肺腺癌於牙齦轉移非常罕見,傳統治療末期癌症通常預後都不佳,且病人無法獲得良好之生活品質。本病例在右下顎有一疼痛的牙齦腫塊,經病理切片顯示爲不良分化之腺癌。胸部X光檢查在右上肺葉有軟組織腫塊;血液檢查顯示腫瘤胚胎抗原爲顯著陽性反應;胸部斷層掃描,在右上肺葉有不規則之腫塊,並在縱膈膜上有淋巴結轉移;胸部病理切片顯示爲不良分化之腺癌;最終診斷爲肺腺癌於下顎牙齦轉移。在治療歷程,首先以電腦刀和口服化療藥物治療肺部病灶,臨床上在肺部有明顯改善。然而口腔病灶則持續生長且在頸部有淋巴轉移,因此在口腔病灶處採用局部切除,口腔和頸部的腫瘤控制則以影像導引放射線治療,並投予口服標靶藥物以治療肺腺癌。治療過程歷經一年且成果良好,目前仍持續追蹤治療。本病例提供轉移性腫瘤臨床診斷,標靶治療及電腦刀治療之相關治療經驗,突破傳統對肺腺癌於牙齦轉移之治療,以追求良好臨床反應和生活品質之整體效益爲目標,而達到改善癌症末期病人之生活品質,可供臨床醫師做爲參考。
Gingival metastasis of adenocarcinoma from the lung is quite uncommon. Patients with terminal stage cancer usually have poor prognosis and unsatisfactory quality of life under traditionally conservative treatment. Herein we reported a case of a mass at lower right gingiva with the final diagnosis of metastatic adenocarcinoma derived from the primary site of lung. The response of lung adenocarcinoma to Cyberknife and oral chemotherapy was good. Debulking of oral tumor under image guide radiotherapy were performed for local control of progressive oral cancer. Oral target chemotherapy was concurrently performed for lung adenocarcinoma and the overall outcome is satisfactory. The diagnosis, treatment options, and quality of life for this terminal stage cancer will be discussed in this article.