虽然转移性癌肿常侵犯脑和垂体,但引起视交叉综合征尚属罕见.本文报导由转移癌引起视交叉综合征3例,加上过去文献报道的2例共5例.本组女性2例,男性1例,年龄分别为44、73、56岁,临床症状3例均有视力减退、双颞侧偏盲和体重下降, Although metastatic cancer often invades the brain and pituitary, but causing the optic chiasm syndrome is still rare. This article reports from the metastatic cancer caused three cases of optic chiasm syndrome, plus two cases reported in the past a total of five cases. This group of women 2 In one case, there were 1 male, aged 44 years, 73 years and 56 years respectively. All the 3 clinical symptoms were visual loss, hemianopsia hemianopsia, and weight loss.