白垩纪至第三纪，随上覆地层增厚，断层封闭性增强。
From the Cretaceous to Tertiary, fault sealing built up with thickening of the overlying strata.
结果：肿瘤呈局部软组织增厚或团块状肿块，形态不规则，密度较均匀，增强后轻度强化；
Results:The tumors showed as a thickness or bulky mass of the local supraglottic structure with irregular margin, homogeneous attenuation and slight enhancement.
绝大多数患者有胆管回声改变，表现为胆管壁增厚、毛糙，回声增强，治疗后恢复较慢。
The wall of hepatic bile duct became thicker and shaggy in most patients. These changes improved quite slowly after treatment.
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