圆锥角膜是一种先天性发育异常，是一种以角膜扩张为特征，致角膜中央部向前凸出、变薄呈圆锥并产生高度不规则散光的角膜病变。
Keratoconus is an uncommon autosomal recessive inheritance, characteristic of corneal ectasia, which results in the corneal central anterior bulging, conus formation and high irregular astigmatism.
低地的树枝为了各自的需要朝四处伸展开去，形成各种各样不规则的形态向外扩张。
It may be well also for lowland branches to reach hither and thither for what they need, and to take all kinds of irregular shape and extension.
MRCP示胆总管胰腺段狭窄及其以上胆管扩张，胰管不规则狭窄。3例经激素治疗有效。
MRCP depicted irregular stenosis of pancreatic duct and dilation of hepatic duct above pancreas level.
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