI全身造影，兩種檢查皆發現在右髖臼部位有一放射性強度較高的病灶，由於患者有甲狀腺癌的病史，所以我們認為此病灶極有可能為甲狀腺癌之轉移病灶，患者接受髖關節置換術，病理報告認為是釉芽細胞瘤。由於釉芽細胞瘤在臨床上並不多見，發生此位置更是少見，特此報告此一罕見病例。

　　　　　Adamantinoma is a rare low-grade malignant lesion that shows both epithelial and messenchymal differentiation. The scintigraphic findings of 99mTc-MDP whole body bone scan add 99mTc-MIBI imaging are presented. In the bone scan, there is markedly increased radioactivity in the acetabulum of the right hip. In the MIBI study, there is increased radioactivity in the corresponding area. The scintigarphic findings and the clinical history usggested the possibility of thyroid carcinoma with bony metastases. The diagnosis of adamantinoma was revealed by histopathology.