略語大辞典 [Med] 16 UPT unknown primary tumors 原発不明腫瘍. 転移腫瘍で原発腫瘍病巣が不明のもの.unknown primary tumors; ultimate metastatic tumor; no evidence for a primary tumor is found during the patient's lifetime; should have features of advanced malignant disease; a cancer; [Med]. 丸善「略語大辞典」JLogosID : 11853282