青春前期儿童甲状腺功能减退致垂体增生的MRI表现

MRI Manifestations of Children in Puberty with Pituitary Hyperplasia due to Hypothyroidism

目的探讨青春前期儿童甲状腺功能减退（甲减）致垂体增生的MRI表现。资料与方法分别对10例临床已确诊为甲减的儿童和10名青春前期的正常儿童行垂体MRI平扫及增强检查并对照分析。结果10例甲减患者表现为垂体上缘呈对称性隆起，形态呈钟形，垂体明显均匀强化，垂体高9．4～16．0nm，垂体柄横径为1．4～1．7mm。结论甲减所致垂体增生具有一定的影像学特征，结合临床可明确诊断。

Objective To discuss MRI manifestations of children in puberty with pituitary hyperplasia due to hypothyroidism. Materials and Methods MRI findings of 10 cases with pituitary hyperplasia by hypothyroidism and 10 cases adolescent children as control were compared and analyzed. Result MRI showed pituitary obvious homogeneous enhanced, upward symmetrically apophysis with shape like a bell, the height of pituitary gland was 9.4 - 16mm, the width of the stalk was 1.4 - 1.7 mm. Conclusion Pituitary hyperplasia with hypothyroidism has some MRI characteristics, diagnosis can be made combine with clinical manifestations.