顎骨內黏液表皮樣瘤為罕見之唾液腺腫瘤。本病例為發生於四十五歲女性之顎骨內黏液表皮樣瘤。病人就診時主訴在下顎骨右後方之舌側部位有腫起與疼痛的現象。經放射線檢查發現，右下第三大臼齒舌側骨板有被破壞的現象。切片之組織病理學檢查可見多處顎骨之骨髓組織被腫瘤細胞侵犯。腫瘤細胞依形態可分為兩類：一類為泡沫細胞，另一類則為類鱗狀細胞。利用免疫組織化學染色法發現，腫瘤細胞對 CK7 為陽性反應。此外，部份的腫瘤細胞對黏液染色也有陽性反應。最後診斷為黏液表皮樣瘤。病人在手術後二十二個月無復發的跡象。 ( J. Family Dent. 8(2): 43-48, 2013 )

Intraosseous mucoepidermoid carcinoma (MEC) is an uncommon salivary gland tumor. We reported a case of intraosseous MEC in a 45-year-old female presented with a right mandibular swelling with pain. Radiographic studies showed bone destruction of the lingual plate of tooth #48.Histopathological
examination showed the marrow tissues of bone were infiltrated with tumor nests. The tumor consisted of a mixture of cells with foamy cytoplasm and squamoid cells. Immunohistochemical stain demonstrated that the tumor cells were positively stained with CK7. The tumor cells also showed focal positive reaction with mucin stain. A MEC was diagnosed. There was no recurrence of the tumor 22 months after surgery. ( J.Family Dent. 8(2): 43-48, 2013 )