异位垂体腺瘤是指发生在蝶鞍外的垂体腺瘤 ,多发生在鼻腔、蝶窦及鼻咽部等处〔1〕,临床常考虑为恶性肿瘤。最近遇到 1例蝶窦异位垂体腺瘤 ,现报道如下。1　材料与方法1.1　一般资料　患者男性 ,2 9岁 ,涕中带血 9个月伴间断性鼻阻于 2 0 0 0年 5月入院。鼻咽部检查 :双后鼻孔见 Ectopic pituitary adenoma refers to the occurrence of the pituitary adenoma outside the sella, occur in the nasal cavity, sphenoid sinus and nasopharynx, etc. 〔1〕, often considered clinically malignant. Recently encountered a case of sphenoid ectopic pituitary adenoma, are reported below. 1 Materials and Methods 1.1 General Information Patients Male, 29 years old, tears in the blood for 9 months with intermittent nasal resistance in 2000 admission. Nasopharyngeal examination: double after the nose see