【摘要】 本文研究了100例正常垂体的冠状位CT表现,得出四个主要结论:(1)正常垂体高度随性别和年龄而变化。青春期女性垂体可高达9.5mm;(2)正常垂体上缘可为凸形,特别是青年女性;(3)青年人垂体上缘凸隆和高度增加可能与垂体处于增生状态有关;(4)正常垂体可表现为非均匀性强化形式,包括前叶层面窦祥低密度(22％)、中间部层面小囊样低密度(10％)和后叶卵圆形低密度(25％)。这些正常表现或变异不应混淆为微腺瘤。更多还原

【Abstract】 The appearence of pitritary gland on coronal CT in 100 normal individuals was studied. There were four major conclusions: (1) the height of normal gland appears to vary with sex and age, and can be as much as 9.5mm in female adolescents; (2) the upper margin of normal gland may be convex, especially in younger females; (3) both convex upper margin and higher height of normal gland in younger ages probaly correlate with pubertal hyperplasia of the gland; and (4) the enhancement of normal gland may have an inhomogeneous appearance with some predictable patterns, including sinusoid low—density in anterior lobe (22%), cystic low-density in pars intemedia (10%), and oval low-density in posterior lobe (25%). Care must be taken not to confuse these normal pictures or variants with microadenomas.更多还原