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  脑垂体肿瘤分为分泌型和非分泌型;微腺瘤(<1cm)或大腺瘤(>1cm)。腺体生长压迫视神经交叉,可引起特征性的视野缺失或颅神经压迫或脑积水;可影响其他垂体激素的产生而引起激素缺乏。、
血清催乳素
40-85ng/ml:多见于颅咽管瘤、甲状腺功能减退、药物影响。
50ng/ml:25%概率是垂体肿瘤
100ng/ml:50%概率是垂体肿瘤
>150ng/ml:通常为催乳素瘤,增高程度和肿瘤大小有关
150-200ng/ml:和大腺瘤有关,尤其是蝶鞍外延伸,最可能的原因是垂体柄的压迫而非催乳素瘤
200-300ng/ml:几乎100%是垂体肿瘤,且粗腺瘤的可能性大于微腺瘤。
CT或MRI可见,但有≦20%的微腺瘤者,CT或MRI正常。
内分泌疾病

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« This particular version was published on 30-Jan-2013 15:08 by 1614216108.